Matches 51 - 100 out of 248 < 1 2 3 4 5 >
Match Document Document Title
7183921 System for tracking items  
An item tracking system for tracking an item within a structure having at least one aperture through which the item is passed is provided. The item tracking system comprises a radio frequency tag...
7173573 Insertion-port loop antenna and non-contact type communication medium processing unit  
An insertion-port loop antenna has a wide communication region for a non-contact type IC card inserted into an insertion port of a card reader, etc. An insertion-port loop antenna is mounted in the...
7167134 Antenna unit and watch having the antenna unit  
In one antenna unit, a non-electrically conductive resin layer is provided on a core portion of electrically conductive material and a winding portion is configured by a coil wound on the layer....
7164387 Compact tunable antenna  
The present disclosure relates to a method and an antenna for transmitting/receiving a RF signal at a plurality of different frequencies. Transmitting/receiving a RF signal at a plurality of...
7136027 Antenna structure of a wireless receiver  
The present invention relates to an antenna structure of a wireless receiver arranged to be connected to a computer, and which can be disposed alternatively in vertical and horizontal orientations...
7132996 Plasma production device and method and RF driver circuit  
An RF driver circuit and an orthogonal antenna assembly/configuration, are disclosed as part of a method and system for generating high density plasma. The antenna assembly is an orthogonal antenna...
7129905 Multiple band antenna apparatus  
An antenna apparatus capable of receiving AM radio broadcasting and FM radio broadcasting and being realized at a low cost includes an FM antenna conductor for receiving FM broadcasting formed with...
7126556 Digital indoor antenna device  
A digital indoor antenna device having a casing, a pivotal seat, a circular antenna having two ends and a PCB in the casing. The pivotal seat attached to the casing has two mounting holes...
7123210 Loop-type antenna  
The invention concerns an antenna for use as transmission/reception beacon ( 2 ), in a radio frequency identifying system, having a general upturned U configuration, located in a vertical plane,...
7113138 Radio antennas  
A radio transmitting or receiving antenna which is physically compact being typically no more than three percent of a wavelength in any dimension. The antenna comprises two electrical conducting...
7102519 Concentric tag-reader method and system for RFID  
A system and apparatus for identification of RFID-tagged items includes one or more interrogator units communicating over a network, the interrogator unit comprising a hanger support upon which...
7100532 Plasma production device and method and RF driver circuit with adjustable duty cycle  
A reactive circuit is disclosed as part of a method and system for generating high density plasma that does not require the use of a dynamic matching network for directly driving a plasma...
7091925 Flat indoor UHF antenna device for a digital television  
An indoor UHF antenna device for a digital television includes a flat structural design. The flat indoor UHF antenna device includes a circuit board having a wireless signal processing circuit and...
7091911 Mobile wireless communications device comprising non-planar internal antenna without ground plane overlap  
A mobile wireless communications device may include a housing, a main dielectric substrate carried by the housing, circuitry carried by the main dielectric substrate, and a ground plane conductor...
7084832 Plasma production device and method and RF driver circuit with adjustable duty cycle  
An RF driver circuit and an orthogonal antenna assembly/configuration, are disclosed as part of a method and system for generating high density plasma. The antenna assembly is an orthogonal antenna...
7079084 Antenna element, loop antenna using the antenna element, and communications control apparatus using the antenna for wireless communications medium  
The invention presents an antenna element capable of attenuating electric far filed while suppressing attenuation of magnetic near field of electromagnetic field radiated from loop antenna as an...
7079080 Circularly polarized antenna and rectenna using this antenna  
A loop antenna unit ( 2 ), a balanced line ( 3 ), and two perturbation elements ( 4 ) are formed on a dielectric board ( 1 ) by using manufacturing methods, such as printing and etching. The loop...
7068230 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...
7057574 Method for designing a small antenna matched to an input impedance, and small antennas designed according to the method  
A method for designing a high performance, small antenna that is matched to a required output impedance, does not require filtering, is simple and inexpensive to manufacture, and is easily...
7053857 Loop antenna having better directivity in low range of angle of elevation  
In a loop antenna including a circuit board, a cylindrical body standing on a surface of the circuit board, and a loop antenna element formed on the cylindrical body along the peripheral surface, a...
7053856 Omni-directional, orthogonally propagating folded loop antenna system  
The present invention relates to an omni-directional, orthogonally propagating, one-quarter wavelength folded loop antenna. The antenna may be embodied in a wire, flat metal stock or printed...
7050007 Electronic device with communication capability  
A communication-capable electronic device is provided which includes a metallic housing ( 122 ) to accommodate electronic parts of the device, and a communication terminal ( 90 ) that makes...
7038634 Optimization of a loop antenna geometry embedded in a wristband portion of a watch  
The invention relates to a wireless instrument ( 1 ) including a wristband ( 2 ) having two band portions ( 2 a, 2 b ) connected to opposite edges of a casing ( 3 ), each band portion having upper...
7019711 Coupled transponder and antenna system and method  
An annular antenna loop is electrically coupled to a transponder. The antenna and the transponder are at least partially embedded into a non-conductive carrier strip to form a ring assembly to...
6995732 Broadband antenna having a three-dimensional cast part  
An antenna ( 10 ) having an emitter element which is positioned in front of a conductive reflector ( 13 ) and has a three-dimensional cast part. The cast part is implemented as conductive and has a...
