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Matches 901 - 950 out of 2,723

Document Document Title
JP4953996B2  
JP4951640B2  
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 ...  
JP2012090045A
To provide a multichannel coaxial type rotary joint having a plurality of choke structures whose isolation characteristics have been improved without causing passage characteristics to degrade.In a multichannel coaxial type rotary joint ...  
JP4922003B2
An antenna device is provided. The antenna device includes an antenna element including a first portion and a second portion formed almost parallel to each other, and a plane-shaped piece of magnetic material provided between the first p...  
JP4917484B2  
JP2012508339A
Various components of a shrouded wind turbine are coated with a radar absorbent material. The resulting wind turbine has a reduced radar signature compared to conventional wind turbines.  
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...  
JP4889180B2  
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...  
JP2012039234A
To provide a receiver capable of ensuring high reception quality, capable of inhibiting a dynamic range of a radio signal concurrently incoming from a plurality of points in different directions, incoming from a plurality of directions.A...  
JP4875533B2  
JP2011258745A
To suppress magnetic noise.In an electromagnetic wave leakage suppression structure, a tape 2 is composed of an adhesion layer 11 adhered to a housing 1, a magnetic material layer 12 provided on a surface of the adhesion layer 11, a cond...  
JP4835653B2  
JP4836899B2  
JP2011250031A
To provide a compact antenna device which can be used for short-range radio communication or mobile communication.At the top and bottom of a metal box 15 which is a housing of an antenna device, a lower antenna 12, a spiral antenna for t...  
JP4833571B2  
JP4824621B2  
JP4825074B2  
JP4808572B2  
JP4801380B2  
JP2011211420A
To improve antenna efficiency while securing a broadband characteristic and thinning.A spiral antenna includes an antenna element 11, a cavity 13, and a radio wave absorber 14. The antenna element is formed into a spiral shape on a diele...  
JP2011211309A
To provide an antenna module and an electronic apparatus in each of which the variations in a resonance frequency of an antenna coil due to a metallic component placed in the surrounding are prevented.The antenna module 1 includes the an...  
JP2011211517A
To provide a film antenna that is excellent in antenna performance and durability.The film antenna is configured as follows. A radio-wave absorbing member has at least a dielectric layer and a conductive layer. A base material is formed ...  
JP4796469B2  
JP4795826B2  
JP4790892B2  
JP4793521B2  
JP4784517B2  
JP4784249B2  
JP4782097B2  
JP4761246B2  
JP4761188B2  
JP4757169B2  
JP4752934B2  
JP2011151047A
To provide an electromagnetic wave absorber for shielding electromagnetic waves of a specific frequency reliably by a simple structure.Two or four triangular punched portions 14 having their individual apexes opposed to each other are fo...  
JP4736517B2  
JP2011142198A
To improve absorption characteristics of a radiowave absorber for a radiowave from an oblique direction.The radiowave absorber includes a first film made of a conductor, a second conductor made of a resistor, and a plurality of conductiv...  
JP4715643B2  
JP4714841B2  
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,...  
JP4696241B2  
JP4698528B2
To enable a thinned battery lid with an antenna being mounted on the battery lid in a mobile electronic device, and to enable a thinned device case as a result. In a mobile electronic device having a battery lid 8 attached to a battery s...  
JP4680109B2  
JP2011086652A
To provide: a hollow radiowave absorber constituting a radiowave absorption wall capable of securing a return loss of about -20 dB in a wide frequency band substantially from 30 MHz to 3 GHz; a radiowave absorption wall using the hybrid ...  
JP4677503B1
To easily realize a good shielding effect by adhering to an outer surface, an inner surface, etc. of a case of an electronic device by adopting a shielding material made of a flexible laminated body which can be adhered. Shielding materi...  
JP2011082985A
To provide an electromagnetic filter device that introduces, to an electronic device, a power transmission function using magnetic field coupling at a predetermined frequency without deteriorating transmission characteristics, while ensu...  
JP4660542B2
A radio system for sensing the spatial configuration of a physical object comprising a transmitter (102) which sends a query message to a transponder (104) having at least one antenna (106). A radio frequency shield (108) is moveably int...  
JP2011045036A
To suppress the influence of multipath and to freely arrange a plurality of planar antennas on a substrate.The planar antenna 100 includes a substrate 109, an antenna pattern 103 installed at the center of one surface of the substrate 10...  
JP2011041130A
To solve the problems that, when a metal chip having shock resistance is embedded in a distal end of a radome, antenna radiation characteristics inside the radome may be deteriorated by effects of reflection in the metal chip, an antenna...  

Matches 901 - 950 out of 2,723