Matches 101 - 150 out of 248 < 1 2 3 4 5 >
Match Document Document Title
6753820 Communication station comprising a configuration of loosely coupled antennas  
A communication station for contactless communication with suitably formed data carriers has an antenna configuration which has at least one antenna with at least one pole and at least one antenna...
6721611 Antenna system and apparatus for radio-frequency wireless keyboard  
An antenna system for a radio frequency (“RF”) wireless keyboard includes a metallic plate as a part of the antenna system. The metallic plate is located within the wireless keyboard. A RF...
6700546 Elecronic key reader  
Electronic key reader includes a protective metal housing member having a front surface with a center and edges. At least one slot extends from at least one of the edges to the center of the front...
6696954 Antenna array for smart RFID tags  
An antenna array comprises a plurality of antenna loops disposed to define a portal or passageway or other detection region in which the plural antenna loops transmit and/or receive electromagnetic...
6693599 RF transponder  
An RF transponder having an antenna comprising at least two ports operable to receive signals such that, in use, the signals in combination establish at least two current nulls on the antenna, each...
6693598 Omni directional antenna with multiple polarizations  
An omni-directional antenna assembly is provided for wireless communication devices requiring multiple polarization characteristics. A loop antenna assembly for a communications device operating at...
6680708 Loop antenna, surface-mounted antenna and communication equipment having the same  
In order to enable one radiant electrode to transmit and receive signals with a plurality of frequency bands, in a base member, a feeding electrode to be connected to a signal supply source and an...
6667725 Radio frequency telemetry system for sensors and actuators  
The present invention discloses and teaches apparatus for combining Radio Frequency (RF) technology with novel micro-inductor antennas and signal processing circuits for RF telemetry of real time,...
6664936 Loop antenna device  
A loop antenna device has a first antenna generating a first magnetic field and a second antenna generating a second magnetic field such that the first magnetic field and the second magnetic field...
6653982 Flat antenna for mobile satellite communication  
An antenna for mobile satellite communication disposed on a substantially horizontally oriented conductive base surface having substantially linear conductor parts and an antenna connection point....
6628240 Method and apparatus for rapid staking of antennae in smart card manufacture  
A system for implanting a wire antenna in a contactless smart card includes an ultrasonic implanting head with a voice-coil actuator to control the pressure at which a heated wire is forced into a...
6608605 Multi-band uniform helical antenna and communication device having the same  
A helical antenna tuned to a first and a second resonant frequency is disclosed. The helical antenna includes an elongated conductor formed as a uniform spiral. The uniform spiral has a plurality...
6606063 Radiation synthesizer feed configurations  
Radiation synthesizer systems provide efficient wideband operation with an antenna, such as a loop, which is small relative to operating wavelength. Energy dissipation is substantially reduced by...
6603440 Arrayed-segment loop antenna  
A segmented loop antenna formed of many segments connected in an electrical loop where the segments are arrayed in multiple divergent directions that tend to increase the antenna electrical length...
6600451 Ring resonator and antenna  
Two conducting lines are arranged in a ring form in a TEM-mode transmission line. The end of one of the lines is connected to the end of the other line with opposite polarity, thus forming a...
6597318 Loop antenna and feed coupler for reduced interaction with tuning adjustments  
A printed circuit antenna with broadband input coupling is disclosed. An elongated conductive antenna element arranged in the form of a loop is disposed on a dielectric substrate formed on a ground...
6593886 Planar loop antenna  
An apparatus for conveying electromagnetic energy intermediate a host device and a medium substantially adjacent to the apparatus includes: (a) a transceiver for transmitting the energy to and...
6590541 Half-loop antenna  
The present invention relates to a half-loop antenna having an antenna half-loop positioned on top of a ground plane, the antenna half-loop forming an area whose outer edge forms a convex closed...
6590498 Method and apparatus for improving the interrogation range of an RF-Tag  
A method for increasing the interrogation range of an RF Tag in a radio communication system using RF Tags with multiple reflecting antenna elements. The reflecting antenna elements are...
6577280 Built-in antenna device for folder-type portable radio terminal  
There is provided a built-in antenna device in a folder-type portable radio terminal having a body and a folder mounted to the main body to be rotatable at a predetermined angle with respect to the...
6567050 Loop antenna compensator  
Compensating electrical circuits are incorporated into loop antenna configurations for improved energy efficiency and extension of the magnetic fields for improved magnetic field coupling and...
6522302 Circularly-polarized antennas  
Terminal ends at one side of first and second elements 2 a , 2 b whose length is approximately half the wavelength of radiated radio wave are used as first feeding points # 1, #2 and terminal...
6473047 Contactless identification system, method of contactless identification, and antenna coil  
A contactless identification system and an antenna coil capable of reliable transmission with multiple tags without a requirement of uniform distance from tag to antenna. The system also permits...
6469675 High gain, frequency tunable variable impedance transmission line loaded antenna with radiating and tuning wing  
There is disclosed a meanderline loaded antenna comprising a ground plane, two vertical elements orthogonally affixed thereto, and a horizontal element between the two vertical elements. A...
6452563 Antenna arrangement in a metallic environment  
The invention concerns an arrangement for an antenna (A) having the general shape of a loop, directly in the proximity of at least a metallic element ( 10 ). The invention is characterised in that...
