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JP3849786B2 |
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 electro...
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JP2006310353A |
To provide a durable radio wave absorber where the surface resistivity of a resistive film is nearly fixed for a long term, and initially satisfactory radio wave absorption performance can be maintained for a long term.In the radio wave ...
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JP3844317B2 |
To realize improvement in the magnetic efficiency, by joining a pair of half split cores made of soft magnetic powder and a specified organic binder, and causing the joined pair of cores to surround the outer peripheral portion of a cabl...
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JP2006303555A |
To provide a radio wave absorber which can be fixed to a concrete wall face in order to absorb unnecessary radio waves generated around an electronic toll collection system (ETC) on a highway with high attenuation even at a narrow incide...
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JP3839971B2 |
To prevent mechanical properties from being thermally affected greatly and to improve heat resistance, aging resistance, and oil resistance properties by including a soft magnetic material powder and a bonding agent and further including...
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JP2006270350A |
To enable a reader to accurately specify the target ID transmitted from an ID transmission means provided to an inspection target.The shield device is provided with a shield material 5a and a device ID transmission means 6 formed to the ...
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JP2006257762A |
To provide a radio wave and sound absorbing panel with high performance by making compatible sound absorbing performance with radio wave absorbing performance.This radio wave and sound absorbing panel is formed in a laminated structure c...
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JP2006522511A |
The invention relates to a device shielding especially an electronic unit with a transmitter, such as a mobile phone, against electromagnetic radiation. The device includes a crystal and an winding/spiral, where the winding/spiral is wou...
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JP3823942B2 |
To obtain a compact antenna assembly which prevents reflection from the end of a helical antenna element to provide a desired radiation pattern. The antenna assembly comprises a helical antenna for radiating circularly polarized radio wa...
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JP3823293B2 |
To provide a broadband antenna, having a tapered slot antenna structure capable of easily changing the polarized wave faces and making the body small, when it is formed in an array form. Each tapered part 6 of a plurality of tapered slot...
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JP2006245472A |
To provide an electromagnetic wave absorber which is excellent in an electromagnetic absorption property, is light in weight, and is good in productivity.The electromagnetic wave absorber contains a boron solid-solution carbon black and ...
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JP2006245166A |
To provide a radio wave absorber used for shielding or absorbing electromagnetic waves, especially at a frequency band of around 5.8 GHz.Flat magnetic metal powder of 70-100 pts.wt. is blended with respect to resin binder of 100 pts.wt. ...
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JP2006233457A |
To provide a radio shielding body which can selectively shield two kinds of radio waves with different frequencies by a high shield factor.A plurality of first antennas 4 for each reflecting the radio wave with first frequencies, and a p...
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JP3814183B2 |
To obtain an electromagnetic wave absorbing slope that can produce an electromagnetic wave reflection prevention function. In an electromagnetic wave absorbing and heat generating slope 10, a three-dimensional net 12 in a predetermined t...
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JP3812977B2 |
To provide a thin inhibitor for electromagnetic interference which can effectively inhibit electromagnetic interference in the microwave band. As the material of an inhibitor for electromagnetic interference, powder 2 of a semi-hard magn...
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JP3809474B2 |
A radio telephone, preferably intended for cellular telecommunication, has an apparatus housing (20) and at least one antenna (21), which is mounted to or in connection with the apparatus housing for performing the wireless communication...
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JP2006210703A |
To provide a device for reducing a disturbance electromagnetic wave wherein reduction effect of jamming electromagnetic wave can be obtained in a wide range.The device is constituted of a conductive plate 1 constituted of a conductive ma...
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JP2006192875A |
To provide an electric wave absorber which can be manufactured without positive addition of a carbon source and to provide its manufacturing method.The electric wave absorber is obtained by laminating a dielectric layer made of a ceramic...
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JP2006184130A |
To prevent multiple reflections from occurring, when using an in-car radar device which has the need to detect an object in a short-distance area ranging from several tens of centimeters to several tens of meters, wherein the refected wa...
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JP2006186725A |
To provide a transparent electromagnetic wave absorbing board with respect to electromagnetic wave within the frequency range of 1 to 10 GHz, which can be used for a partition for a room or road, etc., or for the window of a building, et...
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JP2006179901A |
To provide an electromagnetic wave absorbing sheet having excellent permeability at high frequencies.An electromagnetic wave absorbing sheet 1 comprises a soft magnetic layer 10 having an insulating film on its surface and formed so as t...
