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The paper presents a compact power amplifier (PA) topology for reducing quiescent current and current consumption under power backoff operation. The final stage of the PA consists of two parallel transistor cells designed for two different output power operations. By switching between the two cells, terminated with different load impedances, through a(More)
With the recent rise of interest in multimedia applications, we have witnessed the emergence of more and more video-conferencing systems such as Communique!, the MBONE suite of tools (nv, vic, vat, wb)[1-3], Isabel[4], etc. These applications provide tools for video, audio and text information exchanging in the conference. They also provide a whiteboard for(More)
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