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JP4194735B2 |
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JP4189697B2 |
A reflecting material for antennas containing a three-axis woven fabric usable for high frequency band ranging from 20 to 60 ÄGHzÜ. A reflecting material (1) for high-frequency band is fabricated by adjusting the weave density n, volum...
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JP4185453B2 |
A method of integrating a thin antenna module into a vehicle is disclosed. The thin antenna module comprises a high impedance surface with at least one antenna element disposed thereon. The method includes the steps of inserting the thin...
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JP2008541616A |
A radio frequency identification ("RFID") tags that are useful on metal or other conductive surface and to methods for manufacturing the same. In one embodiment, the radio frequency identification tag includes: a substrate including a fi...
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JP2008541499A |
An antenna includes a substrate, and an array of dipole antenna elements on the substrate. Each dipole antenna element includes a medial feed portion and a pair of legs extending outwardly therefrom. Adjacent legs of adjacent dipole ante...
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JP4183678B2 |
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JP4181173B2 |
A multibeam antenna includes: a photonic bandgap material ( 20 ) having at least one band gap; at least one periodicity defect so as to produce at least one narrow bandwidth inside the at least one band gap of the photonic bandgap materi...
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JP4181172B2 |
A system includes a device for focusing electromagnetic waves, and a multiple-beam antenna. The antenna includes: a photonic bandgap material ( 20 ) having at least one band gap, at least one periodicity defect ( 36 ) of the photonic ban...
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JP2008271319A |
To obtain a membrane reflector which is capable of suppressing reduction in mirror plane precision of a dish, with respect to a rapid temperature change, while preventing a weight from being considerably increased.A membrane reflector 1 ...
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JP2008271003A |
To provide a radio-wave lens antenna device, in which when adding a primary radiator or adjusting the position of the primary radiator, its position adjusting can be performed readily and surely, without displacing the primary radiator w...
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JP4176802B2 |
A transition circuit includes: a waveguide having a notched portion formed by cutting away a portion of the tube wall of the waveguide from the end portion of the waveguide; a dielectric substrate in which a portion extending outside the...
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JP4176019B2 |
A method of making a frequency selective surface in an electromagnetic energy attenuating coating having an electrical resistance, including the steps of defining a first marking field and a first marking tolerance; defining a second mar...
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JP4177376B2 |
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JP4174507B2 |
A frequency multiband antenna includes a photonic bandgap material having at least one band gap, one single periodicity defect of the bandgap material so as to produce several narrow bandwidths within the at least one band gap of the ban...
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JP2008256717A |
To provide an easily and inexpensively realizable multi-beam automobile radar system for reducing an electric power loss.The multi-beam automobile radar system has an antenna 20 consisting of power supply parts 201-203 and a focusing mea...
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JP4170554B2 |
To improve a non-contact information reader by miniaturizing an antenna for transmitting/receiving for reading (or reading and writing) information from a non-contact information storage device. A transmitting/receiving integrated antenn...
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JP4167784B2 |
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JP4160928B2 |
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JP4160994B2 |
An electrically conductive coating of an automotive heatable windshield has a communication window having an enhanced frequency selective surface having arranged passing areas (uncoated areas) and blocking areas (coated areas) to pass an...
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JP4163109B2 |
An antenna and antenna excitation method. The inventive antenna includes a cylindrical array (20) of radiating elements. Each of the elements is mounted at a predetermined substantially transverse angle relative to a longitudinal axis. A...
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JP4164055B2 |
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JP4162859B2 |
A structure which exhibits magnetic properties when it receives electromagnetic radiation is formed from an array of capacitive elements each of which is smaller, and preferably much smaller, than the wavelength of the radiation. Each ca...
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JP2008236769A |
To provide a lens antenna apparatus suitable for mounting on a mobile in which multibeam is realized with a simple and stable structure.A guide rail 130 is laid in parallel along the circumferential surface of the hemispherical lens 120 ...
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JP2008236791A |
To accomplish a function capable of communicating with a satellite and/or a terrestrial system and a function capable of receiving radio frequency signals having circularly polarized waves and/or linearly and vertically polarized waves.T...
