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A Two-Stage Power Amplifier with a Latch-Structured Pre-Amplifier  

Choi Young-Shig (부경대학교 전자컴퓨터정보통신공학부)
Choi Heyk-Hwan (부경대학교 전자컴퓨터정보통신공학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.9, no.2, 2005 , pp. 295-300 More about this Journal
Abstract
In this paper we have designed a two-stage Class I power amplifier operated at 2.4CHz for Class-1 Bluetooth application. The power amplifier employs class-I topology to exploit its soft-switching property for high efficiency. The latch-structured pre-amplifier with amplifiers makes its output signal as sharp as possible for soft switching of the next power amplifier. It improves the overall efficiency of the proposed power amplifier. It shows 65.8$\%$ PAE, 20dB power gain and 20dBm output power.
Keywords
Bluetooth; CMOS; Class-E; High efficiency; Power amplifier;
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