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 Loop antenna fixtures and methods patent thumbnailLoop antenna fixtures and methods
Various loop antenna fixture embodiments are disclosed. The fixture can be configured to removably attach with other fixtures, thus changing the overall dimensions of an antenna wrapped around the periphery of the fixture or fixtures.
Gatekeeper Systems, Inc.


 Antenna device and electronic apparatus patent thumbnailAntenna device and electronic apparatus
An antenna device and an electronic apparatus are provided that enable a smaller casing and more stable communication by effectively using a magnetic shielding effect of a metal plate, regardless of internal structure or relationship of other components in a mobile apparatus. Included therein is an antenna coil (12) bisected into one side section and another side section of a loop antenna (11) along an edge of a magnetic sheet (110) attached to an inner wall surface of a metal body (111) disposed at a distant position relative to an antenna (121) of an opposing external device.
Dexerials Corporation


 Non-contact power reception  non-contact charging and electronic settlement performed in a single portable terminal patent thumbnailNon-contact power reception non-contact charging and electronic settlement performed in a single portable terminal
A non-contact power reception apparatus is provided, in which a power reception coil for a charging system and a loop antenna for an electronic settlement system are mounted on a battery pack and a cover case of a portable terminal such that the power reception coil is arranged in the center thereof and the loop antenna is disposed outside the power reception coil, so that a mode of receiving a wireless power signal and a mode of transmitting and receiving data are selectively performed, thereby preventing interference from harmonic components and enabling non-contact charging and electronic settlement using a single portable terminal. A jig for fabricating a core to be mounted to the non-contact power reception apparatus is provided..
Hanrim Postech Co., Ltd.


 Portable device and near field communication chip patent thumbnailPortable device and near field communication chip
In one embodiment, the antenna arrangement includes a primary antenna having a conductive sidewall; and a loop antenna disposed in and physically separated from the primary antenna. The loop antenna includes a first conductive loop and a capacitor electrically connected between ends of the first conductive loop..

 Proximity sensor patent thumbnailProximity sensor
A first oscillation circuit in which a helical antenna is used as a part of an element for a resonance circuit and a second oscillation circuit in which a loop antenna is used as a part of an element for a resonance circuit are caused to oscillate at substantially the same frequency. When a human body approaches the helical antenna and the loop antenna, the frequency difference between the first oscillation circuit and the second oscillation circuit increases.
Kyushu Institute Of Technology


 Reader for an electronic uhf access control system patent thumbnailReader for an electronic uhf access control system
Reader for an electronic uhf access control system, wherein the reader in operation cooperates with corresponding uhf tags and is provided with a housing, in which an antenna system for creating an electromagnetic interrogation field is arranged, wherein the antenna system comprises a first antenna for generating an interrogation field with a first polarization direction, and a second antenna for generating an interrogation field with a second polarization direction, wherein the first and the second polarization directions are substantially orthogonal to each other, and wherein the first antenna is a loop antenna with an open central area, and the second antenna is an antenna of the inverted f type (ifa), which is placed in the open central area of the loop antenna.. .
N.v. Nederlandsche Apparatenfabriek "nedap"


 Electronic device with near-field antenna operating through display patent thumbnailElectronic device with near-field antenna operating through display
An electronic device may have a display. A display cover layer and a transparent inner display member may overlap a display pixel layer.
Apple Inc.


 Closely coupled re-radiator compound loop antenna structure patent thumbnailClosely coupled re-radiator compound loop antenna structure
Source radio frequency energy (rf) is coupled wirelessly (no physical contact) between two compound loop (cpl) antennas or one cpl and another type of antenna across a variety of barriers such as plastic, human tissues, glass, and air. The compound coupling interface created between the two antennas is highly efficient in transferring the rf energy from a source antenna to a destination including a cpl antenna.
Dockon Ag


 Antenna device and electronic apparatus patent thumbnailAntenna device and electronic apparatus
The balance between communicable regions in the x-direction and the y-direction with respect to an antenna on the side of a reader/writer that is facing in the xy-plane is improved, allowing reliable communication via an electromagnetic field signal transmitted from the reader/writer. An antenna device incorporated into an electronic apparatus and configured to communicate with an external device via an electromagnetic field signal includes an antenna coil (11a) having formed therein a loop antenna (21a) disposed on a peripheral portion of a casing surface of the electronic apparatus and having an external shape formed by bending a long side of a rectangular shape into which a coil that inductively couples to the external device is wound, thereby improving the balance between communicable regions in the x-direction and the y-direction with respect to an antenna (121) on the side of a reader/writer that is facing in the xy-plane..
Dexerials Corporation


 Traveling-wave loop antenna based on metal ring cavity for generating radio frequency orbital angular momentum patent thumbnailTraveling-wave loop antenna based on metal ring cavity for generating radio frequency orbital angular momentum
A traveling-wave loop antenna based on a metal ring cavity for generating a radio frequency oam beam includes a main structure which is the metal ring cavity whose top surface has an annular slot circumferentially opened. Two openings ¼ of a perimeter of the metal ring cavity apart, are two excitation source ports of the antenna, for connecting a metal waveguide.
Zhejiang University


Electronic device with shared antenna structures and balun


An electronic device may be provided with shared antenna structures that can be used to form both a near-field-communications antenna such as a loop antenna and a non-near-field communications antenna such as an inverted-f antenna. The antenna structures may include conductive structures such as metal traces on printed circuits or other dielectric substrates, internal metal housing structures, or other conductive electronic device housing structures.
Apple Inc.


