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JP4843467B2 |
To provide a high surface impedance structure which contributes to the thickness reduction of an antenna unit and an RFID tag. A capacity upper electrode 21 is formed on the top surface side of a dielectric layer 10. A ground electrode 3...
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JP4835653B2 |
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JP4835670B2 |
An antenna device has a divider producing first and second signals, and amplifiers amplifying the signals at a changeable amplitude ratio of the first signal to the second signal. A Rotman lens gives first phase differences to first high...
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JP4824701B2 |
An apparatus comprises a first and a second input connection for a first (D1) and a second (D2) data stream, and a first and a second polarization former, one for each of said data streams. The apparatus further comprises a first and a s...
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JP4820807B2 |
To provide a radio relay apparatus easy to handle a manhole lid and easy to design and install without requiring to apply complicated processing such as making a hole in the manhole lid. This radio relay apparatus installed in the back o...
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JP4814842B2 |
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JP4815574B2 |
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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JP4812120B2 |
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JP4813727B2 |
A motor-vehicle radar system provided with at least one housing includes at least one send/receive element for sending and/or receiving electromagnetic waves, at least one first dielectric member in the beam path of the electromagnetic w...
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JP4812824B2 |
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JP4812119B2 |
To provide a radio wave shutter capable of controlling intrusion of radio waves of a frequency or a frequency band to the interior of a room equipped with an anechoic chamber facility. The radio wave shutter adopts a plurality of basic u...
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JP4813726B2 |
The invention relates to an automotive radar system that comprises at least one element transparent for a sensor radiation for focusing the sensor radiation and/or at least one radome which is not prefocused in the beam path. At least on...
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JP2011217190A |
To provide a directional antenna particularly optimal for receiving radio waves of UHF bands, the directional antenna being configured to transmit and receive radio waves.A directional antenna has: an H-shaped slit including a fundamenta...
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JP2011217028A |
To provide a thin antenna substrate for regularly reflecting radio waves over a wide bandwidth, and also to provide a thin RFID tag communicable with a wide bandwidth regardless of presence of an adjacent metal body.This antenna substrat...
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JP4798448B2 |
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JP4794539B2 |
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JP4795344B2 |
One exemplary metamaterial is formed from a plurality of individual unit cells, at least a portion of which have a different permeability than others. The plurality of individual unit cells are arranged to provide a metamaterial having a...
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JP2011199494A |
To obtain stable reception characteristics, and to improve the positioning accuracy of an own position.A GPS antenna 10 is provided with a reflective conductor 16, thereby an electromagnetic wave radiated from an antenna conductor 14 in ...
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JP2011193345A |
To provide an electromagnetic wave reflection plane in the simplified structure to change reflecting direction of the electromagnetic wave to the desired direction.The electromagnetic wave reflection plane includes a substrate 1, a groun...
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JP4782097B2 |
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JP4778701B2 |
The high frequency, multiple beam antenna system comprises a focusing device having a profile of revolution created by the cross section of a dielectric lens (2) rotating about an axis (1) located in its plane and radiating elements with...
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JP4771963B2 |
To provide an antenna design technique which optimizes an antenna shape parameter based on an evaluation value obtained by executing a directivity calculation step, a dispersion calculation step and an evaluation value calculation step s...
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JP2011172149A |
To solve such a problem that a radiation pattern shape of an auxiliary antenna becomes irregular owing to coupling from a main antenna to the auxiliary antenna and operation characteristics of the antenna is deteriorated.A mushroom struc...
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JP4762944B2 |
In a terahertz antenna module 1, a photoconductive antenna element 17 is fixed to a wiring board 9, and electrically connected to an electric signal input/output pin 24 of an electric signal input/output port 23 via a signal electrode of...
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JP2011166611A |
To change a branching direction, in particular, in accordance with the installed position of a millimeter wave radio receiver by enabling a millimeter wave radio signal from one millimeter wave radio transmitter to be received by a plura...
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JP4753974B2 |
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JP4757169B2 |
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JP2011160425A |
To provide an antenna reflector small in diameter in storage.The antenna reflector 100 includes a centrally-located hub 120, inner ribs 108 rotatable at a proximal end of the hub, outer ribs 110 extensible from the inner ribs, and a guid...
