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A Fast CMOS Self-Oscillating Modulator for RF Power Amplifier

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2 Author(s)
Xin Jie Wang ; Carleton Univ., Ottawa ; Kwasniewski, T.

This paper presents a fast CMOS self-oscillating modulator for RF power amplifier. This modulator has been designed in 0.18-mum CMOS technology which occupies an area of 1.5times2 mm2 and consists of an envelope detector, an envelope amplifier, a fast comparator and an output buffer. The modulator can be applied for both EERPA and DSPA. Simulation results show that the modulator achieves efficiency > 81%, the highest output voltage is close to 1.7V, current >100 mA.

Published in:

Electrical and Computer Engineering, 2007. CCECE 2007. Canadian Conference on

Date of Conference:

22-26 April 2007