System and groundwater detection and evaluation


A system for mapping a depth of an aquifer and determining the presence and salinity of water from the aquifer and methods for using the making/using the same includes a central processor. One or more horizontal loop transmitters can be coupled to the central processor, wherein said one or more horizontal loop transmitters produce a first half-sine pulse of magnetic field at a first pulse duration for measuring the resistivity of a ground surface.
The Regents Of The University Of California


Hybrid-type nfc antenna and the electronic device thereof


A hybrid-type near field communication (nfc) antenna utilized in an electronic device is provided. The hybrid-type nfc antenna includes two differential connection ports and a loop antenna device.

Low-profile loop antenna


A low-profile loop antenna includes a driven element disposed very close, in some cases within about 0.005 wavelengths (λ) or closer, to a ground plane, while maintaining sizable gain and usable feed point impedance. Width of the driven element varies along its circumference, such that two diametrically opposed portions of the driven element are wider, and therefore have lower impedance, than other diametrically opposed portions of the driven element.

Mobile device


A mobile device includes a first communication device that transmits a first transmission signal to a vehicle side, a second communication device that transmits a second transmission signal in response to an electromagnetic field received from the vehicle side, a control unit that controls the first communication device and second communication device, and a circuit board. The first communication device includes a loop antenna that is formed by a conductive wire formed on the circuit board.

Tablet capable of sensing location using electromagnetic induction and electrostatic capacitance


The present invention relates to a tablet capable of sensing a location using electromagnetic induction and electrostatic capacitance. The tablet comprises: a loop antenna, having a closed-loop shape for surrounding a sensing area, capable of sensing an electromagnetic wave emitted from an electronic pen; a first line antenna provided with a plurality of first conductive patterns, both ends of each of the plurality of first conductive patterns being located on one side of the first line antenna; a second line antenna provided with a plurality of second conductive patterns which cross the plurality of first conductive patterns in the sensing area, both ends of each of the plurality of second conductive patterns being located on the side on which the both ends of each of the plurality of first conductive patterns are located; and a control circuit for sensing a location using electromagnetic induction and electrostatic capacitance by controlling a connection relation between the plurality of first conductive patterns and the plurality of second conductive patterns.

Rfid system with an eddy current trap


An rfid antenna assembly configured to be energized with a carrier signal is disclosed. The rfid antenna assembly includes an inductive component including a loop antenna assembly, at least one capacitive component coupled to the inductive component, and an eddy current trap positioned a predetermined distance from the loop antenna assembly..
Deka Products Limited Partnership


Near field communication chip embedded in a wearable electronic device and wearable electronic device


A wearable electronic device according to example embodiments includes a display panel configured to display an image, a main board including a processor configured to control an operation of the wearable electronic device, a metal frame defining a perimeter of the wearable electronic device, the metal frame including a metal material, the metal frame having first and second terminals, the first terminal being adjacent to the second terminal with a slit therebetween, a loop antenna between the display panel and the main board, the loop antenna configured to connect to the first and second terminals of the metal frame, and a near field communication (nfc) chip configured to connect to the metal frame and the loop antenna, the nfc chip configured to perform a near field communication by transmitting or receiving an nfc signal using the metal frame and the loop antenna.. .

Rfid tag and rfid system


An rfid tag includes a base part, a loop antenna around the base part including a first antenna element and a second antenna element, and a loop-length shorter than a wavelength of a resonant frequency, and an ic chip at a first surface side of the base part. The ic chip is connected between a first terminal disposed on a first end of the first antenna element and a second terminal disposed on a first end of the second antenna element.
Fujitsu Limited


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Hybrid antenna, antenna arrangement and manufacturing an antenna arrangement


According to one embodiment, a hybrid antenna is described comprising a plurality of windings wherein each winding comprises a loop antenna portion arranged in a plane and a ferrite antenna portion arranged at least partially outside of the plane.. .

Loop antenna with a magnetically coupled element


A loop antenna with a magnetically coupled element is described. In an embodiment, the loop antenna comprises a loop element that has a feed contact and a ground contact.