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JPWO2009131140A1 |
The electromagnetic band gap EBG structure consists of a rigid substrate, a first conductor plane provided on the rigid substrate, a dielectric layer provided on the first conductor plane, and two dimensions on the dielectric layer. A pl...
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JP4746090B2 |
A planar multi-layer transreflector for generating collimated coherent energy comprises one or more of insulating layers between two or more metallic layers. The transreflector substantially reflects a cross-polarized component of an inc...
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JP2011146994A |
To provide a communication apparatus which can be compact.In a module 10, dielectric layers 12A, 12B are provided above and below a substrate 11, an antenna 13 and a frequency converting section 14 for converting a signal transmitted fro...
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JPWO2009123132A1 |
At least in an antenna including a radiator and a reflector, the radiator and the reflector are arranged along the arrival direction of the radio wave received by the antenna, and the reflector is arranged in the polarization direction o...
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JP4726972B2 |
A radome and a microstrip patch antenna having the same are disclosed. The gain value of the microstrip patch antenna having the disclosed radome can be increased while the size thereof remains in a limited size. The disclosed radome com...
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JP4728930B2 |
A corner reflector antenna includes a ground plate having a main surface, a reflector including a rectangular first metal plate and a rectangular second metal plate which are perpendicularly provided on the main surface of the ground pla...
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JP4727884B2 |
The high directivity antenna has a transmitter patch (10) with a rear reflector (30a), and a set of elements (22) of differential permittivity and permeability. The elements pass one or several frequencies within a frequency band gap.
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JP4725885B2 |
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JP2011519251A |
The antenna may include a planar reflector having a plurality of loop electrical conductors defining an array of parasitically drivable antenna elements, and a circularly polarized antenna feed spaced from the planar reflector to parasit...
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JP4714417B2 |
The high directivity antenna has a transmitter patch (10) with a rear reflector (30a), and a set of elements (22) of differential permittivity and permeability. The elements pass one or several frequencies within a frequency band gap.
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JP4713823B2 |
An antenna unit (50) formed in the shape of a hollow box comprises a substrate forming the front side of the antenna unit, a microstrip antenna array (51) formed on the substrate, a ground plane forming the rear side of the antenna unit,...
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JP2011124867A |
To obtain a multi-beam antenna in which all element antennas can be connected by a small number of multi port amplifiers, by fixing output power of each multi-port amplifier.The multi-beam antenna includes: a beam forming circuit 10 whic...
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JP4708470B2 |
A millimeter wave transceiving system 100 for transmitting and receiving a millimeter wave includes a transmitting apparatus 1 for transmitting a millimeter wave, a reflecting plate 41 for reflecting a millimeter wave transmitted from th...
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JP4705976B2 |
An antenna apparatus is disclosed. The antenna apparatus includes a board and a line antenna. The board includes: a base part having dielectric layers and a conductive layer disposed between the dielectric layers; multiple metal plates a...
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JP4702747B2 |
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JP4696241B2 |
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JP2011102217A |
To provide a heat ray reflecting glass plate capable of suppressing distortion upon bending while maintaining transmission characteristics for electromagnetic waves, and to provide a method for bending the heat ray reflecting glass plate...
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JP2011103703A |
To reduce the size of an RFID tag that is usable even if it is attached to a metal surface.A first pattern 1 includes a pair of conductors each having a folded portion. One end portion of each of the pair of conductors is defined as an e...
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JP2011097350A |
To provide an antenna device for vehicle that increases a gain of an antenna when UHF radio wave is emitted.The antenna device for vehicle includes a dipole antenna 50 provided inside a door handle of the vehicle, and radiates the UHF ra...
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JP2011096248A |
To provide an RFID-based reader which allows short-distance recognition, while minimizing recognition malfunctions in the recognition of an RFID tag by a UHF-band RFID reader.The RFID reader 100 includes a gate frame 101 set on both side...
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JP4681614B2 |
A linearly polarized antenna includes a dielectric substrate, a ground conductor which is overlapped on one surface of the dielectric substrate, an antenna element made of linearly polarized, which is formed on an opposite surface of the...
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JP2011082630A |
To provide a wideband antenna.The directional antenna includes a power feeding element for transmitting and receiving electric waves, and a reflection element that opposes the power feeding element and is disposed at an interval D backwa...
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