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What Can Class-E Do for Me? Typically, Class-E amplifiers (see References 1-6) can operate with power losses smaller by a factor of about 2.3, as compared with conven-tional Class-B or -C amplifiers using the same transistor at the same fre-quency and output power.
The purpose of this document is to provide a comprehensive guide to the design of a class-E RF power amplifier for magnetic resonance wireless charging based on the Air Fuel baseline system specification (BSS).
published low-order Class-E circuit, a transistor performs well at frequencies up to about 70% of its frequency of good Class-B operation (an unpublished higher-order Class-E circuit operates well up to about double that frequency). This paper covers circuit operation, improved-accuracy explicit design equations
The VK1SV classy Class-E 160 m AM transmitter Dimitris Tsifakis, VK1SV/SV1DET Version 1. I will document here my adventures in the Class-E land.
In pulsed transmitters, a highly ef-ficient switch mode power amplifier (SMPA) is used in conjunction with a pulse modulator to achieve high efficiency linear amplification. Digital imple-mentation of the modulator enables wide bandwidth for the signal generation path and improves the level integration.
From vintage tube-based gear, to military surplus, to modern, ultra-efficient FET-based Class E transmitters, Amplitude Modulation (AM) offers the experimenter, homebrewer, and radio restoration buff great opportunities to learn, build, and enjoy radio.
Amplitude Modulation (AM) is essentially a mixing process where the audio "modulating" signal is mixed with the radio frequency "carrier". The resulting signal actually consists of three distinct components: the carrier, the upper sideband (carrier frequency plus the audio modulating frequency) and the lower sideband (carrier frequency minus ...
