Soft saturation detection for power amplifiers

Details Soft saturation detection for power amplifiers Soft saturation detection for power amplifiers

2007-11-27

2007-11-27

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including protection means

Reexamination Certificate

active

11282734

ABSTRACT:
A soft saturation detection circuit for a radio frequency (“RF”) power amplifier is configured to detect the onset of soft saturation in an unambiguous and accurate manner. The circuit compares the time derivative of a voltage signal indicative of the RF output power to the time derivative of a control voltage signal for the RF power amplifier. The circuit also employs a gating mechanism that ensures that a soft saturation indication signal is generated under appropriate operating conditions.

REFERENCES:
patent: 6430402 (2002-08-01), Agahi-Kesheh
patent: 6476677 (2002-11-01), Komaili et al.
patent: 6741840 (2004-05-01), Nagode et al.
patent: 2004/0176049 (2004-09-01), Nagode et al.
patent: 2004/0198301 (2004-10-01), Rozenblit et al.
patent: 2005/0093625 (2005-05-01), Khlat et al.

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