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    • 3. 发明授权
    • Parallel multistage band-pass filter
    • 并联多级带通滤波器
    • US06914497B2
    • 2005-07-05
    • US10647504
    • 2003-08-26
    • Yasushi SanoEiichi KobayashiShingo OkajimaJun Hattori
    • Yasushi SanoEiichi KobayashiShingo OkajimaJun Hattori
    • H01P1/213H01P1/20H01P1/203H01P1/205
    • H01P1/203H01P1/20
    • In a parallel multistage band-pass filter, a transmission line having an electrical length substantially equal to half (λ/2) of the wavelength of the transmission signal is incorporated between the port on the input terminal side of the odd number (2n−1)th resonator numbered from the input terminal side and the port on the input terminal side of the even number (2n)th resonator numbered from the input terminal side; and a transmission line having an electrical length substantially equal to λ/2 is incorporated between the port on the output terminal side of the even number (2n)th resonator numbered from the input terminal side and the port on the output terminal side of the odd number (2n+1)th resonator numbered from the input terminal side. Moreover, a transmission line for adjustment of a transmission phase between the input terminal and the output terminal is incorporated between the first resonator numbered from the output terminal side and the output terminal.
    • 在并联多级带通滤波器中,具有基本上等于发送信号的波长的一半(λ/ 2)的电长度的传输线被并入奇数(2n-1)的输入端侧的端口 (2n)谐振器编号的输入端子侧的输入端子侧的端子侧; 并且在从输入端子侧编号的偶数(2n)谐振器的输出端侧的端口与奇数的输出端子侧的端口之间并入具有基本上等于λ/ 2的电气长度的传输线 第(2n + 1)个谐振器,从输入端侧编号。 此外,用于调整输入端子和输出端子之间的透射相位的传输线被并入从输出端子侧和输出端子之间编号的第一谐振器之间。