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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The echo amplitude of the HVPA (a) without and (b) with the power MOSFET linearizer and the spectrum of the HVPA (c) without and (d) with the power MOSFET linearizer when three-cycle 26 dBm input power was applied.