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    • 3. 发明公开
    • 필터 회로
    • 具有减少非线性信号失真的大容量声波滤波器
    • KR1020090039753A
    • 2009-04-22
    • KR1020097002602
    • 2007-06-15
    • 콘트리아 산 리미티드 라이어빌리티 컴퍼니
    • 바버,브래들리겐차파,사하나레이스너,루스
    • H03H9/52H03H9/54H03H9/64
    • H03H9/605H03H9/02086
    • A filter circuit (200) includes at least one series resonator (204,206,208,210) having a first terminal and a second terminal, where the first and second terminals of the at least one series resonator are coupled to an input (202) and an output (232) of the filter circuit, respectively. The filter circuit further includes at least one shunt resonator (212,214,216,218,220) having a first terminal and a second terminal, where the first terminal of the at least one shunt resonator is coupled to the input of the filter circuit and the second terminal of the at least one shunt resonator is coupled to ground. A polarity of the first terminal of the at least one series resonator and a polarity of the first terminal of t at least one shunt resonator are selected so as to reduce harmonic signal generation and other types o distortion in the filter circuit.
    • 滤波器电路(200)包括具有第一端子和第二端子的至少一个串联谐振器(204,206,208,210),其中至少一个串联谐振器的第一和第二端子耦合到输入端(202)和输出端(232) )。 滤波器电路还包括具有第一端子和第二端子的至少一个并联谐振器(212,214,216,218,220),其中所述至少一个并联谐振器的第一端子耦合到所述滤波器电路的输入端并且所述至少一个并联谐振器的第二端子 一个并联谐振器耦合到地。 选择至少一个串联谐振器的第一端子的极性和至少一个并联谐振器的第一端子的极性,以便减少滤波器电路中的谐波信号产生和其它类型的失真。