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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....
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7167140 |
Coil antenna
A coil antenna having a magnetic core and a wire wound around the magnetic core. The magnetic core is flexible and bendable and is made of a mixture including soft magnetic powder and an organic...
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7161551 |
Antenna and wristwatch
An antenna has: a core; a coil which is wound on the core; and a magnetic body layer to cover both end portions of the coil and a peripheral portion of the core other than a portion of the core on...
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7154447 |
Nanocrystalline core antenna for EAS and RFID applications
A nanocrystalline core antenna for use in electronic article surveillance (EAS) and radio frequency identification (RFID) systems. The nanocrystalline antenna is constructed from nanocrystalline...
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7126550 |
Clasp for bracelet incorporating an antenna and bracelet including the same
There is disclosed a clasp for electrically connecting first ( 10 ) and second ( 10 ′) antenna elements respectively housed in first ( 50 ) and second ( 50 ′) strands of a wristband of a...
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7126548 |
Electronic device and antenna apparatus
In an electronic device having a metal device case, and an antenna disposed inside the device case, a magnetic member having a magnetic permeability higher than a magnetic permeability of the...
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7123206 |
System and method for multiple antennas having a single core
A system and method for multiple antennas on a single core. The system may include a first core, a first winding wound about the first core for transmitting/receiving electromagnetic signals, and a...
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7109934 |
Rectifier utilizing a grounded antenna
A rectifier generates a rectified output and a dc power output. The rectifier has an antenna element, a tuning capacitor, a coupling capacitor, first and second rectifying diodes, and a storage...
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7106266 |
Tuned antenna ID reader
A multi-coil antenna array constructed with a tuned transformer to null mutual inductance. First and second antenna coil halves are displaced longitudinally on opposite sides of a pathway along...
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7098858 |
Ruggedized multi-layer printed circuit board based downhole antenna
The specification discloses a printed circuit board (PCB) based ferrite core antenna. The traces of PCBs form the windings for the antenna, and various layers of the PCB hold a ferrite core for the...
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7095381 |
Antenna coil
An antenna coil includes a bar-shaped core, a bobbin, a coil, a case, and a wiring harness. The bobbin is formed of insulating material and has the coil wound around the bobbin with the bar-shaped...
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7088304 |
Antenna coil, and RFID-use tag using it, transponder-use antenna
An antenna coil includes an air-core coil wound helically in a plane and a plate magnetic core member inserted in the air-core coil to be approximately parallel with a plane of the air-core coil....
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7088249 |
Housing structure for RFID tag, installation structure for RFID tag, and communication using such RFID tag
A first object of the present invention resides in providing a novel installation structure for an RFID tag, which effectively protects the RFID tag from external stress or impact during the...
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7084825 |
Antenna and electronic device using the same
An antenna capable of attaining the miniaturization thereof and the widening of a band in use, and an electronic device containing this antenna therein, having a miniaturized structure and...
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7084826 |
Low cost inductor devices manufactured from conductive loaded resin-based materials
Inductors and inductive devices are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a...
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7081864 |
Antenna coil and transmission antenna
In a transmission antenna provided with an antenna coil outfitted with a core whereon a coil is mounted by winding, and with a capacitor connected to the aforementioned coil forming a serial...
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7070101 |
Loop antenna and contactless IC card read/write apparatus
To provide a loop antenna capable of attenuating the distant electric field with the attenuation of the magnetic flux in the vicinity of an electromagnetic wave restrained, and a contactless IC...
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7061434 |
Surface mount type chip antenna and communication equipment mounted therewith
According to the present invention, a surface mount type chip antenna comprises a base made of a dielectric, magnetic substance or mixture thereof, at least one terminal portion provided on the...
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7061439 |
Antenna, watch provided with the antenna, and method of manufacturing the antenna
An antenna includes an elongate laminated core, a core case having an electrical insulating property and housing the core, and a coil wound around the core between both end portions of the core...
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7053854 |
Device for shielding a transponder, method for producing a corresponding shielding and transponder provided with said shielding
A unit for shielding a transponder includes at least a chip and an antenna structure with application-specific spatial dimensions and which is secured to an electrically conductive surface. The...
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7042411 |
Triaxial antenna coil
A triaxial antenna coil prevents wires from snapping, increases productivity, is resilient against dropping, and is suitable for being made small and light. A triaxial antenna coil includes coils,...
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7034756 |
Antenna coil device
In an antenna coil device 11 , a coil portion 12 having a lead wire 2 wound around a magnetic core 1 is mounted on a case 3 made of plastic resin, and on one side of the case 3 , terminal...
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7034767 |
Helical coil, Magnetic core antenna
A device by an antenna ( 1 ) where the coil conductor ( 2 ) of the antenna is wound around a ferrite rod/tube ( 4 ), and where one conductor ( 12 ) of a connecting cable ( 10 ) is electrically...
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7023395 |
Antenna and communication system using the same
An antenna includes a first core made of magnetic material, a coil including a conductive wire wound around a predetermined region of the first core, and a second core made of magnetic material....
