发明授权
- 专利标题： Pole quality factor (Q) enhancement technique for notch filters
- 专利标题（中）： 陷波滤波器的极品质因子（Q）增强技术
-
申请号： US37299申请日： 1979-05-09
-
公开(公告)号： US4242642A公开(公告)日： 1980-12-30
- 发明人: Kenneth R. Laker , Jimmy Tow
- 申请人： Kenneth R. Laker , Jimmy Tow
- 申请人地址： NJ Murray Hill
- 专利权人： Bell Telephone Laboratories, Incorporated
- 当前专利权人： Bell Telephone Laboratories, Incorporated
- 当前专利权人地址： NJ Murray Hill
- 主分类号： H03H11/12
- IPC分类号： H03H11/12 ; H03F1/34
摘要：
An enhanced pole quality factor (Q) notch filter section circuit includes an active biquadratic notch filter section and a pole quality factor enhancement amplifier responsive to the output of the biquadratic notch filter section for providing at the input of the biquadratic notch filter section negative feedback in pass and stop bands of frequencies and positive feedback in the transition range of frequencies between the pass and stop bands of frequencies.
公开/授权文献
- US5375837A Folding table tennis apparatus 公开/授权日：1994-12-27
信息查询