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JP4156704B2 |
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JP4157135B2 |
The present invention relates to techniques to excite a circularly polarized antenna and, more particularly, to a circularly polarized antenna having a QUAD-EMC unit structure. It comprises plural polarized antenna elements; a signal dis...
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JP4157057B2 |
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JP4153190B2 |
An antenna system is provided with an antenna panel 1 which has fine bumps and dips 4 formed on a mirror surface side, which is one of surfaces opposing to each other, by etching, wherein the fine bumps and dips scatter sunlight entering...
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JP4152645B2 |
A wire grid polarizer (300) for polarizing an incident light beam (130) comprises a substrate having a first surface. A grid or array of parallel, elongated, composite wires (310) is disposed on the first surface (307), and each of the a...
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JP2008211268A |
To provide a parabolic shape using circular films with a film thickness distribution which can be manufactured practically.A reflector comprises two circular films and an annular support. A first film has constant rigidity, up to a dimen...
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JPWO2006103761A1 |
The signal processing circuit board 2 is equipped with a signal processing circuit that detects and processes radio waves received by the radar 1 using a threshold value. The housing 3 has an electrical opening 33 at a position correspon...
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JP2008536394A |
A decoherence plate provides reduced field coupling or improved isolation between two or more antennas. An antenna module includes a first antenna, a second antenna and a decoherence plate having a surface. The first antenna transmits on...
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JP2008536366A |
A Frequency Selective Surface (FSS) for the filtering of a frequency band and its design method are provided. The inventive FSS comprises a dielectric layer and a plurality of unit cells. The plurality of the unit cells are periodically ...
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JP4142599B2 |
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JP4138706B2 |
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JP4141122B2 |
In an inflatable structure provided with an array antenna or the like, a membrane of a multi-layer inflatable structure is provided with an airtight layer for forming an airtight space inside and a rigidizing layer provided outside the a...
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JP3144173U |
The present invention relates to a partially reflective surface antenna and, more particularly, to a partially reflective surface antenna including a reflective board composed of arrays of microstrip antennas, and has advantages of low s...
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JP4136178B2 |
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JP4134206B2 |
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JP4137353B2 |
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JP2008187628A |
To provide an expansion antenna which is available as an earth station antenna for satellite communication by suppressing a side lobe.A mesh expansion antenna 1 comprises: a main reflecting mirror unit 10; an opening/closing mechanism 20...
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JP2008186680A |
To provide a manufacturing method capable of manufacturing a cylindrical, columnar and tabular resin dielectric which is reduced in cost and is excellent in dielectric characteristic, using a resin material mixing a dielectric ceramic po...
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JP2008530914A |
A predictive collision radar system in a vehicle incorporates a first antenna and a guard antenna, the associated radiation patterns of which overlap with one another, but the radiation pattern of the guard antenna is broader than that o...
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JP4130459B2 |
A bottom reflector (15) for a radar-based level gauge (11), which measures a level (71) of a liquid stored in a tank (12) by means of transmitting a microwave signal towards the surface of the liquid from the top of the tank, receiving t...
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JP4125984B2 |
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JP2008527939A |
A device for emitting and receiving electromagnetic radiation, in particular microwave radiation, including at least one feed element, at least one hollow conductor and at least one rod radiator, the feed element being situated on a firs...
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JP4121483B2 |
Disclosed herein is an antenna beam control apparatus for steering a horizontal azimuth angle or horizontal beam width of base transceiver station antennas. The apparatus comprises at least one antenna reflection plate, rotation means fo...
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JP4124245B2 |
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JP4118449B2 |
The lower auxilliary layer conductor structure (4) is decoupled from the resonant structure for all signals near resonance thus avoding capacitive coupling.
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JP4119352B2 |
In a lens antenna apparatus, a guide rail (130) is formed along the outer surface of a hemispherical lens (120) of a hemispherical lens antenna (100), and a plurality of radiators (140,150,160) are positioned and fixed on the guide rail ...
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