A Technique for Stabilizing Microwave Oscillators

The stabilization of microwave oscillators whose short term deviations in frequency are in the order of one part in 10/sup 8/ is discussed in this article. The control system, which consists of a dual mode reference cavity and feedback amplifier, is applied to a reflex klystron oscillator. Circuit analysis and practical design considerations are presented. A practical method of measuring the actual frequency stability is given.