Switched capacitor envelope detector

Details Switched capacitor envelope detector Switched capacitor envelope detector

1982-09-20

1986-04-22

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307350, 307236, 307262, 328 26, 328167, H03K 500, H03K 5153, H03K 522

Patent

active

045845328

ABSTRACT:
An envelope detector comprising an absolute value detection portion and a filter portion implemented in switched capacitor technology with common circuit elements is provided. The absolute value of an input signal is obtained and an amplitude envelope is filtered therefrom. The absolute value detection portions and the filter portions share the same integrating operational amplifier to perform the envelope detection.

REFERENCES:
patent: 3828259 (1974-08-01), Riethmuller et al.
patent: 3986127 (1976-10-01), Ray
patent: 4179665 (1979-12-01), Gregorian
patent: 4210872 (1980-07-01), Gregorian
patent: 4306197 (1981-12-01), Gregorian
patent: 4333064 (1982-06-01), Kato et al.
patent: 4400637 (1983-08-01), Klar et al.
patent: 4429281 (1984-01-01), Ito et al.
patent: 4455539 (1984-06-01), Wurzburg
Szentirmai et al., "Switched-Capacitor Building Blocks", IEEE Trans. on Circuits and Systems, vol. CAS-27, No. 6, Jun. 1980, pp. 492-500.

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