Efficient, Broadband Circuit Performance of Millimeter-Wave IMPATT-Diode Power Amplifiers

A new technique for evaluating and optimizing the operating circuit efficiency of IMPATT-diode amplifiers and oscillators is presented. This design approach has been used to realize a reliable, Single diode Q-band IMPATT amplifier producing 1.5 Watts output from 43.5 to 45.5 GHz with 5 dB gain.