Title :
Microwave Oscillator Design from Load Cycle Optimisation, Application to MMIC GaAs Mesfet Oscillator
Author :
Andre, Ph. ; Dienot, J.M. ; Llopis, O. ; Plana, R. ; Gayral, M. ; Graffeuil, J.
Author_Institution :
LAAS-CNRS, 7, Av. Colonel Roche, 31077 Toulouse Cedex (France) & Université Paul Sabatier, 118, Route de Narbonne, 31077 Toulouse (France). Tel (33)61.33.63.71; Fax (33)61.33.62.08.
Abstract :
A non linear microwave oscillator design and optimisation procedure, using the facilities of a commercial harmonic balance simulator, is presented. The oscillator is transformed to a reflection amplifier and the optimisation consists mainly of obtaining an optimal form of the intrinsic load cycle of the transistor used. This procedure is applied to the design of a monolithic microwave integrated oscillator. Simulations and experimental results are presented The oscillator exhibits a 11.8 GHz carrier frequency, with a 13.75 dBm output power and a single side band phase noise around ¿5 dBc/Hz at 100 kHz offset from the carrier.
Keywords :
Design optimization; Frequency; Gallium arsenide; MESFETs; MMICs; Microwave oscillators; Microwave transistors; Phase noise; Power generation; Reflection;
Conference_Titel :
Microwave Conference, 1994. 24th European
Conference_Location :
Cannes, France
DOI :
10.1109/EUMA.1994.337315
