Patent ID: 9515611
Filing Date: 2016-12-06
CPC Classification: G11C,H03F,H03G,H03K,H04B

Claim Text:
1. A power amplifier system comprising: a first integrated circuit chip, the first integrated circuit chip including a power amplifier and a limiter in electrical communication with the power amplifier, the limiter including a diode that clips a positive voltage excursion and passes a negative voltage excursion to an averaging filter; and a second integrated circuit chip including a comparator in electrical communication with the averaging filter and configured to generate a saturation detection signal based at least in part on an output of the averaging filter, the second integrated circuit chip further including a first switch and a second switch, the first switch configured to electrically connect the output of the averaging filter to a first input of the comparator and the second switch configured to electrically connect an output of a second averaging filter to a second input of the comparator when a first band-select signal is received, the output of the second averaging filter serving as a comparator reference voltage when the first band-select signal is received.