Discrete Fourier transform via cross correlation charge transfer

Details Discrete Fourier transform via cross correlation charge transfer Discrete Fourier transform via cross correlation charge transfer

1975-06-02

1976-10-19

Gruber, Felix D.

Registers

Transfer mechanism

Traveling pawl

23515053, 235193, 307221D, 357 24, G06G 719

Patent

active

039872920

ABSTRACT:
A circuit for generating a discrete Fourier transform in real time employs a digital and analog shift register, each cell of which is tapped to feed an analog switch. The outputs of the individual analog switches are fed to a summing bus where the switched analog signals combine to form the desired Fourier transform.

REFERENCES:
patent: 3449553 (1969-06-01), Swan
patent: 3474260 (1969-10-01), Frohbach
patent: 3598979 (1971-08-01), Moreau
patent: 3643106 (1972-02-01), Berwin et al.
patent: 3670151 (1972-06-01), Lindsay et al.
patent: 3704826 (1972-12-01), Constantin
patent: 3831013 (1974-08-01), Alsup et al.
patent: 3903406 (1975-09-01), London
Tiemann et al: Charge Transfer Devices Filter Complex Communications Sign, Electronics, Nov. 14, 1974, pp. 113-116.

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