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| Number | Title | Issue Date |
| 8130166 | Coupling device for transponder and smart card with such device A coupling device is formed by a continuous conductive path having a central section and two extremity sections, the central section forming at least a small spiral for inductive coupling with the transponder device, the extremities sections forming each one large s... | 03/06/2012 |
| 7978146 | Coil antenna and portable electronic apparatus Coil units including windings are disposed on opposite sides across a virtual center line that is substantially perpendicular to a direction of positional displacement of a portable electronic apparatus that is to be disposed close to a reader/writer. The windings a... | 07/12/2011 |
| 7932871 | Orthogonal loop radiofrequency antenna device The invention concerns an orthogonal loop radiofrequency antenna device designed to receive electromagnetic waves comprising at least two loops (BH, BV) consisting of a single electrical conductor, each of said loops (BH, BV) capable of having a particular shape and... | 04/26/2011 |
| 7880684 | Small aperture broadband localizing system The present invention is directed to a small aperture broadband localizing system, comprising one or more systems for ascertaining angle-of-arrival of an electromagnetic signal and a transmit tag. A system for ascertaining angle-of-arrival of an electromagnetic sign... | 02/01/2011 |
| 7834816 | Apparatus for and method of using a diversity antenna In accordance with a preferred embodiment of the invention, an antenna structure is provided having one or more antennae arranged so as to read all possible orientations of a randomly placed tag. Also provided in accordance with a preferred embodiment of the inventi... | 11/16/2010 |
| 7834817 | Load control device having a compact antenna A load control device for controlling the power delivered to an electrical load has a power switch, a transmitter and/or a receiver in communication with a controller for the switch; a mounting yoke for a traditional style faceplate; an actuator button extending thr... | 11/16/2010 |
| 7733290 | Merchandise surveillance system antenna and method Embodiments of the invention provide a method, system and apparatus for detecting a merchandise marker in which a first antenna has a circuit having a first loop defining a first area and a second loop defining a second area substantially coplanar with the first are... | 06/08/2010 |
| 7609222 | Antenna assemblies with antenna elements and reflectors According to various aspects, exemplary embodiments are provided of antenna assemblies. In one exemplary embodiment, an antenna assembly generally includes at least one antenna element having first and second electrical paths. The antenna assembly may also include a... | 10/27/2009 |
| 7592967 | Compact antenna for a load control device A compact antenna for use in a load control device for controlling the power delivered to an electric load and operable to transmit or receive radio frequency signals at a specified frequency is presented. The antenna comprises a first main radiating loop of conduct... | 09/22/2009 |
| 7466284 | Chip seal ring having a serpentine geometry A chip seal ring that maintains the chip seal ring as a continuous barrier to contamination, while at the same time creating a desirable electrical feature in the seal ring that enables the use of an on-chip loop antenna. In one embodiment, at least a portion of the... | 12/16/2008 |
| 7446729 | Loop antenna unit and radio communication medium processor It is an object of the present invention to provide a radio communication medium processor having a stable performance that does not receive a limitation for an installed place, especially, the influence of a metallic structure, does not need to adjust the resonance... | 11/04/2008 |
| 7441711 | Semiconductor device and IC card In an IC card in which an internal circuit is operated by an internal power supply formed from alternate current from outside received by an antenna, the voltage of the internal power supply sometimes changes due to the operation of the internal circuit. Therefore, ... | 10/28/2008 |
| 7443359 | 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. A magnetic field is then generated which approximates a di... | 10/28/2008 |
| 7439926 | Planar antenna fitted with a reflector A planar antenna fitted with a reflector of small shape and small depth. A reflector 21 of planar shape is provided at the rear face of a radiator 20 of planar shape made of a triangular loop element. The side sections 21b on both sides o... | 10/21/2008 |
| 7432874 | Antenna array An antenna array for RFID antennas for large cohesive detection spaces, having an operating frequency between 100 kHz and 30 MHz. This antenna array can be connected with at least one reader. There can be at least one antenna consisting of an antenna loop having at ... | 10/07/2008 |
| 7432723 | Coupling loop A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the s... | 10/07/2008 |
| 7432872 | Compact aviation vertically polarized log periodic antenna A reduced height log periodic antenna that may safely be positioned under the rotating blades of a helicopter sitting on the ground and still resonate in the frequency range at which the antenna was originally designed to resonate. The antenna comprises a pair of an... | 10/07/2008 |
| 7427930 | Vehicular traffic sensor A vehicle traffic sensor for detecting and monitoring vehicular targets is presented. The sensor employs a planar design resulting in a reduced profile sensor. The sensor includes a multi-layer radio frequency board with RF components on one of the sides and both is... | 09/23/2008 |
| 7420520 | Wave antenna wireless communication device and method A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna may be in the form of a polygonal, elliptical curve and/or coil shape. The wireless communication device is coupled to the w... | 09/02/2008 |
| 7417599 | Multi-loop antenna for radio frequency identification (RFID) communication A multi-loop antenna is described having a plurality of conductive loops to produce an electromagnetic field for radio frequency identification (RFID) communication with RFID tags. The conductive loops are spaced apart at least a distance that is selected based on a... | 08/26/2008 |
| 7408525 | Compact radio frequency transmitting and receiving antenna and control device employing same An antenna operable to transmit or receive radio frequency signals at a specified frequency, the antenna comprising a first printed circuit board comprising a first loop of conductive material having a capacitance and an inductance, the capacitance and the inductanc... | 08/05/2008 |
