High-Efficiency, Class-E RF Power Amplifiers

Abstract

In this project, we developed several low-cost, high-efficiency RF power amplifiers. The final amplifier produced an output power of 1.1 kW, and was built with a pair of $4 MOSFETs in the style used for switching power supplies. The drain efficiency was 85% and the frequency was 7 MHz. This amplifier used a new switching amplifier class that we developed that combines the zero-voltage switching of Class E and the waveform control of Class F. We call the new class E/F. This new class has also been applied to make a CMOS IC power amplifier that has an output of 2W at 2.4 GHz with an efficiency of 41%.

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Document Details

Document Type
Technical Report
Publication Date
Apr 30, 2001
Accession Number
ADA390017

Entities

People

  • David Rutledge

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Capacitance
  • Efficiency
  • Electrical Engineering
  • Frequency
  • Jet Propulsion
  • Power
  • Power Amplifiers
  • Power Supplies
  • Push Pull Amplifiers
  • Radio Frequency Power
  • Short Circuits
  • Simulations
  • Sine Waves
  • Switching
  • Waveforms
  • Waves

Readers

  • Electrical Engineering
  • Electronics Engineering