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    • 41. 发明授权
    • Filter, transmitter-receiver, and amplifying circuit
    • 滤波器,收发器和放大电路
    • US08933765B2
    • 2015-01-13
    • US12859573
    • 2010-08-19
    • Akihiko Akasegawa
    • Akihiko Akasegawa
    • H01P3/08H01P5/12
    • H01P1/2039H03F1/56H03F3/193H03F3/245H03F3/601H03F2200/222H03F2200/387H03F2200/414H03F2200/423H04B1/44
    • A filter includes: an input terminal to which a fundamental wave signal and a harmonic signal group of the fundamental wave signal are supplied; an output terminal configured to output the fundamental wave signal supplied to the input terminal; a transmission line configured to connect the input terminal and the output terminal; an open-end stub configured to be provided corresponding to an odd harmonic signal among the harmonic signal group, coupled to the transmission line, and has a length corresponding to one quarter of a wavelength of the corresponding odd harmonic signal; a first short-end stub configured to be coupled to the transmission line and has a length corresponding to one quarter of a wavelength of the fundamental wave signal; and a second short-end stub configured to be coupled to the transmission line.
    • 滤波器包括:提供基波信号和基波信号的谐波信号组的输入端子; 输出端子,被配置为输出提供给输入端子的基波信号; 传输线,被配置为连接所述输入端和所述输出端; 配置为对应于耦合到传输线的谐波信号组中的奇次谐波信号而提供并且具有对应于相应奇数谐波信号的波长的四分之一的长度的开放端短截线; 配置为耦合到所述传输线并且具有对应于所述基波信号的波长的四分之一的长度的第一短端短截线; 以及被配置为耦合到所述传输线的第二短端短截线。