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Patent Searching and Data


Matches 801 - 850 out of 2,827

Document Document Title
JP3764358B2
To provide a method of evaluating an electromagnetic wave transmission structure which enables the analysis of the electromagnetic condition in a scale of the body of an aircraft, taking electromagnetic wave characteristics of a heteroge...  
JP3764885B2
To provide a mobile type positioning system receiver which enhances an S/N ratio of a radio wave from a positioning system satellite, and keeps high positioning operation performance by a positioning system, in a positioning system recei...  
JP2006013901A
To provide an antenna with directivity, and at the same time, improve shield effect.An antenna 106 for external radio communication is installed in a circuit board 104 which is mounted in a 1st cabinet part 101, and at the same time, cir...  
JP3756791B2
To easily and adequately realize a circular polarization radio reflective attenuator for suppressing the reflection of circular polarization radio waves. The method of designing a circular polarization radio reflective attenuator (radio ...  
JP2006005365A
To provide a magnetic shielding sheet for a tag that can concentrate a magnetic field and make a try pass without causing the loss of magnetic energy, and to provide a tag that uses it.A magnetic shield sheet 10 is composed of a shieldin...  
JP2006005765A
To provide a means capable of avoiding the problem caising when a radio wave obstacle exists in a straight line path for transmission and reception of radio wave signals and suppressing or preventing the occurrence of interference.This r...  
JP2005538629A  
JP2005347524A
To reduce the influence on the evaluation of temperature characteristics caused by an electromagnetic wave radiated or received from an object to be tested, by making it possible to constantly hold the ambient temperature of the object t...  
JP2005340730A
To provide a radio-wave absorbing body wherein it has a light weight and a low cost, and its good radio-wave absorbing characteristic beginning from a low frequency is obtained in spite of its short length, and further, it has no charact...  
JP2005340318A
To provide an electromagnetic wave absorber which has a high electromagnetic wave absorbing property with respect to unwanted electromagnetic waves in a microwave band and can be easily given a three-dimensional profile and has excellent...  
JP2005331512A
To easily and appropriately evaluate a circular-polarized radio wave reflection attenuator for reducing radio wave reflection of a circular-polarized wave.This evaluation method for a circular-polarized radio wave reflection attenuator i...  
JP2005333125A
To provide a radio wave absorber and its manufacturing method, which can absorb radio wave in a wide band, and which is lightweight, has flame retardance, and is durable in outdoor use.A radio wave absorbing layer 3 is comprised of a com...  
JP2005323380A
To provide a simple configuration which restrains unwanted electric waves, without major changes in the characteristics caused by the incident direction or the polarization status of the electric waves.Electric wave attenuating object 40...  
JP2005317825A
To provide an electromagnetic wave absorber having an excellent electromagnetic wave absorbing characteristic.The electromagnetic wave absorber comprises a boron carbide powder having an electrical conductivity of not less than 5×10-6 (...  
JP2005317945A
To provide an electromagnetic wave absorber which efficiently absorbs electromagnetic waves over a broad band.A first conductive element 12 in a first conductive element layer 5 has cross-shaped holes 30 and square holes 31. Square holes...  
JP2005311330A
To provide a radio wave absorber good in weather resistance, bending workability, productivity, etc.The transparent radio wave absorber comprises a transparent dielectric layer 1 between a transparent resistance film 3 containing very th...  
JP3736668B2
To efficiency mass-produce a radio wave absorber with excellent waterproofness only by simply fixing radio wave absorbing sticks to a frame body by continuously producing the radio wave absorbing stick through drawing molding. A glass fi...  
JP2005312049A
To provide a horn antenna which presents superior performance, by indicating a superior radiation pattern over wider operating frequency bands.There are provided ridges 210 arranged symmetrically with each other with a longitudinal axis ...  
JP2005286195A
To provide an extrudable crosslinked grease-like electromagnetic wave absorber that is excellent in electromagnetic wave absorbability, thermal conductivity, and flame retardant, is reduced in temperature dependency, and can be applied t...  
JP2005277373A
To provide a radio wave absorber which has a reflection attenuating ability capable of preventing a communication trouble due to reflection of a electromagnetic wave etc., can be thinned and lightened, and has a wide band attenuation cha...  
JP2005259776A
To provide a transmission type double-sided radio wave absorbing device that passes and absorbs radio waves from both directions.The transmission type double-sided radio wave absorbing device is constituted of a left radio wave absorber ...  
JP3722391B2
To obtain a composite magnetic body and an electromagnetic interference suppresser effective for suppressing electromagnetic interference in high-frequency electronic apparatuses such as movable communication apparatuses. A composite mag...  
JP3720581B2
To obtain the sensitivity of a horizontally polarized wave component of a circularly polarized wave at a low elevation angel by arranging plural planar radiating elements under the ground conductor plate of a microstrip planar antenna (M...  
JP2005252080A
To provide a compact, thin wave absorber that does not employ heavy metal for materials of the wave absorber layer and makes effective use of carbon nanotube structure properties to absorb a wide band of radiowaves, and to provide a meth...  
JP2005249659A