Loop antenna with a parasitic element inside


A loop antenna with a parasitic element inside is described. In an embodiment, the loop antenna comprises a loop element that has a feed contact and a ground contact.

Multiple input loop antenna


A multiple input loop antenna comprising one or more half-loop antennas disposed above a ground plane wherein the plane of each half loop is perpendicular to the ground plane such that the multiple input loop antenna is a three-dimensional structure and electromagnetic waves are radiated from points within the volume occupied by the antenna rather than from a two-dimensional surface. For this reason, the multiple input loop antenna can radiate levels of peak power without inducing excessive air breakdown which are relatively high compared with peak power levels of conventional antennas having comparable transverse dimensions.

Vehicle loop antenna


A vehicle loop antenna is provided and includes a watertight plate attached to a loop panel and having a plurality of watertight ribs formed on an upper surface thereof. The plurality of watertight ribs particularly limit the introduction of a liquid.

Frequency characteristic adjusting jig, antenna testing apparatus and antenna testing method, and loop antenna


A frequency characteristic adjusting jig attached to a loop antenna includes: a conductive first member which is located along an outer periphery of a loop for a portion of a conductor forming the loop antenna, and which is electromagnetically coupled or electrically connected to the portion of the conductor; a conductive second member which is located along the outer periphery of the loop for another portion of the conductor, and which is electromagnetically coupled or electrically connected to the other portion of the conductor; and a conductive third member which connects the first and second members together via a different path than a path formed along the loop. The first and second members are chosen to have a length along the loop such that a frequency characteristic of the loop antenna is shifted according to the length..
Fujitsu Limited


Dual eas-rfid security tag


A dual eas-rfid tag. In one embodiment, the invention can be a tag comprising a substrate having a first surface and a second surface opposite the first surface; an electronic article surveillance (eas) element comprising an eas antenna, the eas antenna on the first surface of the substrate; and a radio frequency identification (rfid) element, the rfid element comprising: a far field antenna on the second surface of the substrate, the far field antenna comprising a first pole portion, a second pole portion, and a connecting portion connecting the first pole portion and the second pole portion; a near field loop antenna on the second surface of the substrate, and an integrated circuit operably coupled to the near field loop antenna; wherein the far field antenna, the near field loop antenna, and the eas element are located on the substrate so as to be physically isolated from one another..
Checkpoint Systems, Inc.


Co-located locationing techniologies


A method and apparatus for a co-located radio frequency identification (rfid) device and ultrasonic device includes an rfid reader loop antenna element oriented parallel to a reflector panel. An ultrasonic emitter is disposed through an aperture in the reflector panel with a horn that extends through the loop element.
Symbol Technologies, Inc.


Multi-band loop antenna and electronic device utilizing the same


A multi-band loop antenna is provided. The antenna includes a loop radiator that operates in a low frequency band, and at least two loop radiators that operate in a high frequency band and are inserted into an inner area of the low frequency band loop radiator.
Samsung Electronics Co., Ltd.


Alford loop antennas with parasitic elements


According to one embodiment of the invention, a network device comprises a plurality of antennas comprising a first antenna, wherein the first antenna comprises: a first set of one or more elements that form an alford loop and that is configured for electrical excitation via a current transmitted over a conductive medium from a signal source and a second set of one or more elements that is configured for electromagnetic induction without contact with the conductive medium from the signal source.. .
Aruba Networks, Inc.


Electronic device for communication


To achieve a reduction of noise in a wireless system of an electronic device for communication. The electronic device for communication includes: a bottom lid; a loop antenna that forms an electromagnetic field; a communication circuit coupled to the loop antenna; a battery pack that is a metallic part; a magnetic sheet arranged between the loop antenna and the metallic part, the magnetic sheet including a protruding portion that protrudes outside an outer peripheral portion of the loop antenna; a wiring substrate arranged over the battery pack and having an ic and the like mounted thereon; and a lid with a display arranged over the wiring substrate, in which, with the outer peripheral portion of the loop antenna as a base point, a protruding amount from the base point of the protruding portion of the magnetic sheet is twice or more a wiring width of the loop antenna..
Renesas Electronics Corporation


Method for simplified closed-loop antenna tuning


A method of closed-loop antenna tuning (clat) search strategy based on maximum relative transducer gain (rtg) is proposed. A search region that account for tx input mismatch and forward voltage gain is pre-computed.
Mediatek Singapore Pte. Ltd.


Robust washable tags using a large area antenna conductor


Robust merchandise tags, patches, inlays and labels are provided for mounting on garments, fabrics, apparel accessories and other flexible merchandising materials. These are robust enough to withstand processing during manufacturing, including steps such as machine washing, stone washing and chemical treatments, while being capable of remaining on the garment, fabric or the like during inventory handling, merchandising and consumer use.
Avery Dennison Corporation


Integrated antenna, and manufacturing method thereof


An integrated antenna (1) includes: a first loop antenna (11) having a first annular antenna element (11a); and a second loop antenna (13) having a second annular antenna element (13). The second annular antenna element (13) is arranged, on a surface identical to that where the first annular antenna element (13a) is arranged, so as to surround the first annular antenna element (13a)..
Fujikura Ltd.


