Power Amplification of Microwave FM Communications Signals using a Phase-Locked Voltage-Tuned Oscillator

This paper describes the use of a "single-stage" phase-lock-loop oscillator to provide high gain power amplification of FM communication signals as used in radio relay of multiplex telephone and television. The paper is largely theoretical, dealing with the relationship of the loop parameters to the expected performance. Measured data are also provided for two experimental amplifiers of this type. Both theory and experiment indicate that the technique offers distinct advantages for the intended application compared with multi-stage reflection amplifiers.