Answers are grounded in this paper and cite their sources.
Results of a noise loading test for an IMPATT oscillator which is phase-locked to an external FM driving signal [1] are discussed. Amplification (the ratio of power output of the oscillator to power input of the driving signal) of about 15 dB could be obtained for 960 telephone message channels.
No takes yet. Share an insight, caveat, or question.
Isobe et al. (1968) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: