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    • 2. 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。
    • 9. 发明授权
    • Dielectric laminated filter
    • 电介质层压过滤器
    • US6140891A
    • 2000-10-31
    • US954381
    • 1997-10-20
    • Hideaki NakakuboToshio IshizakiToru YamadaShoichi KitazawaHiroshi Kushitani
    • Hideaki NakakuboToshio IshizakiToru YamadaShoichi KitazawaHiroshi Kushitani
    • H01P1/203
    • H01P1/2039
    • A dielectric laminated filter has a first dielectric laminated block including a first strip line electrode and a second dielectric laminated block including a second strip line electrode and a coupling element, wherein the first and the second dielectric laminated blocks are laminated via a first shield electrode and wherein the first and the second strip lines are connected via a third strip line. This configuration allows the unwanted electromagnetic coupling between a resonator and the coupling element to be neglected, and uses the third strip line electrode to form the first and the second strip line electrodes so that they extend across different layers, thereby enabling the size of the resonator to be reduced. In addition, since the third strip line electrode serves to adjust the filter characteristics, a small high-performance dielectric laminated filter that can be designed easily can be provided.
    • 电介质层压滤波器具有包括第一带状线电极的第一电介质层叠块和包括第二带状线电极和耦合元件的第二电介质层叠块,其中第一和第二电介质层叠块经由第一屏蔽电极层叠, 其中所述第一和第二带状线经由第三带状线连接。 该配置允许谐振器和耦合元件之间的不需要的电磁耦合被忽略,并且使用第三带状线电极形成第一和第二带状线电极,使得它们跨越不同的层延伸,从而使谐振器的尺寸 要减少 此外,由于第三带状线电极用于调节滤波器特性,因此可以提供容易设计的小型高性能介质层压滤波器。