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JP4512755B2 |
To simplify the structure, and to promote upsizing by providing a conductive mesh to be rolled for storing around a shaft nearly vertical to a mirror finished surface in the storing condition so as to form an expansion type mesh antenna....
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JP4508941B2 |
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JP3160897U |
To provide a refracting radio telescope capable of increasing and confirming the shape of a radio wave source at the same time as increasing the brightness of the radio wave source. An intermediate image of a carbon-based material object...
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JP2010154078A |
To provide an antenna device including structure of teardrop-shaped elements having directivity. The antenna device includes: the teardrop-shaped element in a geometrically combined shape so that a bottom face side of a conical section a...
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JP2010147510A |
To solve the following problems: it is required that energy characteristics of radio waves from antennas be improved in readers/writers to achieve efficient read (write) control of data stored in RFID tags; and, for example performance c...
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JP4480617B2 |
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JP4469521B2 |
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JP4468183B2 |
The invention provides a system for implementing a high capacity MIMO system with high throughput which will ensure an eigenmode rich channel largely irrespective of the environment. In conventional MIMO systems, the environment can subs...
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JP4463368B2 |
The ground conductor (11), the side conductor (14), and the ceiling conductor (15) surround the antenna element (13), which is connected to the coaxial power supply part arranged on the surface of the ground conductor (11). The ceiling c...
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JP4461974B2 |
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JP4462715B2 |
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JP4450835B2 |
To provide a radar reflector disposed at the center part of the back end of a vehicle in the width direction of the vehicle. The radar reflector includes: a member disposed at the center part of the back end of the vehicle in the width d...
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JP2010081018A |
To provide a wall rear antenna system utilizing radiowaves incident from one surface of a wall or a floor of a building structure and transmitted to a space of another surface.The wall rear antenna system includes: a wall 5: a converging...
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JP2010081520A |
To ensure isolation among a plurality of antennas, when the antennas are arrayed.A radio wave radiator incluldes a first circuit 1 for radiating radio waves of an antenna, a filter, a balun and the like; a second circuit 2 of which the c...
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JP4448475B2 |
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JP4444889B2 |
To provide a microstrip antenna for satellite broadcast reception which is capable of minimizing signal attenuation. The microstrip antenna includes: a dielectric substrate wherein a polarization part for all receiving a circularly polar...
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JP4442380B2 |
A multiple-frequency common antenna has a first substrate sheet and a second substrate sheet respectively structured by an HIP consisting of a metal plate, small metal plates disposed in two dimensions and linear metal bars connecting th...
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JP2010066076A |
To provide a radar apparatus capable of preventing the size of an antenna device from being restricted in comparison with the case of being mounted to a roof of a passenger vehicle and enhancing observation accuracy without having to sep...
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JP4438170B2 |
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JP4440213B2 |
A three-dimensional fractal-structure body partially or entirely comprises a three-dimensional fractal structure, the fractal structure body having a local minimum value at a particular wavelength determined by structural and material fa...
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JP2010062271A |
To provide a shielding device which changes the frequency of an electromagnetic wave to shield without extending an installation space.The shielding device 1 includes: a metal conductor 11; a dielectric 12; a switching part 13; and a con...
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JP4435217B2 |
There is provided with an antenna apparatus, including: a finite ground plate; a plurality of conductor plates arranged along and on both sides of a first gap line or a second gap line that intersect with the first gap line; a plurality ...
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JP4423384B2 |
A transparent sheet, which may particularly be used as a glazing has a radiation-reflective coating and at least one window permeable to high-frequency radiation. The window includes an area devoid of coating. The window is formed within...
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JP4424320B2 |
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JP4418108B2 |
Apparatus for the identification of articles (5) endowed with device for changing the polarization properties of the radiation, comprising a source (1) of non-randomly polarized microwave radiation, and a detector (3) for detecting the c...
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JP4409948B2 |
Radio-frequency transmission device comprising a transmission antenna (2) and a receiving antenna (4), characterized by comprising one or more passive resonant circuits (5) positioned between the transmission and receiving antennas (2, 4).
