Narrow-bandwidth passive recursive CCD bandpass filter

A 37mW fully self-contained bandpass for FDM channel modems with passive CCD resonators will be described. The bandwidth is 97Hz at 131.85kHz (Q=1350). Tolerance at center frequency is less than ±3Hz.

[1]  A. Steckl,et al.  Charge domain recursive filters , 1980, 1980 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.

[2]  A. Gersho,et al.  Charge-transfer filtering , 1979, Proceedings of the IEEE.