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Low noise, tunable GaAs bipolar oscillator

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3 Author(s)
A. Dearn ; Ferranti Int. plc, Poynton, UK ; G. Parkinson ; P. J. Topham

Varactor tuned oscillators using GaAs heterojunction bipolar transistors (HBTs) covering the frequency range 2.7-6.2 GHz are reported. These oscillators have the widest electronic tuning range so far reported for HBT oscillators. The oscillators have a phase noise of -105 dBc/Hz at 100 kHz offset which is the lowest phase noise so far obtained with a broadband HBT oscillator.

Published in:

Electronics Letters  (Volume:27 ,  Issue: 14 )