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

Claim 9:
10. A mobile device comprising:
a transceiver configured to generate a radio frequency signal; and
a front end system including a power amplifier configured to receive the radio frequency signal at an input and including a gain bipolar transistor configured to amplify the radio frequency signal and a capacitor connected between the input of the power amplifier and a base of the gain bipolar transistor, the front end system further including a saturation detector including a detection bipolar transistor that is thermally coupled to the gain bipolar transistor, the saturation detector further including an input electrically connected to the base of the gain bipolar transistor and an output configured to generate a saturation detection signal indicating a saturation of the gain bipolar transistor, the saturation detector further including a modulation bandwidth filter electrically connected between the base of the gain bipolar transistor and a base of the detection bipolar transistor.