公开(公告)号：US4694266A

公开(公告)日：1987-09-15

申请号：US891238

申请日：1986-07-29

申请人： Peter V. Wright

发明人： Peter V. Wright

IPC分类号： G10K11/36 ,  H03H3/08 ,  H03H7/01 ,  H03H9/54 ,  H03H9/64 ,  H03H7/09

CPC分类号： H03H9/6409

摘要： A notch filter which utilizes a quadrature coupler with the input signal on one of its four terminals, a first tuned surface acoustic wave device coupled to a second on of the terminals for receiving the input signal at 0.degree. phase shift, a second tuned surface acoustic wave device coupled to a third one of the terminals for receiving the input signal with a 90.degree. phase shift and the fourth terminal being utilized as the output signal terminal.

摘要翻译： 一种陷波滤波器，其利用具有在其四个端子中的一个上的输入信号的正交耦合器，第一调谐表面声波装置，其耦合到端子上的第二端子，用于接收0°相移处的输入信号，第二调谐表面声 耦合到第三个端子的波装置，用于接收90°相移的输入信号，第四端用作输出信号端。