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Design of a low-supply-voltage high-efficiency class-E voltage-controlled MMIC oscillator at C-band

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3 Author(s)
F. Ellinger ; Lab. of Electromagn. Fields & Microwave Electron., Swiss Federal Inst. of Technol., Zurich, Switzerland ; U. Lott ; W. Bachtold

In this paper, a monolithically integrated voltage-controlled class-E tuned oscillator for C-band has been designed and measured. Large-signal optimization was performed using analytically calculated starting values to reach high efficiencies at ultra-low supply voltages down to 0.9 V. The range of the tuning voltage is from 0 to the supply voltage. With a supply voltage of 1.8 V, an output power of 6.5 dBm, an efficiency of 43%, and a tuning range of 150 MHz is achieved at a center frequency of 4.4 GHz. With a supply voltage of only 0.9 V, the efficiency is 36%, with an output power of 1.1 dBm,and a tuning range of 80 MHz at a frequency of 3.6 GHz. Chip size is less than 1 mm2

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:49 ,  Issue: 1 )