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    • 5. 发明专利
    • EXHAUST COMPONENT SENSOR
    • JPH11258201A
    • 1999-09-24
    • JP6181498
    • 1998-03-13
    • HITACHI LTDHITACHI CAR ENG CO LTD
    • UENO SADAYASUOUCHI SHIROEBINE HIROMICHI
    • G01N27/409
    • PROBLEM TO BE SOLVED: To improve stability against the disconnection of heater wire due to thermal stress by constituting a heater by repeatedly reciprocating or turning a thin platinum-group foil or a thin line laminated and arranged on a closely packed inorganic layer. SOLUTION: A heater 16 is constituted by repeatedly reciprocating or turning a platinum-group thin foil or a thin line laminated and arranged on an inorganic layer more closely packed or of a smaller void ratio than that of a porous ceramic material. In other words, the heater 16 is tightly and integrally molded on a porous ceramic layer by fusion bonding by burning a glass material. As an inorganic agent such as a glass agent is used for filling as an adhesive, there are formed extremely few voids between the heater 16 and a zirconia solid electrolyte body or its coated layer in comparison with direct bonding to the porous ceramic layer. Therefore, the heater 16 is securely fixed, and there is no fear of the occurrence of cracks. Then the disconnection failures of wires due to thermal stress in heating are eliminated, and it is possible to use stably.
    • 6. 发明专利
    • High frequency communication apparatus and manufacturing method thereof
    • 高频通信设备及其制造方法
    • JP2004040430A
    • 2004-02-05
    • JP2002194072
    • 2002-07-03
    • Hitachi Car Eng Co LtdHitachi Ltd株式会社日立カーエンジニアリング株式会社日立製作所
    • HIGUMA MASATOKOSHIZAKA ATSUSHIOUCHI SHIRO
    • H01P3/08H04B1/38H04B1/3822
    • PROBLEM TO BE SOLVED: To provide a high frequency communication apparatus for reducing an interference by an electromagnetic wave from inside and outside its enclosure. SOLUTION: In a transmitter-receiver constituted of: an MMIC acting like an oscillator, an amplifier and a mixer; a circuit board on which the MMIC is mounted and to which the MMIC is connected; an antenna board for constituting an antenna; a base on which the circuit board and the antenna board are mounted and through which a coaxial line or a waveguide is penetrated and supported; and a cover at the side of which projections are periodically provided, the MMIC and the circuit board existing on the side, the pitch, size and shape of the projections differ from each other between a cover part placed at a position opposed to the coaxial line or the waveguide and the other cover part than the position, and the projections are formed by extrusion. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种用于减少来自其外壳内外的电磁波的干扰的高频通信装置。 解决方案:在由以下构成的发射机 - 接收机中构成:MMIC如振荡器,放大器和混频器; 安装有MMIC的电路板,MMIC连接到该电路板; 用于构成天线的天线板; 其上安装有电路板和天线板的基座,穿过并支撑同轴线或波导的基座; 并且其周边设置有突起的盖,MMIC和存在于侧面的电路板,突起的间距,尺寸和形状在放置在与同轴线相对的位置的盖部之间彼此不同 或波导和另一个盖部分,并且突起通过挤压形成。 版权所有(C)2004,JPO
    • 8. 发明专利
    • HIGH FREQUENCY COAXIAL LINE CONNECTION STRUCTURE
    • JP2002076720A
    • 2002-03-15
    • JP2000263739
    • 2000-08-31
    • HITACHI LTDHITACHI CAR ENG CO LTD
    • SASADA YOSHIYUKIISONO TADASHIMATSUURA KAZUOOUCHI SHIROOBA MAMORU
    • H05K1/11H01P1/04H01P1/30H01P5/08H05K3/46
    • PROBLEM TO BE SOLVED: To provide a high frequency coaxial line connection structure which has a high degree of reliability against temperature fluctuation hysteresis by increasing the degree of deformation on a first circuit substrate 2 and a second circuit substrate 3 against expansion and contraction of a center conductor 4 accompanying the fluctua tion of the ambient temperature. SOLUTION: The high frequency coaxial line connection structure comprises a first organic material substrate 21 which has metalized areas on both surface and which forms the first high frequency circuit, of a second organic material substrate 31 which has metalized areas on both surfaces which forms the second high frequency circuit. And the organic material substrate 21 and the organic material substrate 31 are each bonded on one and the other side surface of a base substrate 1 which forms a through hole starting from the organic material substrate 21 through the substrate 1 reaching to the organic material substrate 31. The base conductor 4 is deployed coaxially within the through hole and conductively connected each ends to the first and second high frequency circuits. The through holes are comprised of a first through hole 8 which formed on the base substrate 1 and a second through hole 9 formed on the organic material substrate 21 and the organic material substrate 31, and the diameter d1 of the first through hole 8 is formed bigger than the diameter d2 of the second through hole 9.