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JP4407617B2 |
A radio communication system includes: a communication control device; a radio tag for communicating with the communication control device; an antenna for transmitting an incident wave; and a first reflective plate for reflecting the inc...
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JP4405514B2 |
A beam switching antenna method and apparatus for controlling a beam switching antenna system including an antenna element for forming a beam, at least one conductive reflector for reflecting the beam, and a ground switch for applying a ...
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JP4403527B2 |
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JP2010016460A |
To provide a small-sized Yagi type antenna by respectively shortening the length dimensions of a reflector and a radiator.In the antenna, the reflector 6 is disposed roughly in parallel with the radiator 4 at a prescribed distance from t...
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JP4399354B2 |
An apparatus for redirecting radiation including a polarization dependent reflector and an optical component able to transform the polarisation of radiation as it passes through the component. Radiation having a first polarisation compon...
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JP2009296063A |
To enable easy adjustment so that the center direction of a beam may be a predetermined direction when an array antenna is attached on an object such as a vehicle.The array antenna has an antenna conductor in which radiation pieces are d...
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JP4376839B2 |
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JP2009276331A |
To prevent an image from blurring, even when there is out-of-focus state, when imaging an object having a three-dimensional structure, such as an aircraft.An electromagnetic wave of a parallel beam, having strong energy intensity at the ...
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JP4371418B2 |
An antenna reflection structure including a plate, a side wall and a protrusion is disclosed. The side wall is generally perpendicular to the plate and the protrusion respectively. And a concave slot is formed by the side wall, the plate...
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JP4358885B2 |
A compact broadband antenna. The antenna includes a first mechanism for receiving input electromagnetic energy. A second mechanism provides radiated electromagnetic energy upon receipt of the input electromagnetic energy. The radiated el...
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JP2009538034A |
Embodiments of millimeter-wave chip-array reflector antenna system are generally described herein. Other embodiments may be described and claimed. In some embodiments, the millimeter-wave chip-array reflector antenna system includes a mi...
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JP4345719B2 |
An antenna device has semi-conductive antenna bodies each having a predetermined length, which are positioned on a dielectric substrate, and control electrodes that are respectively connected with the semi-conductive antenna bodies. Dire...
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JP4339235B2 |
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JP2009225199A |
To provide an antenna structure which is small in size and effectively transmits a measurement result without being affected by a radiowave absorber.In an antenna portion 10 connected to a tag 10, a metallic reflection plate 22 is provid...
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JP4337877B2 |
An antenna device having a primary radiator that includes a transmission portion formed of a cylindrical waveguide extending in a direction parallel to the frontward direction of the antenna device, and a radiation portion of a rectangul...
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JP2009218968A |
To provide an antenna system, such as, metal-adaptive radio tag that has superior performance even if it is small-sized, and to provide an EBG structure sheet that actualizes the system.Unit cells 220a and 220b of a peripheral part among...
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JP2009211396A |
To manage an object to be carried with a radio IC tag attached thereto without complicating the configuration of the entire system.The radio IC tag system comprises a carrying basket 14 transferred while loading the object 10 to be carri...
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JP4313114B2 |
The invention relates to a deployable antenna reflector comprising a central dish (CD) and a plurality of deployable sheet-like panels (P) arranged around the central dish (CD). The reflector further comprises a central supporting body (...
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JP4308484B2 |
An apparatus includes an object and one or more sensors located adjacent to or in the object. The object is formed of a material whose dielectric constant or magnetic permeability has a negative real part at microwave frequencies. The on...
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JP4298777B2 |
A lens (300, 500) is disclosed for steering the exit direction (Ω) of an incident electromagnetic wave. The lens comprises a main body (210, 510) of a ferroelectric material with a first main surface (207, 507) and a first transformer (...
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JP4300724B2 |
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JP2009159240A |
To provide an antenna incorporated in housing capable of executing sure radio communication only between one prescribed radio IC tag and the antenna when performing bidirectional communication with a radio IC tag inside a housing of a la...
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JP2009159203A |
To provide an antenna with a dielectric lens, which facilitates an adjustment in directivity and is thinned, in an ultra high frequency antenna for millimeter wave radio communication or the like.The antenna with the dielectric lens comp...
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JP4297309B2 |
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