Patent ID: 11916517
Assignee: SKYWORKS SOLUTIONS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method of power amplifier saturation detection, the method comprising:
receiving a radio frequency signal at an input to a power amplifier that includes a gain bipolar transistor and a capacitor connected between the input of the power amplifier and a base of the gain bipolar transistor;
amplifying the radio frequency signal using the gain bipolar transistor;
generating a saturation detection signal indicating a saturation of the gain bipolar transistor using a saturation detector, including thermally coupling the gain bipolar transistor to a detection bipolar transistor of the saturation detector, and providing an input voltage at the base of the gain bipolar transistor to an input of the saturation detector; and
providing filtering using a modulation bandwidth filter of the saturation detector, the modulation bandwidth filter electrically connected between the base of the gain bipolar transistor and a base of the detection bipolar transistor.