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Loop Antenna patents



      
           
This page is updated frequently with new Loop Antenna-related patent applications. Subscribe to the Loop Antenna RSS feed to automatically get the update: related Loop RSS feeds. RSS updates for this page: Loop Antenna RSS RSS


Chassis-excited antenna apparatus and methods

Rfid tag

Antenna

Date/App# patent app List of recent Loop Antenna-related patents
08/14/14
20140227969
 Indium tin oxide loop antenna for near field communication patent thumbnailIndium tin oxide loop antenna for near field communication
An apparatus includes a display and a transceiver. The display has a lateral surface.
08/14/14
20140225787
 Chassis-excited antenna apparatus and methods patent thumbnailChassis-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).
08/14/14
20140224887
 Rfid tag patent thumbnailRfid tag
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).
07/31/14
20140210682
 Antenna patent thumbnailAntenna
An antenna device is provided. The antenna includes a feeding end, a grounding end, a loop metal portion and a protruded metal portion.
06/26/14
20140176373
 Multiple input loop antenna patent thumbnailMultiple 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.
06/26/14
20140176082
 Antenna arrangement for wireless powering patent thumbnailAntenna 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.
06/19/14
20140167764
 Locating technique and apparatus using an approximated dipole signal patent thumbnailLocating 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.
06/05/14
20140152516
 Antenna for wireless power transmission and near field communication patent thumbnailAntenna 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.. .
05/29/14
20140145905
 Antenna system with interlocking loops and vehicle comprising such an antenna system patent thumbnailAntenna 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).
05/29/14
20140145900
 Communication device and reconfigurable antenna element therein patent thumbnailCommunication 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.
05/22/14
20140139380
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.
05/15/14
20140132465
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.. .
05/08/14
20140125547
Loop antenna
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.
04/24/14
20140113693
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.
04/10/14
20140097243
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.
03/27/14
20140086441
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.
03/27/14
20140085162
Loop 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..
03/27/14
20140085161
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.
03/27/14
20140084861
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..
03/13/14
20140071018
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.. .
02/20/14
20140049443
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.
02/20/14
20140049428
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.
02/13/14
20140043109
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.. .
01/23/14
20140022142
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.
01/16/14
20140015649
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.
01/09/14
20140011450
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.
01/02/14
20140002306
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.
12/26/13
20130342973
Electronic device
An electronic device is provided. The electronic device includes a metal housing, a first opening, a first metal line, a first grounding point and a first current zero point.
11/21/13
20130307740
Loop antenna with switchable feeding and grounding points
An active differential antenna is described that provides for improved performance for wireless communication systems across a wide set of use cases and environments. A balanced antenna structure along with switch assembly provides the differential mode radiation which results in minimal coupling to the components and items in the near field of the antenna.
11/07/13
20130293427
Looped multi-branch planar antennas having a floating parasitic element and wireless communications devices incorporating the same
Antenna systems are provided including a ground plane; a loop antenna positioned on the ground plane on a first layer, the loop antenna having antenna feed positioned at a center of an edge of the first layer; and a multi-branch parasitic element electrically coupled to the loop antenna, the multi-branch parasitic element being parallel to and positioned above the ground plane on a second layer, different from the first layer, wherein the loop antenna on the first layer is positioned between the ground plane and the multi-branch parasitic element on the second layer. Related wireless communications devices and loop antennas are also provided herein..
11/07/13
20130293354
Discontinuous loop antennas suitable for radio-frequency identification (rfid) tags, and related components, systems, and methods
Discontinuous loop antennas and related components, radio-frequency identification (rfid), tags, systems, and methods are disclosed. A discontinuous loop antenna is an antenna loop structure that includes a discontinuity portion.
11/07/13
20130293333
Discontinuous loop antennas suitable for radio-frequency identification (rfid) tags, and related components, systems, and methods
Discontinuous loop antennas and related components, radio-frequency identification (rfid), tags, systems, and methods are disclosed. A discontinuous loop antenna is an antenna loop structure that includes a discontinuity portion.
10/31/13
20130285860
Mobile wireless device with multi-band loop antenna with arms defining a slotted opening and related methods
A mobile wireless communications device may include a housing, a printed circuit board (pcb) carried by the housing. The device may also include an antenna coupled to wireless transceiver circuitry carried by the pcb.
10/17/13
20130271340
Air loop antenna for shared am/fm
Systems and methods are disclosed for shared am/fm air loop antennas that may be advantageously implemented to provide a am/fm receiver system with a single common air loop antenna for receiving both am and fm channels, thus eliminating the need for additional materials and electronics associated with provision of a separate fm pigtail antenna and fm antenna jack for connection of same. The shared am/fm air loop antennas may be connected to a radio device having antenna connections..
10/10/13
20130267831
Mri guidewire
