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W-Band HEMT-oscillator with stabilization by phase controlled subharmonic injection locking

W-Band HEMT-Oszillator mit Stabilisierung durch phasenkontrollierte subharmonische Synchronisation
: Kudszus, S.; Haydl, W.H.; Neumann, M.; Hülsmann, A.


Microwave Engineering Europe:
29th European Microwave Conference 1999. Conference proceedings. Vol.1
London: Miller Freeman, 1999
ISBN: 0-86213-152-9
pp.198 ff
European Microwave Conference (EuMC) <29, 1999, München>
European Microwave Week (MIOP) <1999, München>
Conference Paper
Fraunhofer IAF ()
HEMT; injection locking; MMIC; oscillator; Oszillator; phase noise; Phasenrauschen; Synchronisation; VCO

A coplanar subbarmonic injection locked W-band HEMT VCO with an integrated varactor diode and buffer amplifier was developed, achieving a tuning range of 10 GHz and an output power of 8 dBm at 94 GHz. The oscillator was stabilized by subbarmonic injection locking to reducephase noise and simultaneously by an external phase-locked-loop (PLL) circuit to compensate for temperature drift. The locking range of the system was extended to 1 GHz by the use of the PLL circuit.