Method for reduction of phase noise in microwave voltage-control

Details Method for reduction of phase noise in microwave voltage-control Method for reduction of phase noise in microwave voltage-control

1999-04-14

2000-08-22

Mis, David

Oscillators

With parasitic oscillation control or prevention means

331 36C, 331 96, 331117D, 331108D, 331172, 331175, 331177V, H03B 500, H03B 518

Patent

active

061078921

ABSTRACT:
Phase noise in an RF oscillator is significantly reduced by loosely couping another quieter RF oscillator having noise patterns uncorrelated to the first RF oscillator so that it frequency locks with the first RF oscillator. The coupling is increased until a significant reduction in phase noise occurs at high coupling levels where the first RF oscillator displays phase noise similar to the the second RF oscillator.

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patent: 5789961 (1998-08-01), Bulsara et al.
"Injection Locking of Microwave Solid-State Oscillators" by Kaneyuki Korokawa, Proceedings of the IEEE, vol. 61, No. 10, Oct. 1973, pp. 1386-1410.

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