Mismatch Error in Nonlinear-Source Power Measurements

The power output of a pulsed microwave oscillator or amplifier is often measured by means of a calibrated crystal detector preceeded by a calibrated attenuator. If the attenuator and crystal are not matched, then an error arises which is analogous to attenuator "mismatch" error in linear circuits, although the circuit under consideration has a nonlinear power source. An upper limit for this error is calculated and error curves are presented as a function of crystal and attenuator mismatch.