Digital high frequency power detection circuit

Details Digital high frequency power detection circuit Digital high frequency power detection circuit

2006-02-14

2006-02-14

Vo, Nguyen T. (Department: 2685)

Telecommunications

Transmitter

Measuring, testing, or monitoring of transmitter

C455S226100, C327S058000

Reexamination Certificate

active

06999735

ABSTRACT:
A digital high frequency power detection circuit includes a peak detecting circuit and a peak computing circuit. The peak detecting circuit is operably coupled to detect a peak value of a high frequency signal and includes an amplifier, transistor, and capacitor. The amplifier has a 1stinput, 2ndinput and an output, where the 1stinput is operably coupled to receive the high frequency signal. The transistor has a gate, a drain, and a source, where the gate is coupled to the output of the amplifier, the source is coupled to a supply voltage, and the drain is coupled to the 2ndinput of the amplifier. The capacitor is operably coupled to the drain of the transistor and to a reference potential. The voltage imposed across the capacitor represents the peak value of the high frequency signal. The peak computing circuit is operably coupled to generate a digital peak value from the peak value.

REFERENCES:
patent: 3882489 (1975-05-01), Guggolz
patent: 5315168 (1994-05-01), Norton, Jr.
patent: 5777507 (1998-07-01), Kaminishi et al.
patent: 6429696 (2002-08-01), Kao et al.

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