Low noise synchronous detection for a charge transfer device

Details Low noise synchronous detection for a charge transfer device Low noise synchronous detection for a charge transfer device

1986-03-10

1987-02-17

LaRoche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329109, 375 24, 307444, 3072385, 365183, 365208, 377 63, 358213, H03D 318

Patent

active

046442871

ABSTRACT:
Charge transfer device output signals typically include an information component which is contaminated with both on-chip amplifier noise and reset noise. For reducing these noise components, the device output signal is applied to first and second synchronous detectors. The first synchronous detector is responsive to a first reference carrier signal for maximizing at its output the information component while the second synchronous detector is responsive to a second reference carrier for maximizing at its output the noise components. The synchronous detector output signals are then differentially combined so as to substantially reduce the noise components from the contaminated information component.

REFERENCES:
patent: Re30087 (1979-08-01), White et al.
patent: 4309624 (1982-01-01), Hynecek et al.
patent: 4330753 (1982-05-01), Davy
patent: 4556851 (1985-12-01), Levine
Pages 54-56 of the book entitled Charge Transfer Devices by Carlo Sequin and Michael Tompsett, published in 1975.

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