Self-grounded antenna arrangement


A self-grounded antenna arrangement includes a base or central portion in a first plane and a number of arm sections associated with the central portion that taper toward a respective end tip. Each arm section is adapted to form a transition from the central portion and being bent backward toward the central portion by more than 180 degrees so that its end tip approaches a first side of the central portion, at an opening in the central portion.
Gapwaves Ab


Near-field gradient probe for the suppression of radio interference


An antenna system is provided comprising first, second, and third loop antennas, each antenna having a respective loop area and spaced apart from the other antennas. The first and third antennas are configured and driven to form a first independent balanced feed point that is substantially isolated from the second antenna, which is configured to be driven from a second balanced feed point.
Raytheon Company


Electronic device with antenna having ring-type structure


Various exemplary embodiments of the present disclosure may provide an electronic device including an antenna with a ring-type structure. The electronic device includes a metal bracket and the antenna.
Samsung Electronics Co., Ltd.


Touch panel device, electronic apparatus and method


According to one embodiment, a capacitance type touch panel device which is provided on a screen of a display device and is allowed to detect a touch of a stylus is provided. The touch panel device includes a loop antenna, a sensor and a controller.
Kabushiki Kaisha Toshiba


Multiband antenna apparatus and methods


The present disclosure includes multiband antenna apparatus and methods. In one embodiment, an antenna includes a loop antenna having a first corner between a first side and a second side and a second corner between the second side and a third side, a loop fed inverted f antenna comprising the loop antenna and a first arm extending from the second corner of the loop antenna, the first arm configured in parallel with the first and second sides of the loop antenna and forming a corner proximate to the first corner of the loop antenna, and a monopole antenna coupled to the first side of the loop antenna..
Qualcomm Incorporated


Wireless electronic device with magnetic shielding layer


An electronic device may have a housing, electrical components, and other electronic device structures. A display may be mounted in the housing.
Apple Inc.


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Ferrite green sheet, sintered ferrite sheet, ferrite composite sheet comprising the same, and conductive loop antenna module


Disclosed are a ferrite green sheet comprising a pattern formed in a top surface of the ferrite green sheet, a sintered ferrite sheet, a ferrite composite sheet comprising the same, and a conductive loop antenna module. The pattern comprises a plurality of grooves, each groove has a width w and a rounded shape bottom having a radius of curvature of r, wherein a ratio of w to r (w:r) is in the range of 1:0.1 to 1:0.5..
3m Innovative Properties Company


System, controlling buried devices


A system, method and apparatus for controlling buried devices by means of a very low frequency (vlf) modulated magnetic field capable of providing through-the-earth (tte) communications. The system comprises a plurality of vlf transmission loop antennas positioned to cover a desired coverage area and configured to transmit a magneto-inductive signal to a desired operating depth.
Vital Alert Communiation Inc.


Communication module


Various embodiments provide a communication module having a carrier, a loop antenna, a modulation circuit which is coupled to the loop antenna and is configured to modulate or demodulate signals which are received or transmitted using the loop antenna, and an impedance matching circuit for matching the impedance of the loop antenna to the input impedance of the modulation circuit. The modulation circuit and the impedance matching circuit are arranged inside the loop antenna on or in the carrier..
Infineon Technologies Ag


Power line proximity sensing and warning system


A wireless power line sensing device can include an external antenna port that permits connection of an external loop antenna to the wireless power line sensing device. The external loop antenna can be used in place of the integral loop antenna which can be disabled when the external loop antenna is connected.
United Safety, Inc.


Electronic device with near-field antenna operating through display


An electronic device may have a display. A display cover layer and a transparent inner display member may overlap a display pixel layer.
Apple Inc.


Loop antenna for mobile handset and other applications


There is disclosed an antenna system for mobile handsets and other devices. The antenna system comprises a dielectric substrate having first and second opposed surfaces, a conductive track on the substrate, and a separate, directly driven antenna to drive the parasitic loop antenna formed by the conductive track.
Microsoft Technology Licensing, Llc


Antennas for near-field and non-near-field communications


An electronic device may be provided with antenna structures. The antenna structures may be coupled to non-near-field communications circuitry such as cellular telephone transceiver circuitry or wireless local area network circuitry.
Apple Inc.


