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    • 1. 发明授权
    • Multi-mode resonator/filter comprised of first and second columnar central conductors disposed within a cylindrical exterior conductor
    • 多模谐振器/滤波器由设置在圆柱形外部导体内的第一和第二柱状中心导体组成
    • US09385409B2
    • 2016-07-05
    • US14348073
    • 2012-09-29
    • Toshio Ishizaki
    • Toshio Ishizaki
    • H01P1/205H01P1/208H01P7/04H01P7/06H01P1/20
    • H01P1/2053H01P1/20H01P1/2082H01P7/04H01P7/06
    • Provided is a multi-mode resonator in which four resonance modes are degenerated, a dielectric member is not necessarily required, and enhanced efficient use of space is obtained. A multi-mode resonator 1 is a multi-mode resonator in which four resonance modes are degenerated, this resonator including an exterior conductor 2 made of a metal material, and formed in the shape of a box, wherein both ends of a cylindrical circumferential wall section 2c are closed off by a first end section 2a and a second end section 2b; a columnar first central conductor disposed inside the exterior conductor 2, one end 3a being shorted to the first end section 2a of the exterior conductor 2 and another end 3b being left open; and a columnar second central conductor disposed inside the exterior conductor 2, one end 4a being shorted to the second end section 2b of the exterior conductor 2 and another end 4b being left open.
    • 提供了一种其中四个谐振模式退化的多模式谐振器,不一定需要电介质构件,并且获得了有效利用空间的增强。 多模谐振器1是其中四个谐振模式退化的多模式谐振器,该谐振器包括由金属材料制成并形成为盒形的外部导体2,其中圆柱形周壁的两端 部分2c由第一端部分2a和第二端部部分2b封闭; 设置在外部导体2的内部的柱状的第一中心导体,一端3a与外部导体2的第一端部2a短接,另一端部3b断开; 以及设置在外部导体2的内部的柱状的第二中心导体,一端4a与外部导体2的第二端部2b短路,另一端4b保持开放。
    • 6. 发明申请
    • Dielectric resonator, dielectric filter, and method of supporting dielectric resonance element
    • 介质谐振器,介质滤波器和支持介质谐振元件的方法
    • US20050030131A1
    • 2005-02-10
    • US10911078
    • 2004-08-03
    • Takehiko YamakawaToshio Ishizaki
    • Takehiko YamakawaToshio Ishizaki
    • H01P7/10H01P1/20
    • H01P7/10
    • A dielectric resonator has a metallic casing having an opening, a metallic cover which covers the opening, and a dielectric resonance element having a pair of flat surfaces formed opposite from each other, one of the pair of flat surfaces being brought into contact with a bottom portion of the casing. At least one of the cover and the bottom portion has a resilient portion which supports the dielectric resonance element and presses one of the pair of flat surfaces by a biasing force so as to follow expansion or contraction of the dielectric resonance element due to a change in temperature. The biasing force applied from the resilient portion is obtained by warping of a portion of the cover or a portion of the bottom portion that one of the pair of flat surfaces or an edge portion of the flat surface contacts.
    • 介质谐振器具有金属壳体,其具有开口,覆盖开口的金属盖,以及具有彼此相对形成的一对平坦表面的介电谐振元件,所述一对平坦表面中的一个与底部接触 外壳的一部分。 盖和底部中的至少一个具有弹性部分,该弹性部分支撑介电谐振元件并且通过偏置力按压一对平坦表面中的一个,以便随着介电谐振元件的膨胀或收缩而发生变化 温度。 从弹性部分施加的偏压力通过使一对平坦表面中的一个或平坦表面的一个接触的盖的一部分或底部的一部分翘曲获得。
    • 9. 发明授权
    • High frequency switch and mobile communication equipment
    • 高频开关和移动通信设备
    • US06586786B2
    • 2003-07-01
    • US10032856
    • 2001-12-27
    • Shoichi KitazawaMasaharu TanakaToshio IshizakiToru Yamada
    • Shoichi KitazawaMasaharu TanakaToshio IshizakiToru Yamada
    • H01L2980
    • H01P1/15H01L2924/0002H01L2924/00
    • A high frequency switch, has a transmitting terminal; a receiving terminal; an antenna terminal; a first diode having an anode electrically connected to the transmitting terminal and a cathode electrically connected to the antenna terminal; a second diode having an anode connected through a transmission line of ¼ wavelength to the antenna terminal which is electrically connected to the receiving terminal, and having the side of a cathode grounded; and a control terminal provided to a node between the transmitting terminal and the first anode, wherein the first and second diodes have a tradeoff relationship between ON resistance thereof and capacitance between the anode and the cathode, and the ON resistance of the first diode is lower than the ON resistance of the second diode, and the capacitance of the second diode in the OFF state is smaller than the capacitance of the first diode in the OFF state.
    • 高频开关,发射端子,接收端子,天线端子,第一二极管,具有与发射端子电连接的阳极和与天线端子电连接的阴极;第二二极管,具有通过传输线连接的阳极 对天线端子的1/4波长,电连接到接收端子,并且阴极侧接地; 以及提供给发送端子和第一阳极之间的节点的控制端子,其中第一和第二二极管在其导通电阻和阳极和阴极之间的电容之间具有折衷关系,并且第一二极管的导通电阻低于 第二二极管的导通电阻和第二二极管在OFF状态下的电容小于第一二极管在OFF状态下的电容。