Microwave phase locked loops using fet frequency dividers

Details Microwave phase locked loops using fet frequency dividers Microwave phase locked loops using fet frequency dividers

H - Electricity

03

L

328/112

H03L 7/08 (2006.01) H03B 19/14 (2006.01) H03L 7/183 (2006.01)

Patent

CA 1124337

ABSTRACT Disclosed is a microwave frequency generator for producing a microwave signal with high frequency accuracy, high spectral purity, low noise and high frequency stability. It is known to phase lock the fundamental microwave oscillator to a highly stable crystal oscillator at lower frequency and convert to a higher output frequency with a multiplier or harmonic generator but fm noise is also multiplied. The present invention avoids this problem by using MESFET frequency dividers to phase lock a microwave oscillator to a stable reference oscillator without the need for frequency multipliers. The MESFET frequency divider provides signal gain instead of loss during operation.

347619

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