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    • 2. 发明申请
    • SWITCH CIRCUIT
    • 开关电路
    • US20130169346A1
    • 2013-07-04
    • US13608449
    • 2012-09-10
    • Yoshihiro TSUKAHARA
    • Yoshihiro TSUKAHARA
    • H03K17/56
    • H03K17/693
    • A switch circuit includes: first, second, and third input-output terminals; a first switching element connected between the first and second input-output terminals; a second switching element connected between the third input-output terminal and a grounding point; a third switching element connected between the first and third input-output terminals; a fourth switching element connected between the second input-output terminal and the grounding point; a first control voltage applying terminal connected to control terminals of the first and second switching elements; a second control voltage applying terminal connected to control terminals of the third and fourth switching elements; first and second resistors connected between the control terminals of the first and second switching elements and the first control voltage applying terminal, respectively; and first and second diodes connected in parallel with the first and second resistors, respectively, and having cathodes connected to the first control voltage applying terminal.
    • 开关电路包括:第一,第二和第三输入输出端子; 连接在第一和第二输入 - 输出端子之间的第一开关元件; 连接在第三输入输出端子和接地点之间的第二开关元件; 第三开关元件,连接在第一和第三输入 - 输出端子之间; 连接在第二输入 - 输出端子和接地点之间的第四开关元件; 连接到第一和第二开关元件的控制端子的第一控制电压施加端子; 连接到第三和第四开关元件的控制端子的第二控制电压施加端子; 分别连接在第一和第二开关元件的控制端子与第一控制电压施加端子之间的第一和第二电阻器; 以及分别与第一和第二电阻器并联连接并具有连接到第一控制电压施加端子的阴极的第一和第二二极管。
    • 3. 发明授权
    • Semiconductor switch, transceiver, transmitter, and receiver
    • 半导体开关,收发器,发射器和接收器
    • US08416032B2
    • 2013-04-09
    • US12917520
    • 2010-11-02
    • Yoshihiro Tsukahara
    • Yoshihiro Tsukahara
    • H01P1/10H01P1/15
    • H03K17/002H03K17/693H04B1/48
    • A semiconductor switch includes a main line, branch lines branching from the main line at the same branch point, switching devices shunt-connected between one of the branch lines and ground and operated so that the one of the branch lines is connected to and disconnected from ground, a main terminal connected to an end of the main line, and branch terminals connected to an end of one of the branch lines. The impedance of one of the branch lines, as seen from the branch point, is conjugately matched to the combined impedance of the main line and the rest of the branch lines, as seen from the branch point, the one of the branch lines transmitting an RF signal, and the rest of the branch lines blocking the RF signal.
    • 半导体开关包括主线,在相同分支点处从主线分支的分支线,分支连接在一条分支线之间并接地并被操作的开关装置,使得一条支线连接到和断开 接地,连接到主线的端部的主端子和连接到一条支线的端部的分支端子。 从分支点看,分支线之一的阻抗与主线和其余分支线的组合阻抗共轭匹配,如从分支点所见,分支线中的一条发送 RF信号,其余的分支线阻挡RF信号。
    • 6. 发明申请
    • HIGH FREQUENCY SECOND HARMONIC OSCILLATOR
    • 高频二次谐波振荡器
    • US20110175686A1
    • 2011-07-21
    • US12911764
    • 2010-10-26
    • Shinsuke WatanabeYoshihiro TsukaharaKo KanayaShinichi Miwa
    • Shinsuke WatanabeYoshihiro TsukaharaKo KanayaShinichi Miwa
    • H03B5/12
    • H03B5/1847H03D2200/0086
    • A high frequency second harmonic oscillator includes a transistor, a first signal line connected at a first end to the base or gate of the transistor, a first shunt capacitor connected at a first end to a second end of the first signal line and at a second end to ground, a second signal line connected at a first end to the collector or drain of the transistor, a second shunt capacitor connected at a first end to a second end of the second signal line and at a second end to ground, and a high capacitance capacitor connected between the first signal line and the second signal line. The first signal line has a length equal to an odd integer multiple of one quarter of the wavelength of a fundamental signal, plus or minus one-sixteenth of the wavelength of the fundamental signal.
