On the Use of Built-In Temperature Sensors to Monitor Aging in RF Circuits

This paper proposes a novel strategy to detect aging in high frequency integrated circuits based on on-line temperature monitoring using built-in differential temperature sensors. To theoretically prove the feasibility of the technique, the paper describes the electro-thermal methodology followed to assert the sensitivity of the temperature sensor's output voltage to track the aging of a 2.4 GHz class A power amplifier.