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JP2012151567A |
To provide a corner reflector antenna capable of reducing a construction cost of a steel tower by realizing a wider band of VSWR characteristics, for sharing a plurality of systems using a single kind of antenna.A power feeding part 13 a...
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JP4995174B2 |
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JP2012144218A |
To provide a window glass for automobile having the infrared ray shielding performance while the infrared communication of an on-vehicle instrument built in a rearview mirror is available.The window glass includes an electromagnetic wave...
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JP2012146945A |
To provide an artificial magnetic body capable of generating the characteristics substantially equivalent to the gyro magnetic characteristics of ferrite for electromagnetic waves such as microwaves without the need for an external magne...
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JP4989662B2 |
To appropriately ensure a desired communication distance even when antenna size is restricted. In an RF tag reader/writer 1, the lengthwise dimension of a ground layer 8 in a multilayer substrate 5 is set to a 1/2 wavelength of the radio...
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JP4991582B2 |
A deflection device includes a tabular object for transmitting or reflecting an electromagnetic wave, a drive unit for driving the tabular object so as to rotate or perform a translation motion, and an electromagnetic wave irradiation un...
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JP4990188B2 |
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JP4990310B2 |
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JP2012517169A |
A device for transmitting and/or receiving electromagnetic RF signals, in particular a UWB antenna, has a planar, ultra-wideband antenna structure made of a plurality of dipole elements. Each dipole element comprises two poles having sub...
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JP4982607B2 |
An antenna having two frequency-selective surfaces is disclosed. The antenna includes a first frequency-selective surface (FSS) having multiple holes to form a mesh, a second FSS having a multiple holes to form a mesh, and a perfect elec...
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JP4986897B2 |
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JP4976533B2 |
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JP4974115B2 |
A radio wave transmission/reception device capable of detecting an obstacle in front of a vehicle using radio waves is disclosed. The device includes a radio wave transmission/reception unit; a radio wave reflection unit installed around...
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JP4970206B2 |
There is provided an antenna apparatus including: a finite ground plane; a plate-like conductive element configured to include a first conductive plate disposed so as to oppose the finite ground plane and a second conductive plate that s...
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JP2012114581A |
To provide a sheet body which allows data read and write through each opening of a conductive member such as a steel pipe to be performed readily when being stuck to an inner wall surface of the conductive member even in a condition wher...
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JP4950104B2 |
To provide a low-loss EBG structure and an antenna device using it, and a wireless tag. A loss of an EBG caused by a via 3 is reduced and a detrimental effect on antenna characteristics is suppressed by dispersing a path wherein a high f...
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JP4949455B2 |
According to one embodiment, a periodic structure includes two types of LC resonance circuits or more. The phases of reflected waves by these two types of LC resonance circuits or more with regard to an incident wave includes a specific ...
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JP4943391B2 |
To provide a radio relay device capable of performing radio communication between a radio device installed in the ground without mediating a manhole cover and one installed on the ground, and capable of raising a radio signal level trans...
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JP4937876B2 |
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JP4939415B2 |
This invention relates to an antenna comprising at least one radiating device, furnished with a rejector filter associated with a frequency band of an interfering signal. In accordance with the invention, such an antenna is characterized...
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JP4933977B2 |
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JP2012090225A |
To provide an interfering radio-wave reflector having a broadened reflection frequency and a reflection angle restricting function.The interfering radio-wave reflector has a stacked structure formed by stacking: a left-handed radio-wave ...
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JP4926907B2 |
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JP4927625B2 |
To provide a magnetic shield sheet capable of passing energy of magnetic field produced by electromagnetic wave of communication frequency without causing loss by concentrating the magnetic field within the sheet surface, to provide a no...
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JP4926959B2 |
A leaky wave antenna contains a first and a second leaky wave antenna structure back to back against each other. Each antenna structure comprises a dielectric body and an elongated wave carrying structure, such as a slot in a conductive ...
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JP4926099B2 |
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JP2012083758A |
To provide a semi-transparent reflector including a multi-layer photonic structure.The semi-transparent reflector includes the multi-layer photonic structure. The multi-layer photonic structure includes a plurality of coating layers made...
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JP4918694B2 |
The antenna has a set of radiating networks (RRi), where each network comprises a radiating pattern sub-assembly for radiating the signal emitted in a specified direction. Charging unit and placing units of the radiating network are prov...
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JP4916468B2 |
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JP4915216B2 |
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JP2012070273A |
To provide a parabola antenna cover preventing snow accretion and water accretion, preventing an attenuated reception radio wave and a disabled radio wave reception state caused by snow accretion, with a remarkable reduction of an initia...
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JP4903471B2 |
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JP4906585B2 |
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JP4901473B2 |
A high-impedance substrate including a first layer made of insulating material, having a lower face and an upper face, the substrate including conductor patterns mechanically linked to the substrate. Some of the conductor patterns mechan...
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JP4894610B2 |
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JP4898348B2 |
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JP2012049767A |
To provide an antenna device which is smaller than conventional antenna devices.An antenna device has a reflector plate 1 and a radiation element disposed on the reflector plate 1. The reflector plate 1 and the radiation element are cove...
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JP2012049654A |
To provide an EBG structure for weight reduction to cope with a problem such that an antenna weight becomes exceedingly large because of a thick dielectric layer corresponding to the wavelength of a use radio wave, when the EBG structure...
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JP4891230B2 |
An expanded polypropylene bead for forming a dielectric material, including a polypropylene resin containing a ceramic in an amount of from 10 to 80 wt %, having an apparent density of from 0.03 to 1.7 g/cm3, having an intrinsic endother...
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JP4889648B2 |
A main object of the present invention is to reliably perform radio communication in an electronic device containing case without spoiling an aesthetic aspect thereof. In order to achieve the object, an electromagnetic shield body is pro...
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JPWO2010038813A1 |
The first spacer 2 has an arrangement surface 2a on which a wireless IC tag is mounted, and an auxiliary antenna 3 that resonates with electromagnetic waves used for wireless communication on the surface opposite to the arrangement surfa...
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JPWO2010038478A1 |
It provides a small and thin electromagnetic bandgap structure that can be surface-mounted or built into a substrate. The electromagnetic bandgap structure according to one aspect of the present invention is a dielectric formed so as to ...
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JP2012039587A |
To provide a thin radio wave scattering body for imparting stealthiness to a radio wave in a wide frequency range or a thin radio wave scattering body having a radio wave absorber at low cost.A surface of a structure comprises a radio wa...
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JP4876941B2 |
To obtain a deployable antenna which has more improved deployment reliability by reducing the number of hinge points of a beam supporting a cable network. A deployment mast supporting a metal mesh forming an antenna reflector and a cable...
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JP4877809B2 |
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JP4865706B2 |
A antenna made from a photonic band-gap (PBG) material, includes: a lateral wall ( 4 ) which is made from a PBG material and which completely surrounds a central axis ( 6 ), the wall being disposed at a distance from the central axis suc...
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JP4862883B2 |
A dielectric block disposed on a substrate so as to cover a radiation patch formed on the substrate has a cylindrical outer shape. A concave portion is provided in a bottom surface (referred to as an opposing bottom surface) of the diele...
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JP4856078B2 |
A reflect antenna element (10) has a receive antenna section (12), a transmit antenna section (14), and a strip transmission line (16) for coupling energy from the receive antenna section to the transmit antenna section and formed by a s...
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JP4853329B2 |
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JP4846558B2 |
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