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The Windows ® program for designing Class E amplifiers


 
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This program simplifies the design of the single-ended Class E amplifier. Operation is intuitive and encourages "tuning" and exploration.
  • Each of the six design parameters can be specified using a freeform entry scheme.

  • Each of those parameters can be "tuned" by clicking on the "+1%" and "-1%" buttons; see the graphic below. This allows instant feedback regarding what parameter affects what schematic trait.

  • Each parameter has a default value and entries are checked to reduce the probability of ridiculous results.

  • Data are written automatically to a "last session" file at program exit time, allowing a simplified program restart.

  • Your design can be written to a file with a path and name of your choosing for later recovery. This is in addition to the automatically-written last session file.

  • You can also write a Spice file for checking real-world performance, to see the effect of adding additional parts or to see the output spectrum. This file uses an ideal switch (math model) with its "Ron" value set to that calculated by the program. You may drop in your own actual device if you know its parameters.

  • The schematic as delivered to the printer is of high quality and shows the node numbers used in the PSpice file.

  • The supplied file is a self-extracting installation routine. The program is installed in a standard manner. You may place its icon on the desktop as a shortcut.

This program uses the revised equations presented in "QEX" for Jan/Feb 2001. They are close to but seem to be more accurate than the more-commonly used set of equations presented in "RF Design" for Summer, 1980.

Alan Melia, G3NYK, has written a paper using a spreadsheet approach.

Greg Adams at CircuitSage has written a MathCad routine. (This is a PDF file.)




Note that 800x600 monitors may need to have the full-size image expanded.


The design screen:


The design screen
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Copyright © 2007 James L. Tonne. All rights reserved.