Conductance Measurements on Operating Magnetron Oscillators

The conductance terms in the equivalent circuit of an operating magnetron oscillator can be experimentally obtained by measuring the magnetron Q-factors both in the nonoscillating and oscillatory conditions. A method for determining the "operating" Q-factors in a magnetron by measuring the deviations in magnetron output power and oscillating frequency caused by a specified load mismatch is reviewed, and its application to magnetron conductance measurements is discussed. Experimental data are presented to illustrate the method of measurement.