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JP2006174230A |
To provide portable electronic equipment in which electromagnetic waves for transmitting and receiving information have a less effect on a human body.There is provided the portable electronic equipment for transmitting and receiving info...
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JP2006156543A |
To provide a method for manufacturing nano complex powder for efficiently absorbing electromagnetic waves at a GHz band in which a utilization range tends to expand following the development of communication equipment by a magnetic mediu...
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JP2006157705A |
To provide an electromagnetic wave absorbing member which can be mounted simply to a cellular phone set and which will not hinder the operability of the cellular phone set, even after being mounted.The electromagnetic wave absorbing memb...
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JP3786497B2 |
To arbitrarily set the directivity of a radio wave in accordance with a purpose by providing a non-conductive radio radiation window becoming a lens for an area facing the antenna element of an air-tight sealing means. The antenna elemen...
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JP3783728B1 |
To prevent the occurrence of a measurement error by suppressing a reflection phenomenon of an electromagnetic wave. A radio wave absorber 110 covers a pipe portion 42 and a box portion 43 of a probe main body 40. The radio wave absorber ...
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JP2006140352A |
To provide an electromagnetic wave absorber capable of absorbing the electromagnetic waves of a more extensive wavelength, having little reflection of incident electromagnetic waves and low dependability on the wavelength of electromagne...
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JP2006135031A |
To provide a transparent electromagnetic wave absorbing plate for the electromagnetic waves in the frequency range of 1-10 GHz used for portable telephones, wireless LANs, ETCs, etc.The electromagnetic wave absorbing plate is composed of...
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JP2006128312A |
To provide a thin, large and inexpensive electromagnetic wave absorber that is effective at an arbitrary incident angle.The electromagnetic wave absorber comprises a reflector layer 10 which is the aggregation of conductive materials, a ...
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JP3772577B2 |
To widen the band of the microstrip spiral antenna and to prevent its characteristics from degrading by providing a radio wave absorber at the opening of a cavity bottom part that a microstrip tapered balun penetrates. The radio wave abs...
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JP3772187B2 |
To provide a reliable, thin and lightweight electromagnetic wave absorber exhibiting improved absorbing performance capable of absorbing electromagnetic waves over an extremely wide range. A porous substrate 3 has a number of through-hol...
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JP2006115330A |
To stably read information even when a plurality of readers are adjacently arranged, when an RF-ID is introduced and a unique ID is managed.An antenna installation tool 40 has a casing 43 for housing a flat antenna 35 having a radio wave...
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JP2006097304A |
To provide an excellent radio wave absorbing panel which exerts excellent performance of absorbing radio waves from TV radio waves to radio waves for communication systems, is free from degradation of radio wave absorbency, lightweight, ...
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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...
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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...
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JP2006081041A |
To provide the joining structure of a radio wave reflector in which the number of parts is small, assembling workability is satisfactory, rigidity against wind pressure and anti-earthquake performance are excellent, side lobe suppression...
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JP2006080414A |
To obtain a radio wave absorber having improved radio wave absorption characteristics at a 30 MHz to 50 GHz band.The radio wave absorber is formed by mixing a magnetic body powder 4, a mixture mainly composed of conductive fiber-like pow...
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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 ...
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JP2006054753A |
To provide a cellular phone electronic wave removing apparatus capable of minimizing electronic waves generated from a cellular phone.When a cellular phone is provided with an external antenna, the external antenna is covered with a U-sh...
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JP2006049354A |
To solve the matter of a conventional electromagnetic wave absorber that production is serious because different linear antenna elements must be formed on an insulating sheet, i.e. a different antenna pattern must be formed or an insulat...
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JP2006041051A |
To provide a small-sized radio wave absorber having superior radio wave absorbing function in a higher frequency range, while maintaining radio wave absorption characteristics in a low frequency range, and to provide a composite radio wa...
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JP3744296B2 |
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JP2006032929A |
To provide an electromagnetic interference inhibitor and a method of reducing electromagnetic interference with the beneficial effect of reducing electromagnetic interference over a wide frequency band.An electromagnetic interference inh...
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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...
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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...
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JP2005538629A |
This invention relates to periodic electromagnetic structures ( 20 ) for use over a relatively large range of frequencies. In particular, this invention relates to microwave applications, such as antennas and low reflectivity structures....
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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...
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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...
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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...
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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 (...
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