Source of phase-modulated signal (a) and spectrum of output microwave signal (b).
Phase modulator with additional components needed to characterize statistical properties of spurious amplitude modulation (a) and voltage spectrum at the output of the out-of-loop amplitude detector with control loop closed (b).
Schematic diagram of an amplitude modulator (a) and diagrams illustrating its operation (b).
Microwave phase modulator with suppressed amplitude modulation at frequency 2F mod (a) and index of spurious amplitude modulation at frequency 2F mod as a function of time (b).
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