IEICE Electronics Express
Online ISSN : 1349-2543
LETTER
A fully integrated pulse width modulator for Class-S power amplifiers
Bonghyuk ParkJaeho JungKwangchun Lee
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2013 Volume 10 Issue 4 Pages 20120929

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Abstract

A fully integrated pulsewidth modulator for Class-S power amplifiers is presented. It consists of a triangular signal generator, a comparator and output buffer. The HBT BiCMOS design of PWM circuit is applied to the LTE frequency range, which converts digitally modulated 955MHz RF carrier with 2.87GHz sampling clock. This PWM shows an EVM 6.6%, a differential output voltage swing 1.35Vp-p with 62.7mA dissipating at 3.3V power supply.

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© 2013 by The Institute of Electronics, Information and Communication Engineers
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