6437756 Single element antenna apparatus  
An antenna for transferring electromagnetic energy includes: (a) a ground element in a ground plane; (b) a transceiver element in a transceiver plane that intersects the ground element at a first...
6395971 Apparatus for converting solar energy into electrical energy and for radiating and/or receiving high frequency electromagnetic waves  
An apparatus ( 1 ) for converting solar energy into electrical energy and for radiating and/or receiving high frequency electromagnetic waves is described. The apparatus ( 1 ) includes at least one...
6388636 Circuit module  
Circuit modules having one, two or three double-sided printed circuit boards (PCBs). Each PCB can have coils formed as spiral traces on both sides thereof. The coils can all be connected together,...
6366260 RFID tag employing hollowed monopole antenna  
A radio-frequency identification (RFID) transponder (tag) in accordance with the principles of the invention includes a hollowed monopole antenna. The hollowed monopole antenna is co-located on a...
6356243 Three-dimensional geometric space loop antenna  
An antenna system includes a first portion and a second portion. The first portion and the second portion form an antenna loop. The first portion may be etched on a printed circuit board. The...
6342862 UHF indoor TV antenna  
A UHF indoor TV antenna for providing better UHF TV reception. The UHF indoor TV antenna includes a base member being adapted to rest upon a surface; and also includes a signal receiving member...
6342856 Method of feeding flat antenna, and flat antenna  
A thin plane antenna that copes with the horizontally polarized waves and the vertically polarized waves, or the levo-rotary polarized waves and the dextro-rotary polarized waves, and in which a...
6340952 Induced loop antenna  
A loop antenna assembly ( 2 ) for an electronic device includes a primary assembly ( 21 ) and an assistant assembly ( 22 ) mounted perpendicular to the primary assembly. The primary assembly...
6329928 Magnetic induction meter intra-building communication system  
A communication system which utilizes the building metal frame as a communication medium is described. More particularly, and in accordance with one embodiment of the present invention, a wire coil...
6320550 Contrawound helical antenna  
A contrawound helical antenna produces a uniformly directed circulation of magnetic current with a plurality of magnetic dipole elements. In one embodiment, the magnetic dipole elements have the...
6307518 Antenna configuration of an apparatus for detecting a child safety seat placed on a seat of a motor vehicle  
An antenna configuration in an apparatus for detecting a child safety seat placed on a seat in a motor vehicle. A single transmitting antenna formed as a loop surrounds two loop-shaped receiving...
6271804 Antenna for mounting on vehicle, antenna element and manufacturing method thereof  
An antenna for mounting on a vehicle which restrains damping of a signal voltage by reducing a stray capacitance of a signal path and has an improved antenna characteristic and a short physical...
6259416 Wideband slot-loop antennas for wireless communication systems  
A wideband slot-loop antenna is described which comprises a generally planar loop element having a generally rectangular outer perimeter and a slot defining an inner perimeter, the mid portion of...
6252561 Wireless LAN antenna with single loop  
A wireless LAN antenna comprises a dielectric substrate having a first surface and a second surface. The first surface of the dielectric substrate has a rectangular loop. A rectangular grounding...
6243045 Removal data storing medium having loop antenna  
An antenna device including a loop antenna main body having a predetermined aperture area, and a conductor element insulated from the loop antenna main body, connected to a ground potential, and...
6239760 Contrawound toroidal helical antenna  
An electrically small broadband antenna comprises a plurality generalized contrawound toroidal helical antenna elements, each made from a single continuous conductor divided into two length...
6239753 Transmitter-and-receiver device  
An earthing conductor is disposed on the reverse of a print board, and a signal process circuit section including a transmit-and-receive circuit is disposed on the right side of the board. A...
6236316 Transport device with openings for capacitive coupled readers  
Identification tags (22) are secured to objects (20) moving upon a transport band (16). The identification tags (22) each contain a transponder circuit (32) in electrical communication with...
6218998 Toroidal helical antenna  
In an electromagnetic antenna a continuous conductor comprises a first length portion and a second length portion, the first and second length portions each having a first end and a second end...
6215455 Armored magnetic field antenna in printed circuit  
A shielded magnetic-field antenna has at least one turn of a metallic element and metallic tubular shielding positioned around the element. The turn (3a) is produced in a printed circuit on a card...
6188371 Low-profile adjustable-band antenna  
A low-profile antenna includes a ground-plane element defining a ground plane and an elongated radiator element configured and disposed in relation to the ground plane to define a vertical loop...
6184836 Dual band antenna having mirror image meandering segments and wireless communicators incorporating same  
Small antennas for internal mounting within wireless communicators, such as radiotelephones, that can operate within multiple frequency bands, including low frequency bands are provided. A planar...
6181257 Universal utility usage data gathering system  
A universal utility usage data gathering system that is capable of operating with any other read pad data gathering system, regardless of protocol. The universal system comprises of two components....
6166706 Rotating field antenna with a magnetically coupled quadrature loop  
A rotating field antenna is provided which includes a figure eight shape loop, a center loop magnetically coupled to the figure eight shape loop, and a drive element for driving the figure eight...
6161761 Card assembly having a loop antenna formed of a bare conductor and method for manufacturing the card assembly  
A card assembly (10) comprises a polymeric layer (16) having a generally planar surface (24), an integrated circuit component (38) adjacent to the polymeric layer (16), and a loop antenna (24)...
Matches 101 - 150 out of 248 < 1 2 3 4 5 >