| 摘要 |
<p>A band pass filter (50) includes a pair of notch filters (51, 52) having different notch frequencies and a difference amplifier (54) coupled to the outputs of the notch filters. The notch filters preferably have response curves that intersect at -3 dB. The separation of the notch frequencies determines, in part, the ripple in the response curve of the band pass filter.</p> |