| 7408517 | Tunable capacitively-loaded magnetic dipole antenna A frequency-tunable capacitively-loaded magnetic dipole antenna includes a transformer loop having a balanced feed interface, and a capacitively-loaded magnetic dipole radiator with a tunable effective electrical length. In one embodiment, the capacitively-loaded ma... | 08/05/2008 |
| 7382266 | Surface tracker A surface tracker includes a tubular marker body having an interior electronic marker and a visual indicator attached to an upper end of the marker body which extends away from the marker body. When deployed, the marker body is mostly underground and the visual indi... | 06/03/2008 |
| 7366316 | Device to transmit and receive data for remote control of hearing devices A device to transmit and receive data for remote control of hearing devices has a reduced size achieved by the transmitter coils of the transmitter and the receiver coil of the receiver being wound around a common, shared core. Moreover, a protective capacitor that ... | 04/29/2008 |
| 7362285 | Compact radio frequency transmitting and receiving antenna and control device employing same A compact antenna for use in a device for controlling the power delivered to an electric load and operable to transmit or receive radio frequency signals at a specified frequency is presented. The antenna comprises a first loop of conductive material having a capaci... | 04/22/2008 |
| 7359362 | Control of a multi-sectored antenna system to improve channel efficiency A wireless device is coupled to a multi-sector antenna that includes a plurality of different sectors, any of which can be activated to transmit and receive in a desired direction specific to that sector. Optionally, an omnidirectional antenna is included for initia... | 04/15/2008 |
| 7352338 | Wideband antenna with reduced dielectric loss A wideband antenna (10) includes a plurality of conductive strands (12) randomly interconnected and further coupled to a feedpoint (19) and a sheath (52) structurally retaining the plurality of conductive strands. The sheath can be a thin... | 04/01/2008 |
| 7342548 | Radio guidance antenna, data communication method, and non-contact data communication apparatus A radio guidance antenna in which the sum of mutual inductances of antennas is minimized. The radio guidance antenna includes a first antenna which is divided into upper and lower half regions by antenna conductors, and a second antenna which is composed of an anten... | 03/11/2008 |
| 7339546 | Contactless reading system for chip cards placed on objects A contactless reading system, wherein a chip card is fixed on a planar support of an object such as a book (11) for identification by means of the data contained in the chip card, and a mobile reader (16) provided with an antenna in order to read the d... | 03/04/2008 |
| 7336239 | Small multi-mode antenna and RF module using the same A small multi-mode antenna in which a single feeding point can be used commonly for multiple frequencies and an RF module using such antenna for use in less-costly and small multimedia wireless apparatus is provided. The antenna is configured such that a single feed... | 02/26/2008 |
| 7335845 | Air-gap switch A switching device is provided having an air-gap switch for an electrical load. The switching device can include a switch keycap configured for controlling the switching of the electrical load. A faceplate can be configured to surround the switch keycap. In addition... | 02/26/2008 |
| 7317379 | Antenna switching equipment Antenna switching equipment switches antennas for a reader/writer. A power generation unit generates electric power from an RF signal outputted from the reader/writer. A switching signal generation unit, operating on electric power generated by the power generation ... | 01/08/2008 |
| 7315278 | Multiple frequency antenna structures and methods for receiving navigation or ranging signals In a local positioning system, augmentation of the land-based system is provided by receiving signals from a GNSS. The signals from the land-based positioning system have a code phase accuracy better than one wavelength of a carrier of the signals from the GNSS. Dif... | 01/01/2008 |
| 7309002 | Differential radio frequency identification reader Systems and techniques for reading a radio frequency identification transponder are described. A transmit coil produces a transmit field to power and interrogate the transponder. A reference coil and a receive coil furnish inputs to a differential amplifier, balance... | 12/18/2007 |
| 7310070 | Radio frequency identification shelf antenna with a distributed pattern for localized tag detection In accordance with the teachings described herein, an RFID antenna system is provided for detecting RFID tags on a display structure. The antenna system may include an antenna having an elongated conductor extending from a feeding point to a grounding point in a con... | 12/18/2007 |
| 7307535 | Air coil RF transponder and method of making same An RF air coil transponder includes a rotatable carrier, such as a rigid reel. A coil is wound about the reel and at least one field influencing body for influencing the electric and/or the magnetic field within the coil is supported by the reel. The rigidity of the... | 12/11/2007 |
| 7271772 | Mobile wireless communications device comprising multi-frequency band antenna and related methods A mobile wireless communications device may include a housing and a multi-frequency band antenna carried within the housing. The multi-frequency band antenna may include a main loop conductor having a gap therein defining first and second ends of the main loop condu... | 09/18/2007 |
| 7268771 | Panel display screen with touch control function A flat panel display screen includes a flat panel display screen main unit and a touch control induction layer. The touch control induction layer is placed behind the flat panel display screen, wherein the touch control induction layer is constituted by an electroma... | 09/11/2007 |
| 7268742 | Antenna arrangement An antenna arrangement including a first antenna module having a first antenna loop positioned in a plane for emitting a signal in a first spatial area, and at least one additional antenna loop positioned in substantially the same plane for emitting a signal in an a... | 09/11/2007 |
| 7268741 | Coupled sectorial loop antenna for ultra-wideband applications A single-element antenna system that provides a wide bandwidth and consistent polarization over the frequency range to which the antenna is impedance matched. In one embodiment, the wideband antenna system includes two parallel coupled sectorial loop antennas (CSLA)... | 09/11/2007 |
