Low phase noise oscillator with flicker (1/f) noise suppression circuit

Low phase noise oscillator with flicker (1/f) noise suppression circuit

The author describes a new and simple oscillator circuit enhancement, demonstrated with a 10-GHz Gunn oscillator, that suppresses the generation of flicker (1/f) noise, which is the major contributor to phase noise close to the carrier. The suppression of 1/f noise is accomplished by a circuit, inte...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: Cohen, L.D.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
1f noise
Circuit noise
Diodes
Frequency
Gunn devices
Oscillators
Phase noise
Varactors
Voltage fluctuations
White noise
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Beschreibung
Zusammenfassung:The author describes a new and simple oscillator circuit enhancement, demonstrated with a 10-GHz Gunn oscillator, that suppresses the generation of flicker (1/f) noise, which is the major contributor to phase noise close to the carrier. The suppression of 1/f noise is accomplished by a circuit, integral to the Gunn oscillator, that reduces the oscillator pushing (frequency change with bias voltage) to zero. The technique is capable of 1/f noise suppression from the 1/f noise that is approximately 25 kHz for a Gunn diode to carrier frequency.< >
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.1992.188179