A broadband monolithic S-band class-E power amplifier

This paper describes what is believed to be the first successful design and fabrication of a highly efficient broadband monolithic class-E power amplifier that operates at S-band and employs a 0.3 /spl mu/m /spl times/ 1000 /spl mu/m pHEMT device. The amplifier measured performance shows a peak Power Added Efficiency (PAE) of 90% and a peak output power of greater than 23 dBm at 3.25 GHz.