Output-matching-circuit performance critical for PA design

Laursen, Soeren
October 2004
Portable Design;Oct2004, Vol. 10 Issue 10, p26
This article focuses on the importance of the output matching circuit's performance for any power-amplifier (PA) design. One aspect that is sometimes overlooked is the power dissipation in the output matching circuit. This power is lost in the capacitors, inductors, and other lossy elements that are part of the matching network. This dissipation loss degrades the efficiency of the PA and output power capability. The dissipation loss differs widely from the transducer gain. Different implementations of the output match result in different losses.


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