Multipath open loop antenna with wideband resonances for wan communications


The disclosure concerns an antenna with open loops and multipath current distribution to achieve ultra wideband characteristics and antenna miniaturization, while simultaneously keeping high performance for a more reliable wan communication, with higher data transfer, less dropping connections and improved sensitivity. To further reduce spatial requirements, the antenna may be incorporated on a flex substrate for bending with the contour of a device housing or the like..
Taoglas Group Holdings Limited


Two-part pulsed electromagnetic field applicator for application of therapeutic energy


Pulsed electromagnetic field (pemf) apparatuses and methods of making and using them. In particular, described herein are two-part pemf apparatuses that include a self-contained, lightweight, small, compact (e.g., in some variations, wearable) generator unit that is adapted to releasably and replaceably mate with an applicator unit.

Loop antenna having a parasitically coupled element


An antenna, a portable electronic device incorporating an antenna and a method of operation are provided to enable both wide and multiple frequency band response. The antenna may include a feeding arm and a parasitic element.

Antenna system using capacitively coupled compound loop antennas with antenna isolation provision


An antenna system is provided, including a first antenna, a second antenna, a ground plane, and a resonant isolator coupled to the first and second antennas. Each of the antennas is configured to be a capacitively-coupled compound loop antenna, and the resonant isolator is configured to provide isolation between the two antennas at resonance.

Antenna device and portable electronic device


An antenna device of the present invention includes, in one aspect: a patch antenna having a resonant frequency at a first frequency; and a loop antenna having a resonant frequency at a second frequency that is different from the first frequency. A loop length of the loop antenna is such that standing waves are generated in the loop antenna when the loop antenna receives radio waves of the first frequency, and the patch antenna is disposed so as to magnetically couple with the loop antenna..
Casio Computer Co., Ltd.


Communication system, information recording medium, and relay communication device


The disclosed communication system, information recording medium, and relay communication device allow communication via electromagnetic induction, allow the use of low-cost information recording media, improve communication stability when information recording media is misaligned or rotated, and provide high ic-chip tolerance to flexion in information recording media. An information recording medium (3-1) has: an ic chip (32-1) that is capable of communication via electromagnetic induction; and a pair of thin conductive sheets (21-1) connected to the ic chip (32-1).
Dai Nippon Printing Co., Ltd.


System and coupling proximity ic card/module to proximity coupling device in low mutual magnetic coupling conditions


A proximity integrated circuit card (picc) is disclosed comprising a main loop antenna to transmit data from said picc and a secondary loop antenna to receive rf transmission to said picc. The main antenna and the secondary antenna arranged to yield low mutual magnetic coupling so that the rf transmission to the picc yields bigger signal in the secondary antenna than the signal that yields in the secondary antenna from a transmission from the main antenna.
On Track Innovations Ltd.


Electronic device with shared antenna structures and balun


An electronic device may be provided with shared antenna structures that can be used to form both a near-field-communications antenna such as a loop antenna and a non-near-field communications antenna such as an inverted-f antenna. The antenna structures may include conductive structures such as metal traces on printed circuits or other dielectric substrates, internal metal housing structures, or other conductive electronic device housing structures.
Apple Inc.


Local sar behavior of mri transmission coils by use of orthogonal loop antennas


A local coil for a magnetic resonance imaging system includes at least one former antenna and at least one further antenna. The at least one former antenna is arranged orthogonally with respect to the at least one further antenna..

Multi-band plasma loop antenna


Disclosed is a multi-band plasma loop antenna that may reduce radio interference and provide multiple bands. First, the multi-band plasma loop antenna includes an antenna element including a plurality of plasma loop patterns; a plasma activation controller configured to activate a specific plasma loop pattern among the plurality of plasma loop patterns based on an input signal; and at least one rf feed configured to apply an rf signal to the antenna element.
Electronics & Telecommunications Research Institute


Antenna device and increasing loop antenna communication range


A device includes a first loop antenna and a second loop antenna. The first loop antenna includes at least three sides, wherein at least two of the sides form an acute interior angle.
Sony Corporation


Decoupled contactless bi-directional systems and methods


A contactless bi-directional device including first and second generally mutually electromagnetically decoupled contactless loop antennas which are arranged in at least partially mutually overlapping orientation, first and second contactless communication chips, each of the first and second communications chips being connected to a corresponding one of the generally mutually electromagnetically decoupled contactless loop antennas, thereby providing bi-directional communication.. .
On Track Innovations Ltd.


Co-located antennas and an electronic device including the same


Provided is an antenna system. The antenna system, in this aspect, includes a loop antenna element, the loop antenna element having a positive loop antenna terminal end and a negative loop antenna terminal end.
Nvidia Corporation


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Wideband loop antenna and an electronic device including the same


Provided is an antenna. In one aspect, the antenna includes a feed element having a first feed element end and a second feed element end, the first feed element end configured to electrically connect to a positive terminal of a transmission line.
Nvidia Corporation


Conductive loop antennas


A antenna for a wireless device is provided. The antenna may include a dielectric substrate, a counterpoise disposed on the dielectric substrate, a first conductive element electrically connected to the counterpoise, and a second conductive element electrically connected to a feed point.

