|| List of recent Loop Antenna-related patents
|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..
|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.
|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.
|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..
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..
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.. .
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..
Small loop antenna with shorting conductors for hearing assistance devices
Disclosed herein, among other things, are methods and apparatus for mitigating antenna interference for hearing assistance devices. One aspect of the present subject matter includes a hearing aid for a wearer including hearing aid electronics and an antenna including a loop segment.
Touch type organic light emitting diode display device
An organic light emitting diode display device includes a display portion including a substrate, and an organic light emitting diode on the substrate; and an electromagnetic induction sensor portion attached to a bottom of the display portion, wherein the electromagnetic induction sensor portion includes: a back plate; a protection layer covering a bottom of the back plate; and a loop antenna pattern on at least one of top and bottom surfaces of the back plate.. .
Vlf transmit antenna system, method and apparatus
There is provided a very low frequency (vlf) transmit antenna system, method, and apparatus for creating a magnetic field at low frequencies suitable for communications through the earth or other thick, solid barriers. At least two loop antennas are arranged such that a magnetic field of each one of the at least two loop antennas passes through each remaining one of the at least two loop antennas, thereby closely coupling the at least two loop antennas.
Antenna arrangement, communication appliance and antenna structure
In various embodiments, an antenna arrangement is provided. The antenna arrangement may include at least one integrated circuit; at least one loop antenna that is coupled to the integrated circuit and that forms a loop antenna region; at least one antenna that is coupled to the integrated circuit and that has a magnet core; wherein at least one portion of the magnet core is arranged above a portion of the loop antenna region; wherein the portion of the magnet core overlaps the portion of the loop antenna region; or wherein the portion of the magnet core does not overlap the portion of the loop antenna region..
Antenna system with return path tuning and loop element
Electronic devices may include radio-frequency transceiver circuitry and antenna structures. The antenna structures may include a dual arm inverted-f antenna resonating element and an antenna ground.
Antenna and mobile terminal
An antenna and a mobile terminal are disclosed that relate to the communications field. The antenna includes a ground cable and a feeder, where the feeder includes a low-frequency branch and a high-frequency branch; the low-frequency branch and the high-frequency branch have a common endpoint; the low-frequency branch is surrounded by the ground cable to form a coupled loading mode and an equivalent coupled feed loop antenna radiation mode; and the high-frequency branch is set outside the ground cable to complete a high-frequency monopole radiation mode.
Chassis-excited antenna apparatus and methods
A chassis-excited antenna apparatus, and methods of tuning and utilizing the same. In one embodiment, a distributed loop antenna configuration is used within a handheld mobile device (e.g., cellular telephone).
Card-type information recording medium having embedded antenna for near field communication and manufacturing method thereof
A card-type information recording medium including a pcb that has a loop antenna pattern and a routing pattern formed on the top surface and the bottom surface thereof through the use of an etching process, an nfc communication unit and a usim card unit that are horizontally mounted on the top of the pcb, and a molding material that is formed on the top of the pcb so as to cover the nfc communication unit and the usim card unit.. .
Conveyor belt with antenna
A modular conveyor belt having electronics modules with antennas at the hinge joints between rows of modules or extending laterally across the width of the belt. The antennas may be linear antennas received in hinge-rod passageways or embedded in intermediate transverse ribs in belt modules or may be loop antennas formed in the hinge elements of electronics modules..
Multiband antenna and mobile terminal
The antenna has a configuration in which three inductors, i.e., first to third inductors 5 to 7 having values of inductances l1 to l3, respectively, are arranged in an inverted f-shaped antenna formed of miniaturized four antenna elements, i.e., first to fourth antenna elements 1 to 4 with an element length shorter than that of each wavelength of desired resonance frequencies are grounded at a gnd ground point 11. A power feeding unit 10 feeds electric power to the inverted f-shaped antenna through a matching circuit 9, thereby enabling a plurality of antenna operations of a two-resonance loop antenna that resonates at two resonance frequencies on a high-frequency side, an inverted f-shaped antenna that resonates at two resonance frequencies on a low-frequency side, and an inverted l-shaped antenna..
