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Low phase noise X-band push-push oscillator with frequency divider

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4 Author(s)
Schott, M. ; Ferdinand-Braun-Inst. fur Hochstfrequenztechnik, Berlin, Germany ; Lenk, F. ; Meliani, C. ; Heinrich, W.

A MMIC Colpitts oscillator in push-push configuration with integrated frequency divider using InGaP/GaAs HBTs is presented. The output is taken from the second harmonic port while the fundamental signal is fed to a frequency divider by two thus providing a reference signal at one quarter of the output frequency. The MMIC VCO reaches state-of-the-art phase-noise performance in X-band down to -120dBc/Hz at 1MHz offset frequency at high output power and a tuning range of 4%.

Published in:

Microwave Symposium Digest, 2005 IEEE MTT-S International

Date of Conference:

12-17 June 2005