To reduce leak-in and turn-in of transmission electric power from a transmission antenna into a reception antenna.A sheetlike electromagnetic wave absorbing body 8 with one face coated with a metal layer 7 is provided to partition an are...  
JP2005251918A
To provide a compact and lightweight electromagnetic wave noise suppressor which facilitates an incorporated application into an electronic apparatus or an electronic part, and has a good electromagnetic wave noise suppression performanc...  
JP3716940B2
PURPOSE: To obtain a measuring apparatus for an electromagnetic wave absorption characteristic which can be constructed to be small in size. CONSTITUTION: A measuring apparatus for an electromagnetic wave absorption characteristic design...  
JP2005244043A
To provide a radio wave absorber having reflection attenuating capability for preventing any communication failure due to the reflection of an electromagnetic wave or the like, which can be made small in thickness and light in weight.Thi...  
JP2005526437A  
JP2005231931A
To provide a cement type radio wave absorber showing an absorption property stable in a high-frequency band of 1 GHz or higher, having workability with fluidity, and the like, and a strength and a radio wave absorption property together,...  
JP3712256B2
To provide a panel for radio wave absorption which can effectively exhibit absorbing performance of radio waves both in a VHF band and in a UHF band which a ferrite tile has. In the panel for radio wave absorption which is to be fixed to...  
JP2005225242A
To develop a vehicle capable of securing proper communication condition in a state that a communication device is installed in the vicinity of a part, a device, or the like having influence on a communication wave.In the vehicle 10, a st...  
JP2005212745A
To provide a molded product for use in a radar device beam passage with less electric wave permeation loss, enhancing hardness and wear-resistance property and exhibiting brilliant color.The molded product for use in the radar device bea...  
JP2005191982A
To more easily produce (mass-produce) an antenna which collects radiowaves to a focal part or radiates the radiowaves in predetermined directions, even when wavelength of the radiowaves is short.A hologram 10 (such as alternating arrange...  
JP3695591B2
To reduce the influence of electromagnetic waves to human body and increase antenna efficiency while maintaining lightweight and compactness of a portable telephone. A dielectric sheet 15 is installed in the chassis internal wall of a po...  
JP2005184012A
To provide a thin electromagnetic wave absorber which absorbs electromagnetic waves at a single or a plurality of desired frequencies.The electromagnetic wave absorber has such a structure that an outside pattern layer 5 having a conduct...  
JP2005142298A
To obtain a desired resonance effect.An element pattern 2 constitutes a conductive pattern of a frequency selecting board which reflects or penetrates only a radio wave of specific frequency. The shape of this element pattern 2 is config...  
JP2005142578A
To provide a method of absorbing an electromagnetic wave employing a solar battery capable of vanishing reflection of the electromagnetic waves from a solar battery without interfering with a solar photovoltaic power generation.Each of t...  
JP2005142748A
To reuse a manufactured frequency selection board.Provided is a stage of adding, to respective element patterns 11, new conduction parts 11a which is electrically connected to the element patterns 11 of a frequency selection board 10 to ...  
JP2005124043A
To reduce local electromagnetic wave ratio absorption ratio (SAR) in a portable radio communication terminal.The portable communication terminal is provided with a conductive member 22 arranged around a display 20 and grounded by a groun...  
JP2005122595A
To reduce the effect of a metal plate or the like up to a degree on which a proximate non-contact communication distance is not shortened.The proximate non-contact communication apparatus having a proximate non-contact communication func...  
JP2005117033A
To provide a simply structured radio absorbing material capable of changing a matching frequency characteristics and concurrently improving the matching characteristics.The radio absorbing material is composed by arranging holes 3 in a c...  
JP2005109596A
To solve a problem that at least one arrival angle detection antenna is required to be installed, a plurality of antennas including a communication antenna must be installed with high precision for the purpose of communication and positi...  
JP2005094537A
To suppress the radiation of leakage radio waves in an antenna device used to a radar or radio communication by solving the problem that a conventional antenna device is disabled to sufficiently suppress leakage radio waves that are radi...  
JP2005086115A
To provide an electromagnetic wave absorber having excellent electromagnetic wave absorption characteristics.The electromagnetic wave absorber comprises boron carbide powder whose conductivity is not less than 5×10-6(S/cm). The electrom...  
JP2005086528A
To obtain an interference wave shielding structure for a radio wave receiving antenna for preventing an interference between a reception desired radio wave and an undesired electromagnetic interference wave by preventing the undesired el...  
JP2005086507A
To dispense with a radio access point for each building and distance adjustment between terminals and to surely prevent positional deviations between radio antennas of radio access points and between terminals arranged facing the radio a...  
JP2005080023A
To provide a magnetic core member configured so as to be able to simultaneously satisfy the improvement of a communication characteristic of an antenna coil and sufficient electromagnetic shielding action from a shield plate, an antenna ...  
JP3654919B2
PURPOSE: To provide an electromagnetic shield, a shielding panel, a shielding inlet/outlet structure, a shield through structure, and a shielding room by avoiding the problems of magnetic saturation and stress of a ferromagnetic body to ...  
JP3627901B2  

Matches 801 - 850 out of 2,827