A Novel Silicon High Voltage Vertical MOSFET Technology for a 100W L-Band Radar Application

The silicon vertical MOSFET RF power amplifier described in this paper is the industry's first to utilize high voltage vertical technology. Operating under pulse conditions of 200 musec pulse width and 10% duty cycle it delivers more than 100 W of peak power. Operating in Class AB with only 50 mA of bias current the device achieves more than 20 dB of gain and 47% power added efficiency at P1dB compression across 200 MHz of bandwidth at L-Band from 1.2 GHz to 1.4 GHz. The DC characteristics include a BVdss of 115 volts enabling high voltage operation with a 48 V power supply.