Application Note

Application Note: 500W, Class E 27.12 MHz Amplifier Using A Single Plastic MOSFET

Source: Microsemi Power Products Group, Formerly Advanced Power Technology RF

By Richard Frey, P.E.

In this paper, we report on the design and evolution of a 500W, 27 MHz Class E amplifier. It doubles the operating frequency of previous high efficiency amplifiers using MOSFET transistors in the TO-247 package. Device criteria, circuit design, and amplifier performance characteristics are presented and compared to a HEPA computer model.

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