Transversal filter

Details Transversal filter Transversal filter

1978-01-25

1980-03-11

Gensler, Paul L.

Wave transmission lines and networks

Coupling networks

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

307221D, 333166, 364862, H03H 728, H03K 5159, G11C 1918, G11C 2700

Patent

active

041930509

ABSTRACT:
A transversal filter with a charge shift device is disclosed for realizing a given filter function. The charge shift device includes a substrate of doped semiconductor material having arranged on one surface thereof a series of shift elements, each shift element having a plurality of capacitor elements in correspondence to the number of shift pulse sequence lines employed with the charge shift device. A serial input is provided for the filter to which an input signal is connected. Capacitor elements connected to one of the shift pulse sequence lines have non-reactive amplifying output units connected thereto. At least one of the capacitor elements connected to at least one of the other shift pulse sequence lines has an additional non-reactive amplifying unit connected thereto. All of the non-reactive amplifying units also connect with an output of the filter.

REFERENCES:
patent: 3809923 (1974-05-01), Esser
patent: 3935439 (1976-01-01), Buss et al.
patent: 3952188 (1976-04-01), Sloate et al.
patent: 4100513 (1978-07-01), Weckler
Ibrahim et al., "Multiple Filter Characteristics Using a Single CCD Structure," Proc. 1975 International Conference on the Application of Charge Coupled Devices, Oct. 29- 31, 1975, pp. 245-249.
Buss et al., "Transversal Filtering Using Charge Transfer Devices" in IEEE Journal of Solid State Circuits, vol. SC8, No. 2, Apr. 1973, pp. 138-146.

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