Antenna assemblies with tapered loop antenna elements
According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes one or more tapered loop antenna elements..
Mechanically resistant loop antenna for a passport
The invention relates to an antenna for a radio frequency transponder comprising a flat base with a longitudinal edge, an antenna for receiving via electromagnetic coupling on the base, said edge being intended to be parallel to a binding of the booklet, said antenna comprising parallel and perpendicular coils that extend respectively parallel and perpendicular to the longitudinal edge; the transponder is characterized in that said parallel coils have close-together inter-coil spacing at least in an area of binding of the booklet with respect to the inter-coil spacing of the perpendicular coils. The invention also relates to a portable electronic object including said transponder..
Mobile wireless communications device including parallel nfc loop antennas and associated methods
A mobile wireless communications device includes a portable housing, an nfc transceiver carried by the portable housing, and an antenna assembly coupled to the nfc transceiver and comprising a plurality of loop antennas connected in parallel, and progressively increasing in size from an innermost loop antenna to an outermost loop antenna.. .
Multi-loop antenna system for contactless applications
An antenna system suitable for use with contactless transaction devices, the antenna system including a reader, a primary loop antenna having a first end and a second end, each one of the first and second ends being coupled to the reader and at least one secondary loop antenna galvanically connected to the primary loop antenna at a single connection point and positioned with respect to the primary loop antenna so as to make capacitive coupling therebetween negligible.. .
Hybrid radio frequency / inductive loop antenna
Biometric monitoring devices, including various technologies that may be implemented in such devices, are discussed herein. Additionally, techniques, systems, and apparatuses are discussed herein for providing a hybrid antenna including an rf radiator and an electrically coupled inductive loop.
Closely spaced antennas isolated through different modes
Multi-antenna systems, including mobile devices having multiple antennas, are provided herein. A first antenna and a second antenna are operable at two or more of the same non-overlapping communication frequency bands.
Electromagnetic vector sensors (emvs) apparatus method and system
An electromagnetic vector sensor (emvs) system, having a plurality of emvs devices consisting of a plurality of loop antenna elements spatiatally orthogonally integrated with and electrically isolated from a plurality of dipole antenna elements, mounted on a rotatably adjustable platform having a true north orientation, including active circuitry residing in antenna housings, and external executing software programs causing the active circuitry in cooperation with the emvs device and receivers to determine angle of arrival and resolution of incoming wave vectors and polarization of incoming signals and to perform accurate high frequency geolocation signal processing; the programs which perform calibration and antenna element placement determination operations, also cause the system to collect data of known transmitted high frequency skywave signals, and estimate direction of arrival of unknown signals by detecting, resolving and measuring components of an electric field and a magnetic field at a single point.. .
Electronic pet gate
An electronic pet gate. The electronic pet gate includes a gate transmitter generating a barrier field and a gate receiver generating a deterrent stimulus in the presence of the barrier field.
Adjustable tuning of a dielectrically loaded loop antenna
A microwave antenna assembly is disclosed. The antenna assembly includes an elongated member defining a longitudinal axis and having proximal and distal ends.
Monolithically integrated implantable flexible antenna for electrocorticography and related biotelemetry devices
A sub-skin-depth (nanoscale metallization) thin film antenna is shown that is monolithically integrated with an array of neural recording electrodes on a flexible polymer substrate. The structure is intended for long-term biometric data and power transfer such as electrocorticographic neural recording in a wireless brain-machine interface system.
Nfc antenna using dual resonance technical field
The present invention is disclosed to provide an nfc antenna using dual resonance, wherein a closed circuit is formed by a capacitor and a loop antenna, and a relay unit is attached to a portable wireless terminal that forms a resonance to a predetermined frequency signal mutually transmitted between a portable wireless terminal reader and an nfc chip, and in the course of communicating between the nfc chip and the reader, the relay unit relays a signal transmitted by the reader to an nfc antenna unit, and the nfc chip relays a signal transmitted through the nfc antenna unit to the reader to thereby increase a recognition distance capable of obtaining predetermined information.. .
