Microwave oscillator with reduced phase noise

Details Microwave oscillator with reduced phase noise Microwave oscillator with reduced phase noise

H - Electricity

03

B

H03B 9/14 (2006.01) H03B 1/00 (2006.01)

Patent

CA 2043977

An oscillator operational in the millimeter wave and microwave range, including frequencies greater than ?0 GHz, is provided with reduced phase noise by enhancing Q of the resonant circuitry by reactively terminating fundamental frequency oscillation and in- creasing stored fundamental frequency energy in the resonant circuitry. A two frequency system is provided with constructive reflection of energy at fundamental frequency back to the resonant circuitry, and with isola- tion of fundamental frequency energy from the output load. Energy to the output load is obtained from the in- situ generated second harmonic of the active element. Phase noise is reduced by enhancing Q by more than an order of magnitude.

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