Parameter-setting approach to obtain high performance CTD transv

Details Parameter-setting approach to obtain high performance CTD transv Parameter-setting approach to obtain high performance CTD transv

1982-11-12

1985-09-03

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency or time domain filters and delay lines utilizing...

333166, 333174, 364724, 377 58, H03H 1502, H03H 1702

Patent

active

045395365

ABSTRACT:
A charge-transfer-device (CTD) transversal filter which makes use of tap-weight-adjustment circuitry for removing effects of charge-transfer inefficiency (CTI) and fixed-pattern noise (FPN). The tap weights are adjusted by measuring the response of the CTD-transversal filter to an isolated pulse input and to a zero-frequency input. The results of the measurements and reference-filter coefficients are used by the tap-weight-adjustment circuitry in order to set tap weights for the CTD-transversal filter. The tap-weight-adjustment circuitry allows the frequency response of the CTD transversal filter to be accurately tailored even though the CTD filter suffers imperfections due to CTI and FPN.

REFERENCES:
patent: 3868516 (1975-02-01), Buss
patent: 3946248 (1976-03-01), Buss
patent: 4052559 (1977-10-01), Paul et al.
patent: 4143285 (1979-03-01), White
"An Adaptive Recursive Digital Filter" by S. A. White, Proceedings of Asilomar Conference on Circuits, Systems and Computers, Pacific Grove, CA, Nov. 1975, pp. 21-25.
"An Input-Weighted CCD Transversal Filter", T. Sakave, et al., Japanese Journal of Applied Physics, vol. 16, (1977), Supp. 16-1, pp. 391-396.
"An Electronically Programmable Transversal Input Filter", R. A. Haken, IEEE Journal of Solid-State Circuits, vol. SC-17, No. 1, Feb. 1982, pp. 34-39.
"Charge-Coupled Devices", D. F. Barbe, ed., Section 5.21, Springer-Verlag, Pub. 1980, pp. 100-106.

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