Dynamic multifocal contact lens dual layer with core
An dynamic multiple focus contact lens has two transparent layers, each with a first annular electromagnet and a second annular electromagnet, a transparent pupil allowing passage of light through the layers, a core between the two layers, at least one loop antenna in communication with the electromagnets, and a transmitter for activating the electromagnets. The layers have a first shape similar to a circular segment that follows the surface of the cornea.
An object detector comprising: a transmitter arranged to generate a transmit signal; a transmit loop antenna, coupled to said transmitter and arranged to radiate said transmit signal; and a receive loop antenna arranged to generate a receive signal from received radio waves; wherein said received radio waves include said radiated transmit signal and, in the presence of objects within range of the device which reradiate said transmit signal, one or more radio waves reradiated by such objects; said receive signal includes a component corresponding to said transmit signal and, in the presence of reradiated radio waves, one or more components corresponding to said reradiated radio waves; and said object detector further comprises a signal detector, coupled to said receive loop antenna and said transmitter, the signal detector arranged to detect changes in the amplitude and/or phase of said receive signal which are due to changes in said components corresponding to said reradiated radio waves.. .
Sensor assembly, method, and device for monitoring shear force and pressure on a structure
Shear force and pressure on a structure are simultaneously monitored using signals received from antennas on the structure. The shear force on the structure is monitored using a signal received from a patch antenna on the structure, and the pressure on the structure is monitored using a signal received from a loop antenna on the structure..
Indium tin oxide loop antenna for near field communication
An apparatus includes a display and a transceiver. The display has a lateral surface.
Chassis-excited antenna apparatus and methods
A chassis-excited antenna apparatus, and methods of tuning and utilizing the same. In one embodiment, a distributed loop antenna configuration is used within a handheld mobile device (e.g., cellular telephone).
Provided is an rfid tag, wherein a communication distance of several centimeter or more can be secured and the cost of which can be reduced in comparison to conventional on-chip antennas, even when being compact in size (square shaped with a side of 1.9 to 13 mm). The rfid tag (80) comprises an antenna (20), an ic chip (30) connected to the antenna (20), and a sealing material (10) that seals the ic chip (30) and the antenna (20).
An antenna device is provided. The antenna includes a feeding end, a grounding end, a loop metal portion and a protruded metal portion.
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.
Antenna arrangement for wireless powering
An antenna arrangement for transmitting energy is described. The antenna arrangement includes a planar array of two or more rectangular loop antennas, adapted to transmit energy at low frequencies via non-radiative resonant coupling and at high frequencies via radiative coupling.
Locating technique and apparatus using an approximated dipole signal
Location determination is performed using a transmitter including an elongated generally planar loop antenna defining an elongation axis. The elongation axis is positioned along at least a portion of a path.
Antenna for wireless power transmission and near field communication
A dual antenna for wireless communication transmission (wpt) and near field communication (nfc) includes a loop antenna, and a dual loop antenna disposed at an inside and an outside of the loop antenna.. .
Antenna system with interlocking loops and vehicle comprising such an antenna system
The invention relates to a loop antenna system comprising a first electrically conductive filiform element forming a loop portion. The antenna system further comprises a second electrically conductive filiform element forming a loop portion, and the two filiform elements have different lengths (la, lb).
Communication device and reconfigurable antenna element therein
A communication device including a ground element, an antenna element and a switching unit is provided. The antenna element is substantially a loop antenna and includes a first part, a second part and a third part.
Shared antenna structures for near-field communications and non-near-field communications circuitry
Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry and antenna structures.
Tunable dual loop antenna system
An apparatus comprising a first antenna, a second antenna, wherein the first antenna and the second antenna comprise a common conductor, a variable load connected between the common conductor and a ground connection, wherein an impedance of the variable load is variable, and wherein an operating frequency of the first antenna and the second antenna depends on the impedance, and a selection switch coupled to the first antenna and the second antenna, wherein the selection switch is configured to activate the first antenna and deactivate the second antenna in a first state, and wherein the selection switch is configured to activate the second antenna and deactivate the first antenna in a second state.. .
A loop antenna adapted for a communication device is provided. The loop antenna includes a feed, a ground, a circular loop, at least one first tuning element, and at least one second tuning element.
