High frequency signal detecting circuit

Details High frequency signal detecting circuit High frequency signal detecting circuit

1993-11-29

1996-07-02

Chin, Stephen

Pulse or digital communications

Transmitters

375296, 370 953, H04L 2704, H04L 2503, H04J 316

Patent

active

055330576

ABSTRACT:
A high frequency signal detecting circuit capable of smoothing a mean power in each time slot and performing rapid response during transition time. A detector detects the envelope of a radio frequency signal whose power level may change depending on the time slot. In response to a control signal, a filter narrows the pass band in the data field of each time slot and broadens it in the transition field of the same. The output of the detector is applied to the filter. The detecting circuit, therefore, produces an output which is smoothed in the data field without regard to the content of data and which responds to a change in the power level sharply in the transition field.

REFERENCES:
patent: 4356567 (1982-10-01), Eguchi et al.
patent: 4495619 (1985-01-01), Acampora

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