Title :
A Micromachined Low-Phase Noise K-Band Planar Oscillator
Author :
Brown, Andrew R. ; Rebeiz, Gabriel M.
Author_Institution :
The Radiation Laboratory, Electrical Engineering and Computer Science Department, The University of Michigan, Ann Arbor, MI 48105-2122. Phone: +1-734-936-0183, Fax: +1-734-647-2106, E-mail: mscout@engin.umich.edu
Abstract :
A low-phase noise 28.65 GHz oscillator has been demonstrated using a planar resonator. The resonator is micromachined close to the transistor and has an unloaded Q of 460. The oscillator uses a commercially available HEMT (Fujitsu FHR20X) for the active device, and results in an output power of 0.6 dBm with a 5.7% DC-RF efficiency. The measured phase noise is ¿92 dBc/Hz at a 100 kHz offset frequency and ¿122 dBc/Hz at 1 MHz offset. The micromachined oscillator required no manual tuning and has performance that is competitive with other hybrid, non-planar technologies such as dielectric resonator oscillators.
Keywords :
Dielectric measurements; Frequency measurement; HEMTs; K-band; Manuals; Noise measurement; Oscillators; Phase measurement; Phase noise; Power generation;
Conference_Titel :
Microwave Conference, 1999. 29th European
Conference_Location :
Munich, Germany
DOI :
10.1109/EUMA.1999.338386