    • 高频二次谐波振荡器包括晶体管,在第一端连接到晶体管的基极或栅极的第一信号线,在第一端连接到第一信号线的第二端的第一并联电容器, 在第一端连接到晶体管的集电极或漏极的第二信号线,在第一端连接到第二信号线的第二端并在第二端连接到地的第二并联电容器,以及 连接在第一信号线和第二信号线之间的高容量电容器。 第一信号线具有等于基本信号波长四分之一的奇整数倍的长度,加上或减去基波信号波长的十六分之一。
    • 7. 发明授权
    • High-frequency switch
    • 高频开关
    • US07411471B2
    • 2008-08-12
    • US11484661
    • 2006-07-12
    • Yoshihiro Tsukahara
    • Yoshihiro Tsukahara
    • H01P1/10H01P5/12
    • H01P1/15H03H11/28
    • A high-frequency switch operating in a millimeter wave band that includes a signal path having a λ/4 transmission path, for part of two or more branch signal paths that branch from an input connection path via a branch point; an FET, which is shunt-connected between a grounding end and the branch signal paths that are positioned between the λ/4 transmission path and a terminal end, as viewed from the branch point, and used to connect or disconnect the branch signal paths and the grounding end; an output matching circuit, which is positioned on the branch signal paths that are positioned between a terminal end and a connection point for the FET as viewed from the branch point, and includes a shunt-connected stub; and a matching FET, which is connected between the stub and the grounding end and used to connect or disconnect the stub and the grounding end in accordance with the FET's connection/disconnection.
    • 一种工作在毫米波段的高频开关,其包括具有λ/ 4传输路径的信号路径,用于经由分支点从输入连接路径分支的两个或更多个分支信号路径的一部分; FET,分支连接在接地端与位于λ/ 4传输路径和终端之间的分支信号路径之间,从分支点观察,并用于连接或断开分支信号路径, 接地端; 输出匹配电路,其位于从分支点观察的位于FET的终端和FET的连接点之间的分支信号路径上,并且包括分流连接短截线; 以及连接在短截线和接地端之间的匹配FET,用于根据FET的连接/断开连接或断开短截线和接地端。
    • 8. 发明申请
    • High-frequency switch
    • 高频开关
    • US20070171000A1
    • 2007-07-26
    • US11484661
    • 2006-07-12
    • Yoshihiro Tsukahara
    • Yoshihiro Tsukahara
    • H03H7/38
    • H01P1/15H03H11/28
    • A high-frequency switch operating in a millimeter wave band that includes a signal path having a λ/4 transmission path, for part of two or more branch signal paths that branch from an input connection path via a branch point; an FET, which is shunt-connected between a grounding end and the branch signal paths that are positioned between the λ/4 transmission path and a terminal end, as viewed from the branch point, and used to connect or disconnect the branch signal paths and the grounding end; an output matching circuit, which is positioned on the branch signal paths that are positioned between a terminal end and a connection point for the FET as viewed from the branch point, and includes a shunt-connected stub; and a matching FET, which is connected between the stub and the grounding end and used to connect or disconnect the stub and the grounding end in accordance with the FET's connection/disconnection.
    • 一种工作在毫米波段的高频开关,其包括具有λ/ 4传输路径的信号路径,用于经由分支点从输入连接路径分支的两个或更多个分支信号路径的一部分; FET,分支连接在接地端与位于λ/ 4传输路径和终端之间的分支信号路径之间,从分支点观察,并用于连接或断开分支信号路径, 接地端; 输出匹配电路,其位于从分支点观察的位于FET的终端和FET的连接点之间的分支信号路径上,并且包括分流连接短截线; 以及连接在短截线和接地端之间的匹配FET,用于根据FET的连接/断开连接或断开短截线和接地端。
    • 9. 发明授权
    • High frequency switch
    • 高频开关
    • US07106146B2
    • 2006-09-12
    • US10895837
    • 2004-07-22
    • Yoshihiro TsukaharaMakio Komaru
    • Yoshihiro TsukaharaMakio Komaru
    • H01P1/15
    • H01P1/15
    • A signal line, which branches into four more from a connecting line on the input side via a branch point and has the branch signal lines including λ/4 transmission lines at their parts, and FETs respectively connected in shunt with the branch signal lines between connecting points on the output terminal sides as viewed from the λ/4 transmission lines provided in the branch signal lines and ground ends are provided on a semiconductor substrate. Connecting points of the FETs at the two branch signal lines are disposed with being spaced such a distance that isolation corresponding to the frequency of an RF signal reaches more than equal to 25 dB and less than or equal to 35 dB at the ends of these branch signal lines.
    • 信号线通过分支点从输入侧的连接线分支成四个,并且在它们的部分具有包括λ/ 4传输线的分支信号线,并且分别连接到分支信号线之间的连接的FET连接 从设置在分支信号线和接地端的λ/ 4传输线观察的输出端侧的点设置在半导体衬底上。 两个分支信号线上的FET的连接点被设置成间隔开这样的距离,使得对应于RF信号的频率的隔离在这些分支的端部达到大于等于25dB且小于或等于35dB 信号线。