FM demodulation device and FM modulation device employing a CMOS

Details FM demodulation device and FM modulation device employing a CMOS FM demodulation device and FM modulation device employing a CMOS

1989-12-08

1991-01-29

Grimm, Siegfried H.

Modulators

Frequency modulator

Including stabilization or alternatively distortion, noise...

329325, 329326, 329336, 331 2, 331 8, 331 25, 331 34, 331 57, 332135, H03C 309, H03D 306, H03K 3354, H03L 7099

Patent

active

049889605

ABSTRACT:
A signal delay device comprises a CMOS gate circuit having an input terminal to which a binary input signal to be delayed is applied, an output terminal from which a delayed signal is derived and power voltage supply terminals to which operation power voltages are applied. The delay time of the CMOS gate circuit depends upon voltage applied to it and, utilizing this phenomenon, voltage control means is provided in a power supplying path for the CMOS gate circuit for controlling voltage applied to the CMOS gate circuit. The signal delay device using the CMOS gate circuit is applied to various circuits including a FM modulator or FM demodulator. The signal delay device will assure undistorted signals.

REFERENCES:
patent: 3931588 (1976-01-01), Gehweiler
patent: 4072910 (1978-02-01), Dingwall et al.
patent: 4131861 (1978-12-01), Malaviya
patent: 4494021 (1985-01-01), Bell et al.
patent: 4567448 (1986-01-01), Ikeda
patent: 4603301 (1986-07-01), Dukes et al.

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