Mobile communication device
A mobile communication device includes a substrate, a metal frame, a feeding portion, and a parasitic portion. The substrate includes a ground plane and a non-ground area.
Near field communication device, authentication system using the same and authentication method thereof
A near field communication (nfc) device, an authentication system using the nfc device and an authentication method thereof are provided. The nfc device includes a rfid tag, a loop antenna, a flexible fabric packaging material and an emi shielding material.
Distributed loop speaker enclosure antenna
An electronic device may be provided with antenna structures. The antenna structures may be formed using a dielectric carrier structure such as a speaker enclosure, so that interior space within the electronic device that is occupied by a speaker can be used in forming an antenna.
A loop antenna includes first and second loops that are formed with respective conductive wires. In this case, the second loop is formed with a double loop having current paths of opposite directions..
Distributed loop antenna with multiple subloops
An electronic device may be provided with antenna structures. The antenna structures may be formed using a dielectric carrier structure.
Non-contact power reception apparatus and jig for fabricating core for non-contact power reception apparatus
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..
Conformal mm-wave phased array antenna with increased scan coverage
A system according to one embodiment includes a phased array antenna comprising a plurality of slot loop antenna elements, the plurality of slot loop antenna elements configured in a planar array disposed on a flexible dielectric substrate, wherein each of the plurality of slot loop antenna elements generates a beam pattern orthogonal to the plane of the planar array; and driver circuitry coupled to each of the plurality of antenna elements, wherein the driver circuitry comprises a plurality of transceivers, the plurality of transceivers configured to provide independently adjustable phase delay to each of the plurality of slot loop antenna elements.. .
Extendable loop antenna for portable communication device
The present invention discloses a wireless communication device with an extendable planar antenna. The antenna is made of a radiating loop, and a ground plane, wherein the loop is parallel to the ground plane and the distance between the loop and the ground plane is configurable, attaining at least two positions: a stowed position where the loop is close to the ground plane, and an operational position where the loop moves apart from the ground plane, to improve the antenna radiation properties.
Directional radio signal detection apparatus using a sense and loop antennas
An apparatus for direction finding a received radio signal is enclosed. The receiving apparatus selectively receives on a predetermined frequency to match the transmitter frequency.
Efficient loop antenna system and method
An antenna including a conductive loop having a first top surface portion, the conductive loop having a first edge portion interrupted by a gap defining a feed point, a conductive strip having a second top surface, the conductive loop lying in a plane defined by the second top surface, the conductive strip having a second edge portion extending between first and second opposing distal ends, the second edge portion being spaced from the first edge portion, and the second edge portion extending along the first edge portion at a substantially constant distance from the first edge portion, and wherein the conductive strip is electrically isolated from the conductive loop and is structurally configured and positioned relative to the conductive loop to adjust an input impedance of the conductive loop.. .
Circular polarized compound loop antenna
Embodiments provide single-sided and multi-layered circular polarized, self-contained, compound loop antennas (circular polarized cpl). Embodiments of the cpl antennas produce circular polarized signals by using two electric field radiators physically oriented orthogonal to each other, and by ensuring that the two electric field radiators are positioned such that an electrical delay between the two electric field radiators results in the two electric field radiators emitting their respective electric fields out of phase.
Communications system, relay communications device, relay communications device and electromagnetic induction communications device combination, electromagnetic induction communications device, information storage medium, and information storage medium production method
An object of the present invention is to provide a communication system, a relay communication device, a combination of the relay communication device and the electromagnetic induction communication device, an electromagnetic induction communication device, an information storage medium, and an information storage medium manufacturing method, in which a communication system communicating through electromagnetic induction can be implemented at low cost. A relay automatic ticket gate system provides the following.
Low power near-field communication devices
Power consumption of near-field communication devices is regulated by waking the device for communications when a potential external near-field device is detected, and by adjusting the resonant antenna circuit to account for the detected change in antenna environment. Such near-field communication devices include a resonant loop antenna circuit.
Directional radio signal detection apparatus and methods of use
An apparatus for direction-finding a received radio signal is disclosed. The receiving apparatus selectively receives on a predetermined frequency to match the transmitter frequency.