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7620421 |
Antenna apparatus enabling easy reception of a satellite signal and a mobile object equipped with the antenna apparatus
In addition to an FM reception antenna element for receiving an FM radio wave and an FM receiver connected to the FM reception antenna element, a mobile object is provided with a first antenna...
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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...
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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...
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7579995 |
Near field nulling antenna systems
An antenna system is provided. The antenna system comprises a first antenna with a first operating frequency and a second antenna with a second operating frequency. The second antenna has a first...
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7579994 |
Flat plate antenna with a rotating field, comprising a central loop and eccentric loops, and system for identification by radiofrequency
An antenna includes a central loop and four adjacent coplanar eccentric loops. The central loop creates a magnetic field that is essentially perpendicular to the antenna. The centres of gravity of...
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7576655 |
RFID conveyor system and method
A conveyor system for processing items on which radio frequency identification tags are disposed includes a frame and a generally planar conveyor that is disposed moveably on the frame and that...
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7570168 |
Antenna for communication with a multitude of transponders
An antenna ( 1 ) for communication with a multitude of transponders ( 6 a . . . 6 c ) is provided, the antenna ( 1 ) having an antenna conductor ( 2 ) which completely encloses at least one...
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7559477 |
Low voltage signal stripping circuit for an RFID reader
A reader of an RFID system has excitation circuitry for generating a higher voltage excitation signal, receiving circuitry for reading a lower voltage transponder signal and an antenna coupled with...
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7554501 |
Loop antenna having matching circuit integrally formed
A loop antenna is provided having a matching circuit integrally formed includes a radiator which is formed in a loop shape; and a matching circuit including an extension part extended from one side...
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7541930 |
Apparatus and method for controlling diverse short-range antennas of a near field communications circuit
An intelligent antenna system for extending the effective communication range of a machine-readable passive tag. The system may include intelligence that allows one of a plurality of extension...
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7518563 |
Windmill-shaped loop antenna having parasitic loop antenna
There is provided a windmill-shaped loop antenna including: a dielectric substrate; a first radiation unit disposed on a top surface of the dielectric substrate and including a metal pattern having...
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7511670 |
Dual-polarized, multiple strip-loop antenna, and associated methodology, for radio device
A dual-polarized antenna, and an associated methodology, is provided for a radio device, such as a mobile station. The antenna is formed of a plurality of loop strips disposed upon a substrate. The...
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7505009 |
Polarization-diverse antenna array and associated methods
The polarization-diverse antenna array includes three orthogonal loop antennas having a common center, e.g. together defining a sphere. Each loop antenna includes a loop electrical conductor. Two...
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7504951 |
Interface antenna
An interface antenna is positioned between a tag antenna associated with a tag and a reader antenna associated with a reader. The interface antenna receives an electromagnetic carrier signal...
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7495626 |
Antenna for electron spin radiation
An antenna for generating electron spin radiation corresponding to a signal from a radio frequency communications device includes a substantially cylindrical conductor, a first spiral-wound flat...
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7482934 |
Communication device and communication method
A communication device includes a radio frequency identification tag that performs a radio communication with a predetermined device. A first metal body has an electrical conductivity. A space...
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7456798 |
Stacked loop antenna
A small transceiver device and antenna system has an insulating layer with first and second surfaces. A transmit loop element having transmit loop segments is formed on the first surface. The...
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7453408 |
Detection or identification antenna insensitive to the environment thereof
A resonant detection or identification antenna having at least one turn the antenna includes at least one electrically conducting wire and is connected to an electronic transponder chip, the...
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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...
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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...
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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...
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7436309 |
Identifiable packaging
A packaging body is designed such that plate-shaped products can be stacked therein in a stacking direction. An antenna is fitted to the packaging body. The antenna is in the form of a coil having...
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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...
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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...
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7421245 |
Field-shaping shielding for radio frequency identification (RFID) system
A radio frequency identification (RFID) system is described that utilizes a substantially-contiguous conductive shield to shape an electromagnetic field formed by an antenna for communication with...
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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...
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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...
