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Push-Push Oscillators for 94 and 140 GHz Applications using standard pseudomorphic GaAs HEMTs

Auf einer kommerziellen, pseudomorphen Gallium-Arsenid-Technologie basierende Push-Push-Oszillatoren für die Anwendung bei 94 und 140 GHz
: Kudszus, S.; Haydl, W.H.; Tessmann, A.; Bronner, W.; Schlechtweg, M.

Sigmon, B. ; IEEE Microwave Theory and Techniques Society:
A microwave odyssey. IEEE MTT-S International Microwave Symposium digest 2001. Vol.3 : May 20 - 25, 2001, Phoenix Civic Plaza, Phoenix, AZ
Piscataway, NJ: IEEE, 2001
ISBN: 0-7803-6538-0
ISBN: 0-7803-6713-8
International Microwave Symposium (IMS) <2001, Phoenix/Ariz.>
Conference Paper
Fraunhofer IAF ()
push-push oscillator; Push-Push-Oszillator; coplanar waveguide; koplanarer Wellenleiter; MMIC; GaAs; PHEMT; W-band

Millimeter wave harmonic oscillators taking advantage of the push-push principle are demonstrated, allowing the use of the second harmonic of the oscillators to extend the applicable frequency range of standard pseudomorphic HEMTs to 94 and 140 GHz. Two configuration schemes are realized. An improved approach using a drain-connected pair of oscillators for efficient and compact circuit design and high output power is presented. Using this approach, oscillators at 94 GHz and 135 GHz were developed, with more than 0 dBm and -2 dBm output power and a high suppression of the fundamental signal of 38 dBc and 20 dBc, respectively. All MMICs were realized in a standard 0.13 ìm pHEMT technology using optical stepper lithography.