Balanced modulator for auto zero networks

Details Balanced modulator for auto zero networks Balanced modulator for auto zero networks

1991-10-01

1992-12-01

Howell, Janice A.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307494, 307520, 328127, 328165, 328167, 330 9, G06G 712, H03K 500, H03F 102

Patent

active

051681790

ABSTRACT:
A balanced modulator for use with auto-zero networks is described. The present invention is a switched capacitor balanced modulator suitable for use in auto-zero networks where a valid input signal is available only at one phase. The present invention changes the polarity of the input signal by adjusting a switched feedback capacitor, making it possible for the switched input capacitor to sample only at one (valid) phase. The balanced modulator of the present invention may be utilized with first order auto-zero low pass filters or other switched capacitor blocks, such as gain blocks, first order high pass filters, etc.

REFERENCES:
patent: 4329599 (1982-05-01), Gregorian et al.
patent: 4331894 (1982-05-01), Gregorian et al.
patent: 4393351 (1983-07-01), Gregorian et al.
patent: 4438354 (1984-03-01), Hague et al.
patent: 4510467 (1985-04-01), Chang et al.
patent: 4617481 (1986-10-01), Masuda
patent: 4707624 (1987-11-01), Yee
patent: 4714843 (1987-12-01), Smith
patent: 4754226 (1988-06-01), Lusignan et al.

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