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7015873 |
Thermally dissipating high RF power radiating antenna system
A high power radiating antenna system is disclosed which includes a ground plane and an electrically conductive power radiating element. The power radiating element includes a first, power feed end...
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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,...
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6987490 |
Antenna and method for manufacturing the same
An antenna having: a core material which is formed by laminating a plurality of thin plates made of a magnetic material, both end portions of the core material being widened in a thickness...
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6980171 |
Antenna and manufacturing method for the same
An antenna is comprised of a core portion laminated by a magnetic ribbon through a deformable member and a coil portion wound around the core portion.
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6965352 |
Antenna device for vehicles and vehicle antenna system and communication system using the antenna device
An antenna device for installation on vehicles, which antenna device including a core made of a magnetic material, a holding portion provided by a dielectric film sheet wound around the core, a...
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6940461 |
Remote access device having multiple inductive coil antenna
A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second...
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6930646 |
Transponder and antenna
An antenna for a transponder comprises a magnetic core composed of layered amorphous metallic thin plates or composite plates of soft magnetic flakes and a synthetic resin, and a coil wound on the...
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6927739 |
Antenna and wristwatch equipped with antenna
The antenna main body having the conductor wound around thereon and the radio wave receiving parts for receiving the radio waves are formed independently, the area of the radio wave receiving...
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6924767 |
Reception antenna, core, and portable device
A reception antenna is formed of a column-profiled ferrite core and three antenna coils, each of which is formed by winding electric wire around the core. Each central axis of the three antenna...
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6919856 |
Ferrite antenna
The invention relates to a ferrite antenna, comprising at least one winding ( 4 ), which is arranged around a core ( 2 ) consisting of ferrite material. A second core ( 3 ), consisting of ferrite...
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6897827 |
Installation structure for RFID tag, method for installing RFID tag, and communication using such RFID tag
An RFID tag installing structure for installing a microminiaturized RFID tag having a cylindrical antenna coil to a conductive member, an RFID installing method, and communication method are...
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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...
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6873302 |
Signal detection antenna
According to one embodiment of the invention, a signal receiving apparatus is provided. The signal receiving apparatus includes a body. The signal receiving apparatus also includes at least one...
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6867745 |
AM antenna noise reducing
An AM radio antenna circuit having a ferrite bar loop antenna comprises a resonating structure forming a balanced antenna circuit, a varactor diode tuning structure presenting a controllable...
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6844727 |
Method and apparatus of reducing ringing in a nuclear magnetic resonance probe
The present invention provides a novel use of a material having a high internal magnetostrictive damping and/ or using material with explicitly low magnetostriction as a NMR probe core material....
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6791505 |
METHOD FOR INCREASING EFFECTIVE HEIGHT OF A COMPACT ANTENNA ASSEMBLY, METHOD FOR ENSURING DIRECTIONAL EFFECT OF THE COMPACT ANTENNA ASSEMBLY AND COMPACT ANTENNA ASSEMBLIES FOR CARRYING OUT SAID METHODS
A radio technology can be used for developing compact antenna assemblies for various uses. The compact antenna assembly includes and oscillatory circuit including a reactive component ( 8 ) and an...
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6731246 |
Efficient loop antenna of reduced diameter
The invention concerns an efficient loop antenna of reduced size. The antenna is formed on a dielectric substrate disposed on a conductive ground plane. The substrate has a plurality of regions of...
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6644555 |
Chip card comprising an antenna
The invention concerns an RF-type contactless chip card, comprising a sensor coil ( 1 ), an electronic circuit ( 2 ) connected to the coil and an antenna ( 3 ) made form a material with high...
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6636728 |
Portable multi-antenna signal receiver
A portable receiver comprised of several antennas that are connected to a receiver unit for receiving a signal transmitted by an electromagnetic induction process. The antennas are made in the form...
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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...
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6577284 |
Component field antenna for induction borehole logging
An antenna, and method for forming the same, is provided that receives or transmits three (3) components of low frequency magnetic fields while having physical dimensions that can be easily housed...
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6538617 |
Two-axis, single output magnetic field sensing antenna
A passive, non-multiplexed, two-axis antenna for sensing time-varying magnetic fields of a particular carrier frequency at a second point in space as produced by a electromagnetic field generator...
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6538616 |
Cubic antenna
The present invention is an antenna with a cubic core. A first conductor is wound around the core's first axis. A first dielectric layer is placed around the first conductor. A first electrical...
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6529169 |
Twin coil antenna
A ferrite core antenna having two spaced signal pick-up coils coupled through a transformer so that the signals from the two coils are additively combined in the primary of the transformer. A...
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6491229 |
Contactless chip card associated with RF transmission means
The invention concerns a chip card associated with RF transmission means. Said chip card comprises on each surface high permeability zones arranged so as to concentrate the flux generated by the RF...
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6492956 |
RF current injecting antenna device
An apparatus for, and method of, replacing conventional antennas which transmit radio frequency energy from radio frequency transmitters. The invention provides for the use of any conductive...
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