Charge domain filter with a plurality of transmission zeros

Details Charge domain filter with a plurality of transmission zeros Charge domain filter with a plurality of transmission zeros

1980-05-27

1981-08-18

Munson, Gene M.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

357 24, 333165, G11C 1928, H01L 2978, H03H 1502

Patent

active

042849098

ABSTRACT:
A filter is described utilizing charge transfer devices for implementing transmission zeros. A first shift register is provided having a plurality of M stages, where M is an integer, each stage including a respective first charge storage region. A second shift register is provided having a plurality of N stages where N is an integer greater than M, each stage including a respective first charge storage region. A first sequence of packets of charge is provided, each packet representing a respective sample of an input signal. Each of the packets of charge of the sequence is divided into a first part and a second part equal to the first part. Each of the first parts of the packets of the first sequence is applied to the first shift register and transferred from stage to stage thereof at one frequency. Each of the second parts of the packets of the first sequence is applied to the second shift register and transferred from stage to stage thereof at the aforementioned one frequency. The product of the difference of the integers N and M and a predetermined frequency of the input signal for which zero transmission is desired is set equal to an odd integer multiple of one-half of the aforementioned one frequency.

REFERENCES:
patent: 4032867 (1977-06-01), Engeler et al.
patent: 4163957 (1979-08-01), Knauer et al.
patent: 4213105 (1980-07-01), Knauer et al.

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