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In this paper, an experimental investigation of high-frequency Class-E power amplifier with shunt filter is presented. Using of a shunt LC filter in the load network instead of a series LC tank used in conventional Class-E power amplifier allows the maximum operating frequency and second-harmonic suppression level to be increased compared to conventional Class-E power amplifier. The parasitic resistive...
This paper presents analytical expressions for the Class-E/F power amplifier with a nonlinear shunt capacitor for satisfying the nonoptimum condition at 50% duty ratio. The design parameters for achieving the nonoptimum condition are expressed as a function of the phase shift and dc supply voltage. The Class-E/F amplifier with nonoptimum condition increases one design degree of freedom...
This paper describes development of a High efficiency HF power amplifier. We fabricated a new wideband power amplifier operating at short wave band (3 MHz-26 MHz) using class-E amplifier and obtained a high output power efficiency of 74% at 25.5 MHz that is a target performance by controlling the shunt capacity for wideband operation. In addition, the low loss characteristic of about 0.4 dB and under...
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