A guidewire (100) for use with interventional magnetic resonance imaging has a guidewire body (102) having a distal end and a proximal end and reserving a space therein, a dipole antenna (108) disposed in the space reserved within the guidewire body, the dipole antenna being adapted to be electrically connected to a signal processing system through a first signal channel (110) through the proximal end of the guidewire body, and a loop antenna (112) disposed in the space reserved within the guidewire body toward the distal end of the guidewire body, the loop antenna (112) being adapted to be electrically connected to the signal processing system through a second signal channel (114) through the proximal end of the guidewire body. The dipole antenna and the loop antenna are each constructed to receive magnetic resonance imaging signals independently of each other and to transmit received signals through the first and second signal channels, respectively, to be received by the signal processing system.
09/26/13
20130249663
Antenna device for near field wireless communication and portable terminal having the same
An antenna device for near field wireless communication which may be mounted at a part of a black mark (bm) region of a window, and a portable terminal having the same are provided. The antenna device for near field wireless communication mounted in the portable terminal having a bm region, includes: a plurality of flexible printed circuit board layers stacked at a partial region of a lower portion of the bm region, a plurality of conductive antenna patterns of a loop type provided for the plurality of flexible printed circuit board layers, respectively, and a plurality of through holes through which adjacent conductive antenna patterns are connected to each other among the plurality of conductive antenna patterns of a loop type such that the plurality of conductive antenna patterns are electrically connected to each other so as to define one loop antenna..
09/19/13
20130241784
Communication device and tunable antenna element therein
A communication device includes a ground element, an antenna element, a circuit element group, and a communication module. The antenna element is a loop antenna.
09/19/13
20130241782
Antenna structure in wireless communication system and operation method thereof
An antenna device in a wireless communication includes antenna wires of four sides which include three feeding points and have a loop structure and four main switches which are located among the antenna wires of the four sides, wherein the antenna device operates as a loop antenna when the antenna wires of the four sides are connected according to operations of the main switches and wherein the antenna device operates as dipole antennas when the antenna wires of the four sides are disconnected according to operations of the main switches.. .
08/15/13
20130207873
Method of loop antenna and improved loop antenna thereof
An improved method of loop antenna and improved loop antenna thereof are provided, the method is used to generate an antenna resonant frequency for a conformed specific communication by modifying a resonant wavelength of a basic loop antenna. The improved method of loop antenna includes the following steps: connecting a first antenna radiator to a resonant point of the basic loop antenna electrically, and using an additional length from the connected first antenna radiator additional length to increase the resonant wavelength of the basic loop antenna, in order to generate an antenna resonant frequency conformed to the specific communication system..
08/08/13
20130201074
A loop antenna for mobile handset and other applications
There is disclosed a loop antenna for mobile handsets and other devices. The antenna comprises a dielectric substrate (23) having first and second opposed surfaces and a conductive track (24) formed on the substrate (23).
08/08/13
20130201066
Wireless communications device having loop antenna with four spaced apart coupling points and reflector and associated methods
A wireless communications device may include wireless communications circuitry and an antenna coupled to the wireless communications circuitry. The antenna may include a loop electrical conductor having four spaced apart gaps therein defining four respective spaced apart coupling points, and a feed assembly.
08/08/13
20130201065
Wireless communications device having loop antenna with four spaced apart coupling points and associated methods
A wireless communications device includes wireless communications circuitry and an antenna coupled to the wireless communications circuitry. The antenna includes a loop electrical conductor having four spaced apart gaps therein defining four respective spaced apart coupling points, and a feed assembly.
08/01/13
20130196711
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.. .
08/01/13
20130196593
Portable through-the-earth radio
The present invention provides an apparatus for portable through-the-earth radio (ptter). The ptter provides bidirectional voice and/or data communication between a surface radio and a portable radio.
08/01/13
20130194156
Lte antenna pair for mimo/diversity operation in the lte/gsm bands
There is disclosed a multiple-input multiple-output (mimo) antenna system comprising first and second folded or compacted loop antennas (12, 121). The antennas each have a longitudinal extent and are mounted substantially parallel to each other on a dielectric substrate (3) having a conductive groundplane (31, 32).
07/18/13
20130181718
Buried object detector
A buried object detector comprising: a loop antenna and an rf source, the rf source coupled to the loop antenna and arranged to feed the loop antenna with an rf signal, the detector further comprising a detector circuit coupled to the loop antenna and arranged to detect changes in the quality factor of a resonant circuit formed by the loop antenna, wherein the loop antenna is arranged to magnetically couple with a buried object, thereby reducing the quality factor of the resonant circuit.. .
07/18/13
20130181056
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.. .
06/27/13
20130162488
Antenna unit and radio communication device
An antenna unit and a radio communication device are provided. An antenna unit has a monopole antenna section and a loop antenna section.
06/27/13
20130162487
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..
06/13/13
20130149960
Drop zone rally point beacon
A vlf beacon operates in the near field of the antenna, providing a low impedance (magnetic) wave located by employing simple amplitude gradient and phase alignment direction finding (df) methods. When rotated, the beacon antenna radiates its signal with little attenuation.
06/06/13
20130141290
