Mask programmable charge coupled device transversal filter

Details Mask programmable charge coupled device transversal filter Mask programmable charge coupled device transversal filter

1982-05-10

1986-09-16

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

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

333166, 357 24, 377 60, H03H 1502, H03K 5159, G11C 1928

Patent

active

046125221

ABSTRACT:
A programmable charge coupled device transversal filter 5 includes a charge coupled device register 10 for receiving and delaying incoming analog signals, a series of floating gate charge detectors 15, a corresponding number of sets of binary scaled capacitors C.sub.0, . . . 2C.sub.0 . . . 2.sup.n C.sub.0, an output circuit including a positive and negative bus coupled to a differential amplifier, and mask or otherwise definable electrical connections for connecting selected ones of the scaled sets of capacitors between the floating gate 15 corresponding to that set and one of the positive and negative buses 22 and 23.

REFERENCES:
patent: 3633268 (1972-01-01), Engbert
patent: 3699403 (1972-10-01), Boleky, III
patent: 3947934 (1976-04-01), Olson
patent: 4156284 (1979-05-01), Engeler
patent: 4161785 (1979-07-01), Gasparek
patent: 4232279 (1980-11-01), Prince
patent: 4291286 (1981-09-01), Wagner
Wallinga et al.-"An Electrically Programmable CCD Transversal Filter with Variable Capacitance Weight Factors", IEEE Journal of Solid-State Circuits, vol. Sc-14, No. 3, Jun. 1979; pp. 538-542.
Seevinck-"An Uncommitted Integrated Circuit", The Transactions of the SA Institute of Electrical Engineers, Aug. 1976; pp. 222-225.

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