Receive signal level detection system

Details Receive signal level detection system Receive signal level detection system

1995-05-22

1997-12-23

Vo, Nguyen

Telecommunications

Receiver or analog modulated signal frequency converter

Measuring or testing of receiver

4552264, H04B 1700

Patent

active

057016011

ABSTRACT:
A superheterodyne receiver is provided in which first and second envelope detectors having a function of regulating the gain and offset voltage are used to detect receive signal levels from first and second intermediate frequency signals. These receive signal levels are compensated with respect to a phase difference through a phase difference compensating circuit. The compensated signals are then summed by an adder to provide a receive signal level detection output.

REFERENCES:
patent: 318434 (1885-12-01), Arai
patent: 4131761 (1978-12-01), Giusto
patent: 4776040 (1988-10-01), Ichikawa et al.
patent: 4939788 (1990-07-01), Hasegawa
patent: 5108334 (1992-04-01), Eschenback et al.

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