@article{10902/15704, year = {2018}, month = {7}, url = {http://hdl.handle.net/10902/15704}, abstract = {Since Nathan Sokal's invention of the class-E power amplifier (PA), the vast majority of class-E results have been reported at kilohertz and millihertz frequencies, but the concept is increasingly applied in the ultrahigh-frequency (UHF) [1]-[13], microwave [14]-[20], and even millimeter-wave range [21]. The goal of this article is to briefly review some interesting concepts concerning high-frequency class-E PAs and related circuits. (The article on page 26 of this issue, "A History of Switching-Mode Class-E Techniques" by Andrei Grebennikov and Frederick H. Raab, provides a historical overview of class-E amplifier development.)}, organization = {We acknowledge support, in part, by a Lockheed Martin Endowed Chair at the University of Colorado and in part by the Spanish Ministry of Economy, Industry, and Competitiveness (MINECO) through TEC2014-58341-C4-1-R and TEC2017-83343-C4-1-R projects, cofunded with FEDER.}, publisher = {Institute of Electrical and Electronics Engineers Inc.}, publisher = {IEEE Microwave Magazine, 2018, 19(5), 54-66}, title = {Microwave class-E power amplifiers: a brief review of essential concepts in high-frequency class-E PAs and related circuits}, author = {Popovic, Zoya and García García, José Ángel}, }