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7400298 |
Radio frequency identification tagging
A RFID tag or label comprises a RFID tag module (comprising an electronic identification circuit and a coupling means) and an antenna structure coupled to the coupling means. The RFID tag module is...
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7360712 |
Method and device for protecting text for reading
A method and a device for protecting text for reading ( 23 ), arranged on at least one written face ( 22 ) of an object ( 25 ). The object ( 25 ) is connected to at least one matching antenna ( 12...
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7358903 |
Triple-band embedded antenna
A triple-band embedded antenna includes an antenna base and a metal connecting board. A left groove, a right groove and a square opening are formed in the antenna base. A left branch is separated...
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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...
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7342500 |
Compact microstrip transponder antenna
A transponder formed on a circuit substrate having a longitudinal axis and a transverse axis. An antenna is disposed on one side of a transverse axis, extending in a longitudinal direction, and the...
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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...
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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...
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7308286 |
Multi-dimensional joint searcher and channel estimators
A wireless communication receiver ( 20 ) comprises an antenna structure ( 22 ) and a joint searcher and channel estimator ( 24 ). The antenna structure acquires dimensionally differentiated signals...
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7295113 |
Controller for accessing multiple radio frequency identification (RFID) readers
A radio frequency identification (RFID) controller within an RFID system includes an RFID interrogator interface configured to receive signals from RFID interrogators and configured to manage the...
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7292198 |
System and method for an omnidirectional planar antenna apparatus with selectable elements
A system and method for a wireless link to a remote receiver includes a communication device for generating RF and a planar antenna apparatus for transmitting the RF. The planar antenna apparatus...
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7286098 |
Circular polarization antenna and composite antenna including this antenna
When configuring a film antenna for receiving a circular polarized wave, at least one loop antenna is formed on a transparent plastic film and, at the same time, a non-powered element constituted...
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7280045 |
Machine-readable tag, selectable extension antennas for use therewith, and display structure having such tag
An intelligent antenna system for extending the effective communication range of a machine-readable passive tag. The system includes intelligence that allows one of a plurality of extension...
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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...
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7262743 |
Passive device for increasing the transmission efficiency of radio-frequency systems
Radio-frequency transmission device comprising a transmission antenna ( 2 ) and a receiving antenna ( 4 ), characterised by comprising one or more passive resonant circuits ( 5 ) positioned between...
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7259726 |
Compact loop antenna for inductive read/write apparatus
In order to provide a compact loop antenna, for use in an inductive read/write apparatus, capable of extending a communication range even if the antenna area or power supply thereto is constrained,...
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7245876 |
System and method for secure wireless connection
A system and method for implementing a wireless communications link between two equipment envelopes through inductive coupling include two “U” shaped inductors. Wireless communications is...
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7242359 |
Parallel loop antennas for a mobile electronic device
A mobile electronic device, such as a smart personal object includes an antenna system for emitting and receiving signals. The antenna system includes at least two antennas electrically connected...
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7227504 |
Gate antenna device
A gate antenna device has a plurality of loop antennas which supplies power and transmission data to an IC-integrated medium through electromagnetic induction and acquires reception data in the...
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7205947 |
Litzendraht loop antenna and associated methods
The antenna includes a Litz wire loop having a plurality of individually insulated wires braided together and a plurality of splices therein to define distributed capacitors. A magnetically coupled...
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7187336 |
Rotational polarization antenna and associated methods
The antenna includes a base and a plurality of antenna feeds carried by the base for respective different rotational polarizations. A plurality of inner elongate convex coupler elements are carried...
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7183987 |
Antenna apparatus, and communications apparatus using same
An antenna apparatus ( 60 ) is provided which is used in a recorder and/or player to write and read data to and from a contactless IC card ( 1 ). The antenna apparatus ( 60 ) includes a loop coil (...
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7176798 |
System for spatially adjustable excitation of leadless miniature marker
A system for generating a magnetic field for excitation of a leadless marker assembly. The system of at least one embodiment includes a source generator that generates a plurality of alternating...
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7154449 |
Antenna
An antenna suitable for use in a Radio Frequency Identification (RFID) tag is disclosed. The antenna includes a plurality of discrete loop antennas ( 130, 140, 150 ) disposed concentrically on a...
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