6995731 Multiple coil antenna for a tire parameter sensing system with inductively coupled tire-based units  
An antenna ( 96 ) for use in inductive coupling two devices ( 34 and 42 ) includes a first coil ( 180 ) having a first inductance value, a second coil ( 190 ) having a second inductance value,...
6987453 Security element for electronic surveillance of articles  
A radio frequency security element is provided for electronic surveillance of articles of merchandise. The security element comprises a lower strip conductor ( 1 ) and an upper strip conductor ( 5...
6970141 Phase compensated field-cancelling nested loop antenna  
A phase compensated loop antenna having phase compensation elements distributed along the length thereof. The phase compensation elements compensate for current variations along the antenna length...
6961024 Transmitting and receiving apparatus  
An antenna for transmitting information by means of electromagnetic fields in free space is formed as a supertoroidal conductor, comprising a helical coil of wire with the coil itself being wound...
6960984 Methods and systems for reactively compensating magnetic current loops  
Methods and systems for compensating magnetic current loops provide current magnitude and phase uniformity within the magnetic current loops. A magnetic current loop is divided into k sections....
6958737 Loop antenna for a mobile terminal capable of reducing specific absorption rate  
A loop antenna for a mobile terminal capable of reducing SAR. The loop antenna has three lines. The first line generates and transmits predetermined electric waves upon receiving current from an...
6943688 Antenna arrangement for RFID smart tags  
An antenna arrangement comprises at least two antenna loops disposed and overlapping in a plane to define a detection region adjacent thereto in which the antenna loops transmit and/or receive...
6927742 Electromagnetic-induction system with optimum antenna layout and the method for forming the same  
This invention utilizes the design rule with minimum path to design the antenna layout so as to reduce the across-line effect, and it also makes changes in antenna address to design the optimum...
6924777 Enhanced antenna using flexible circuitry  
An antenna is disclosed that comprises a flexible printed circuit material having first and second halves that are joined by a fold section. A coil trace is on the first half and a coil trace is on...
6922173 Reconfigurable scanner and RFID system using the scanner  
A scanner has plasma loop or plasma window antennas for selectively scanning for ID tags along distinct radials of the scanner. Scanner elements are made electromagnetically invisible to adjacent...
6917335 Antenna with shorted active and passive planar loops and method of making the same  
An internal antenna for wireless devices comprising a ground plane and a planar loop antenna. The shorted loop antenna is provided with a gap and operates at a quarter wavelength. The compact...
6911947 Method and apparatus for reducing multipath distortion in a television signal  
The disadvantages associated with the prior art are overcome by a method and apparatus for reducing multipath distortion in a television signal. Specifically, a plurality of antenna elements...
6909401 Antenna device  
An antenna device for a radio communication device, preferably a portable radio communication device, comprising a first antenna element ( 20 ) comprising a first feeding portion ( 22 ) connected...
6894615 Article with retroreflective and radio frequency-responsive features  
The present disclosure includes a system that provides visual and electronic information in a readily identifiable system. For example, the present disclosure is directed to a combination tag,...
6885354 Non-contact communication medium  
A loop antenna is formed on one side of a circuit board and an IC chip is mounted on the same side of the circuit board. An inner end of the loop antenna is connected to an antenna connection...
6879299 Induction antenna loop for low-level digital tablets  
The present invention provides an antenna loop and its layout for low-level digital tablets. The antenna loop for low-level digital tablets in the present invention consists of enameled wire; the...
6876334 Wideband shorted tapered strip antenna  
Disclosed are systems and methods which provide a tapered conductor strip adapted for broadband wireless communication. Embodiments provide a conductor strip which is curved along its face, thereby...
6839035 Magnetically coupled antenna range extender  
A magnetically coupled antenna range extender structured to be interposed between an RF antenna and an electronic device. The antenna range extender is positioned between and proximate to one of...
6830193 Non-contact IC card  
A non-contact IC card includes an information storage unit for storing information, a communication controller for controlling communication with an external device, and a loop antenna for...
6822614 Loop antenna  
A loop antenna system. The loop antenna system for a wireless transmission device having a signal end and a ground end, includes a loop antenna having a toroidal helix wire with a first end coupled...
6816122 Four-point feeding loop antenna capable of easily obtaining an impedance match  
In an electromagnetic coupling type four-point feeding loop antenna ( 10 ) comprising a tubular body ( 11 ), a loop portion ( 12 ) having a loop width (W 1 ), four feeders ( 13 ) each having a...
6809700 Tag housing and assembly method for annular apparatus  
A housing for a tag assembly comprises an internal chamber defined by sidewalls and a bottom wall; a peripheral flange projecting from the housing; convergent surfaces extending at an upper housing...
6788270 Movable antenna for wireless equipment  
Antennas and methods of manufacturing and using antennas suited for use in mobile devices are described. The described antennas include an antenna arm ( 104 ) and a conical spring radiating element...
6781551 Hand-held transmitter and/or receiver unit  
A handheld transmitter and/or receiver for use in a frequency band B with an electric power less than or equal to 10 mW, wherein the frequency band is 50 MHz≦B≦500 MHz. A transmitter and/or...
6774859 Ultra wideband antenna having frequency selectivity  
An electromagnetic antenna apparatus exhibits a generally continuous signal response between a first frequency and a second frequency, and further exhibits a deviation from the signal response in a...
Matches 51 - 100 out of 248 < 1 2 3 4 5 >