Antenna device
Both ends of a feeder and both ends of a reflector of an antenna device are connected using a pair of diodes. When the diodes are turned on, a loop antenna is formed which loops the feeder, the diode, the reflector, a capacitor, and the diode, and the antenna device operates as the loop antenna.
05/30/13
20130135173
Multiband loop antenna
An approximately planar antenna assembly can be formed or used, such as comprising a printed circuit board assembly. In an example, the approximately planar antenna assembly can include a dielectric material and a conductive loop comprising an outer loop portion having a first conic section an inner loop portion having a second conic section located within a footprint of the first conic section.
05/23/13
20130127672
Distributed loop antennas with extended tails
Electronic devices may be provided with antenna structures such as distributed loop antenna resonating element structures. A distributed loop antenna may be formed on an elongated dielectric carrier and may have a longitudinal axis.
05/23/13
20130126611
Rfid scanning system and shopping bag with integrated rfid loop antenna
A point of sale system includes a shopping bag having one or more rfid loop type antenna. One system includes a bag holder for securing the shopping bag while items are placed inside.
05/09/13
20130113669
Rotating-polarization reflector-backed rfid loop antenna apparatus and method
The present disclosure provides a rotating-polarization reflector-backed radio frequency identification (rfid) loop antenna apparatus and method. The loop antenna apparatus and method provides high gain (i.e., maximizing read distances at lowest power), directionality (i.e., ability to focus on specific areas), orientation insensitivity (i.e., ability to read rfid tags in any direction or orientation) while occupying minimal volume in overhead configurations.
05/09/13
20130113666
Capacitively coupled compound loop antenna
A compound loop antenna (cpl) is described that includes a capacitively fed magnetic loop and/or a capacitively fed electric field radiator. Embodiments include single-band cpl antennas and multi-band cpl antennas.
04/04/13
20130082895
Antenna structures with molded and coated substrates
Electronic devices may be provided with antenna structures. The antenna structures may be used in wirelessly transmitting and receiving radio-frequency signals.
03/28/13
20130079069
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.
03/28/13
20130078910
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).
03/21/13
20130068843
Rfid gasket structure
Described are rfid structures. An rfid structure includes a planar gasket layer with a tensile modulus value less than 5 gpa.
03/14/13
20130063318
Dual-band inverted-f antenna apparatus provided with at least one antenna element having element portion of height from dielectric substrate
An antenna apparatus includes firs and second antenna elements. The first antenna element operates as a loop antenna that resonates at a first wavelength, and the antenna apparatus operates as an inverted-f antenna that resonates at a second wavelength.
03/07/13
20130057442
Multi-layered multi-band antenna
Embodiments provide multi-band, compound loop antennas (multi-band antennas). Embodiments of the multi-band antennas produce signals at two or more frequency bands, with the two or more frequency bands capable of being adjusted and tuned independently of each other.
03/07/13
20130057441
Multi-layered multi-band antenna with parasitic radiator
Embodiments provide multi-band, compound loop antennas (multi-band antennas). Embodiments of the multi-band antennas produce signals at two or more frequency bands, with the two or more frequency bands capable of being adjusted and tuned independently of each other.
03/07/13
20130057440
Single-sided multi-band antenna
Embodiments provide multi-band, compound loop antennas (multi-band antennas). Embodiments of the multi-band antennas produce signals at two or more frequency bands, with the two or more frequency bands capable of being adjusted and tuned independently of each other.
02/28/13
20130050050
Distributed loop antennas
Electronic devices may be provided with antenna structures such as distributed loop antenna resonating element structures. A distributed loop antenna may be formed on an elongated dielectric carrier and may have a longitudinal axis.
02/28/13
20130050045
Multiple-turn loop antenna arrangement and a portable radio communication device comprising such an arrangement
An exemplary embodiment includes a multiple-turn loop antenna arrangement comprising a multiple-turn loop element. The multiple-turn loop element is arranged in a first layer.
02/07/13
20130033403
Antenna and mobile terminal including the same
Provided are an antenna and a mobile terminal including the antenna. The antenna includes a loop antenna, a solenoid, and a plurality of connections.
01/31/13
20130027254
Multiband slot loop antenna apparatus and methods
A multiband slot loop antenna apparatus, and methods of tuning and utilizing the same. In one embodiment, the antenna configuration is used within a handheld mobile device (e.g., cellular telephone or smartphone).
01/31/13
20130026586
Cross-loop antenna
An antenna is provided. This antenna is contained within a package that is secured to an ic (which allows radiation to propagated away for a printed circuit board so as to reduce interference), and this antenna includes two loop antennas that are shorted to ground and that “overlap” and includes a “via wall.” with this configuration, circular polarization can be achieved by varying the relative phases of the input signals, and the “via wall” improves efficiency by reducing surface waves..
01/24/13
20130023220
Signal receiving apparatus and wireless communiction device
A signal receiving apparatus includes a first base member, a first coil, and a tuning circuit. The first coil is coiled around the first base member to from a first loop antenna having a plurality of parallel and spaced coil portions and two signal output terminals.
01/24/13
20130021208
Loop antenna
A loop antenna is provided. The apparatus comprises a substrate, a first metallization layer, and a second metallization layer.


Popular terms: [SEARCH]

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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This listing is a sample listing of patent applications related to Loop Antenna for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Loop Antenna with additional patents listed. Browse our RSS directory or Search for other possible listings.
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