公开(公告)号：EP1219018A1

公开(公告)日：2002-07-03

申请号：EP00963398.3

申请日：2000-09-13

申请人： CTS Corporation ,  Wordelman, James

发明人： WORDELMAN, James

IPC分类号： H03B5/36

CPC分类号： H03B5/30 ,  H03B5/36

摘要： An oscillator circuit suppresses unwanted oscillation frequencies and allows oscillation in the selected frequency band. The circuit has less sensitivity to aging of components that cause a shift in operating frequency. The oscillator includes a first and second inverting amplifier that each have an input terminal and an output terminal. A crystal resonator is connected between the input terminal of the first amplifier and the output terminal of the second amplifier. A suppression trap is connected between the first and second amplifier for suppressing oscillation outside the desired range of frequencies. The trap includes a parallel tank circuit that is connected between the output terminal of the first amplifier and the input terminal of the second amplifier. A capacitor is connected between the input terminal of the second amplifier and a ground.