Systems and methods for hearing assistance device antenna


Disclosed herein, among other things, are systems and methods for modular circuit component for a hearing assistance device flex antenna. One aspect of the present subject matter includes a universal apparatus for use with multiple hearing assistance devices.
Starkey Laboratories, Inc.


Broadband antenna


A broadband antenna for a wireless communication device includes a grounding unit for grounding; a first radiating element; a second radiating element electrically connected to the grounding unit; a signal feed-in element for transmitting a radio signal to the first radiating element in order to emit the radio signal via the first radiating element; and a passive component comprising an inductor, where the passive component is electrically connected between the first and the second radiating elements to work in conjunction with the first radiating element, the second radiating element and the grounding unit to form a loop antenna effect.. .
Wistron Neweb Corporation


Antenna structure and wireless communication device using the antenna structure


An antenna structure includes an antenna holder, a radiating body, a feed portion, and a grounding portion. The antenna holder includes a plurality of surfaces.
Chiun Mai Communication Systems, Inc.


Nerve stimulation device with a wearable loop antenna


A wearable medical device system having an external, necklace-shaped antenna that is sized and configured for placement about the neck of a subject, and having an implantable device with an implanted antenna that communicates with the external antenna to permit the transfer of energy and data between external and implantable components. The wearable medical device includes a control module that communicates with the implanted device via the external antenna.
Cyberonics, Inc.


Antenna device and electronic apparatus


A square bracket-shaped radiation element is in a non-ground region of a board. A first reactance element that equivalently enters a short-circuited state in a second frequency band is connected between a second end of the radiation element and a ground conductor.
Murata Manufacturing Co., Ltd.


Antenna structure and wireless communication device using the antenna structure


An antenna structure includes an antenna holder, a feed portion, a grounding portion, and a radiating body. The antenna holder includes a plurality of surfaces.
Chiun Mai Communication Systems, Inc.


Three-dimensional compound loop antenna


A three-dimensional compound loop antenna is provided, including a ground plane, a pair of horizontal conductive portions substantially horizontal relative to the ground plane, a feed line substantially vertical relative to the ground plane, and a vertical conductive portion coupling the pair of horizontal conductive portions to the ground plane.. .
Dockon Ag


Loop antenna


A loop antenna is provided, which includes a first loop section, a second loop section and a third loop section. The first loop section surrounds and defines an empty area.
Wistron Neweb Corp.


Loop antenna and switching the same


The loop antenna includes a loop coil connected to an rf signal source of a reader through a feed cable, and a switch that is turned on and off depending on a dc voltage that is proportional to the magnitude of an rf signal supplied from the rf signal source of the reader and opens the loop coil when turned off and closes the loop coil when turned on.. .
Electronics And Telecommunications Research Institute


Circular dipole and surface coil loop structures and methods for using the same


A circular dipole antenna (e.g., for a magnetic imaging system) according to exemplary embodiments of the present disclosure can comprise a circular conductor with a feed point on one side and a gap on the other. A surface coil loop antenna (e.g., for magnetic imaging system) is provided with a capacitor arrangement selected for non-uniform or unbalanced current distribution, with corresponding magnetic and electric dipole fields provided in a single structure referred to as a loopole..
New York University


First responder and mine emergency communication


An underground mine communications upgrade comprises an independent vhf-uhf band to mf band repeater-transceiver translator (rtt) and loop antenna added to a conventional miner's cap-lamp and helmet. Vhf/uhf band communications with nearby conventional handsets are translated to medium frequency (mf band) communications that couple mine-wide to copper-core life-lines in all the entries.
Stolar, Inc.


Antenna and communication device comprising same


Disclosed are an antenna and a communication device including the same. The antenna includes a feeder, a first loop antenna that has an end connected to the feeder and the other end connected to a ground, and a second loop antenna that has an end connected to the feeder and the other end connected to the ground, and has an electrical length different from that of the first loop antenna, wherein an impedance matching line having a discontinuously different line width is formed in a partial area of the first loop antenna..
Emw Co., Ltd.


Antenna device and electronic apparatus


A square bracket-shaped radiation element is in a non-ground region of a board. A first reactance element that equivalently enters a short-circuited state in a second frequency band is connected between a second end of the radiation element and a ground conductor.
Murata Manufacturing Co., Ltd.


Antenna structure and wireless communication device employing same


An antenna structure includes a feeding portion, a first grounding portion, a second grounding portion, a first loop antenna and a second loop antenna. The feeding portion has a first side and a second side parallel to the first side.
Chiun Mai Communication Systems, Inc.


Wearable electronic device


A wearable electronic device includes a body and a wearing element. The body includes a conductive frame.
Asustek Computer Inc.


