A 12-W GaAs Read-Diode Amplifier at X Band

Multiple-mesa GaAs Read diodes have been incorporated in a single-stage microstrip amplifier module at X band. Stable CW amplification with an output power of 12 W at 4-dB gain and 23.5-percent power-added efficiency has been demonstrated. Design considerations for the amplifier circuits along with the microwave performance results are presented.