Low noise oscillator and method

Details Low noise oscillator and method Low noise oscillator and method

2011-03-22

2011-03-22

Kinkead, Arnold (Department: 2817)

Oscillators

Combined with particular output coupling network

C331S175000, C332S109000, C332S106000, C332S108000, C332S115000, C327S036000, C327S037000

Reexamination Certificate

active

07911283

ABSTRACT:
A low noise oscillator includes a resonator102that is excited with a pulsed signal (i.e., an impulse of energy) to replace energy lost to parasitic resistive losses once every Nth period (where N=1, 2, 3 . . . ). The resonating signal is monitored by a level detector and when the signal falls below a predetermined threshold, the pulse generator outputs a pulse or adjusts pulse width, pulse amplitude (or both) of a pulsed signal to create the necessary impulse for application to the resonator to recoup losses resulting from resonator operation. A phase shifting circuit may be provided to ensure the pulses are time aligned with the resonating signal to reduce noise.

REFERENCES:
patent: 5834979 (1998-11-01), Yatsuka

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