Adjustable magnetic probe for efficient near field scanning


A method and apparatus for testing near field magnetic fields of electronic devices. The method comprises measuring a magnetic field using a loop antenna that is oriented in a first direction.
Qualcomm Incorporated


Antenna structure and wireless communication device employing same


An antenna structure includes a feeding portion, a grounding portion, a first radiating body, a second radiating body, a first coupling portion and a second coupling portion. The first radiating body is electronically coupled to the grounding portion and the feeding portion.
Chiun Mai Communication Systems, Inc.


Microwave sensor having function of range gates


A microwave sensor is disclosed. The microwave sensor includes an active antenna module, a first low pass filter, a second demodulator, a modulation module, and a discrimination control module.
U&u Engineering Inc


Position detection method, position detection apparatus, antenna apparatus, and display apparatus


Provided are a position detection method that selects one antenna at a time from a plurality of loop antennas, transmits, through the selected loop antenna, an electromagnetic signal to a pointer that indicates a screen unit, receives, from the pointer, a resonance signal corresponding to the electromagnetic signal transmitted through the selected loop antenna, and extracts polar coordinates including a distance value and an angle value of a point on a screen unit indicated by the pointer, based on a distribution of a signal strength of a resonance signal received through each of the plurality of loop antennas, a position detection apparatus, a display apparatus, and an antenna apparatus appropriate for extracting polar coordinates.. .
Lg Display Co., Ltd.


Multi-feed loop antenna


A multi-feed antenna in provided, including multiple feed elements associated with multiple frequency regions, respectively, and a folded loop element for radiating energy. Each of the multiple feed elements is capacitively coupled to the folded loop element..
Ethertronics, Inc.


Folded near field communication antenna


Provided is an antenna structure which is capable of having sufficient antenna performance even in an antenna having a small cross-sectional area. The antenna of the present invention comprises: a ferrite sheet; and an antenna sheet (flexible printed circuit board) which has a spiral loop antenna pattern.
Aq Corporation


Mobile terminal having antenna


A mobile terminal that can prevent radiation performance deterioration of an antenna is provided. The mobile terminal includes a circuit board in which an antenna and one or more key buttons are mounted, a housing mounted on the antenna and the circuit board, and a case for enclosing a periphery of the one or more key buttons and having a plurality of openings according to the quantity of the key buttons, wherein an antenna adjacent opening among the plurality of openings is extended through a slot toward an edge of the case to embody a loop antenna.
Samsung Electronics Co., Ltd.


Capacitively coupled loop antenna and an electronic device including the same


Provided is an antenna. The antenna, in one embodiment, includes a feed element electrically connectable to a positive terminal of a transmission line, and a ground element electrically connectable to a negative terminal of the transmission line.
Nvidia Corporation


Active antenna module


An active antenna module is disclosed. The active antenna module comprises a loop antenna, a rf transistor, a lr series circuit, a first bypass capacitor and a second bypass capacitor.
U&u Engineering Inc.


Tablet having a flexible and transparent sensing area


The present invention relates to a tablet having a flexible and transparent sensing area, comprising: an insulating transparent base material having a first loop antenna and a plurality of comb-shaped first line antennas; and a control substrate having, mounted thereon, a first multiplexer (mux) for selecting one of the ends of the plurality of first line antennas, an amplifier for outputting a potential difference between an output of the first multiplexer and the first loop antenna, and an mcu (micro controller unit) for generating a first selection signal and, on the basis of the potential difference from the amplifier, sensing the position of an electronic pen from one line antenna. The first loop antenna formed on the transparent base material is combined with a first conductive pattern formed on the control substrate, thereby forming a closed loop.
The Han Inc.


Diplexing and triplexing of loop antennas


An antenna system comprising a plurality of loop antenna sets with each of the plurality of loop antenna sets disposed in one of a plurality of different parallel planes with each of the planes being spaced apart from another adjacent plane and wherein loop antenna set in the plurality of loop antenna sets comprises a plurality of loop antennas and wherein the plurality of loop antennas are configured such that the near field inductive coupling between the plurality of loop antenna sets is zero. The absence of inductive coupling between the loop elements provides a frequency-independent means for multiplexing signals for transmission and reception by the multiple loop antenna system..
Raytheon Company


Multi-band antenna


Methods and systems for extending a bandwidth of a multi-band antenna of a user device are described. A multi-band antenna includes a single radio frequency (rf) input coupled to a first loop antenna, the first loop antenna configured to provide a first resonant mode.
Amazon Technologies, Inc.


