Where To Find This Example
AWR Version 14
AWR Version 13
Class E Amplifier
This is a basic Class E power amplifier designed using the procedures in "RF Power Amplifiers for Wireless Communications (Cripps/Artech), Chapter 6.
The waveforms show the typical Class E asymmetrical current pulse, and highly peaked voltage.
Tuning the drain capacitor shows a sharp tradeoff between efficiency and RF power. The PAE can approach 90%.
The RF power is nominally around 1 watt for 4.8v supply. It should be noted that the MESFET transistor used in this example has a power capability of about 3Watts if used in a conventional Class AB mode. This is the "power efficacy" issue, also discussed in the reference.
This is a good template project showing all the characteristics of the circuit that can be simulated.