Patent ID: 7974595
Filing Date: 2011-07-05
Classification: G01R

Abstract:
1. A power amplifier (PA) test circuit, comprising: an oscillator configured to generate a radio frequency (RF) signal at a predetermined frequency; a parallel resonant circuit tuned to the predetermined frequency; a pre-power amplifier (PPA) coupled to the oscillator and the parallel resonant circuit, and configured to amplify and drive the RF signal generated by the oscillator at the predetermined frequency from an output of the PPA into a load; a disabling component configured to disable the RF signal from the oscillator based on the state of a disable signal; a first peak detector coupled to the output of the PPA, configured to detect one of a peak voltage or current, and a minimum voltage or current driven to the load; and a second peak detector coupled to an input of the PPA, configured to detect a peak voltage or minimum voltage of the RF signal input applied to the PPA.