High frequency magnetic field antenna


An antenna system including a loop antenna including a conductor; and a magnetic gain element positioned in an aperture defined by the loop antenna, the magnetic gain element including a magnetic material that has a relative permeability greater than one for an operating frequency range, the magnetic gain element configured to increase a magnetic flux density associated with a received magnetic-field component of an incident electromagnetic wave wherein a loop output voltage induced in the loop antenna is based, at least in part, on the increased magnetic flux density.. .
University Of New Hampshire


Headset loop antenna for audio devices


The present invention relates to a headset device, an audio device and methods of receiving a radio signal via the headset device, wherein the headset device comprises at least one first conductor for supplying an audio signal to a respective earpiece, a second conductor arranged in a loop configuration for providing a magnetic antenna, and a connector (50) having at least one respective first connecting portion (3, 4) for providing a connection to the at least one first conductor (140), a second connecting portion (1) for providing a connection to a first end of the second conductor (70), and a third connecting portion (2) for providing a connection to a second end of the second conductor (70), wherein an output of the magnetic antenna is provided between the second and third connecting portions (1, 2). At the audio device, an impedance transformer (10) is coupled to the second and third connecting portions at its primary side and to an amplifier (20) at its secondary side..
Nxp B.v.


Electromagnetic open loop antenna with self-coupling element


An antenna is provided for the new combined gps and glonass technologies in single port for tracking and navigation applications in wireless devices. The resonant mechanism is excited by an open loop structure at 1.575 ghz and 1.610 ghz, forcing the current distribution to remain at that particular portion of the antenna resulting as the primary resonator..
Taoglas Group Holdings Limited


Method for determining incline angle of electromagnetic pointer


A method for determining an incline angle of an electromagnetic pointer is provided. The electromagnetic pointer is positioned on or above a digitizer which has a plurality of loop antennas.
Waltop International Corp.


Practical electromagnetic gradiometer


An electromagnetic gradiometer (emg) survey kit includes a lightweight man-carry boom about ten feet long. Matched magnetic dipole antennas are attached at each end and connected to a differential emg receiver able to make measurements in the picotelsa range.
Stolar Research Corporation


Multiple polarization loop antenna and associated methods


The multiple polarization loop antenna includes a circularly polarized loop antenna, which may utilize a loop electrical conductor and two signal feedpoints along the loop electrical conductor separated by one quarter of the length of the loop circumference for a signal feedpoint phase angle input difference of 90 degrees. Each of the signal feedpoints may include a loop discontinuity, so that at least one signal source coupled thereto provides circular polarization from the loop electrical conductor.

Decoupled contactless bi-directional systems and methods


A contactless bi-directional device including first and second generally mutually electromagnetically decoupled contactless loop antennas which are arranged in at least partially mutually overlapping orientation, first and second contactless communication chips, each of the first and second communications chips being connected to a corresponding one of the generally mutually electromagnetically decoupled contactless loop antennas, thereby providing bi-directional communication.. .

Loop antenna


A loop antenna in accordance with the present invention has an antenna element having a shape that traces a closed curve, the antenna element including (i) a first projection section which projects from one of two end sections of the antenna element toward an inside of the closed curve and (ii) a second projection section which projects from the other of the two end sections of the antenna element toward the inside of the closed curve, each of the first projection section and the second projection section including a feed point.. .

Rfid tag and automatic recognition system


An rfid tag having a resin substrate, an ic chip positioned in the center section on the substrate, a single-layer antenna for forming an electric closed circuit by connecting with the ic chip and positioned in the peripheral section of the ic chip, and a sealing material for sealing the ic chip and the antenna, wherein the antenna is a coil antenna or a loop antenna, the resonant frequency (f0) of the antenna is the operating frequency of the ic chip or thereabouts, the operating frequency of the ic chip is 13.56 mhz-2.45 ghz, or 0.86-0.96 ghz, and the size of the rfid tag is 13 mm or less in length, 13 mm or less in width, and 1.0 mm or less in height; and an automatic recognition system using the same.. .

Antenna with tunable high band parasitic element


Electronic devices may be provided that include radio-frequency transceiver circuitry and antennas. An antenna may be formed from an antenna resonating element and an antenna ground.

Rfid tag, producing rfid tag, and die


An rfid tag is provided which does not give a user a feeling of strangeness even when contacting his/her body and is firmly attachable to a fabric such as clothes. The rfid tag is for wireless communications and includes a main antenna 30 formed by a conductive fiber, a loop antenna 12 electrically coupled to the main antenna 30 without direct conductive connection, a semiconductor device 20 electrically connected to a terminal 16 of the loop antenna 12, and a resin 28 collectively sealing the main antenna 30, the loop antenna 12, and the semiconductor device 20..



Loop Antenna topics:
  • Loop Antenna
  • Communications
  • Antenna Loop
  • Power Harvesting
  • Circuit Board
  • Dipole Antenna
  • Communication System
  • Transceiver
  • Planar Antenna
  • Planar Antennas
  • Signal Processing
  • Magnetic Resonance Imaging
  • Imaging System
  • Interventional
  • Disconnect


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