Patent ID: 9379675
Filing Date: 2016-06-28
CPC Classification: H03F

Claim Text:
1. An apparatus comprising: an envelope detector configured to generate an indication of instantaneous power of a radio frequency (RF) signal; an averaging circuit configured to generate an indication of an average power of the RF signal; a first comparator configured to receive a first threshold and the indication of the average power of the RF signal, and to activate an average overdrive signal based at least partly on comparing the first threshold with the indication of the average power of the RF signal; a second comparator configured to receive a second threshold and the indication of the instantaneous power of the RF signal, and to activate a transient overdrive signal based at least partly on comparing the second threshold with the instantaneous indication of the power of the RF signal; and an alarm circuit configured to generate an overdrive protection signal, wherein the alarm circuit is configured to assert the overdrive protection signal in response to the indication of average power of the RF signal satisfying the first threshold, and wherein the alarm circuit is configured to assert the overdrive protection signal in response to the indication of the instantaneous power of the RF signal satisfying the second threshold.