Design and Fabrication of 2-6 GHz 25 W and 35 W Power Amplifiers

摘要

In this research the design and implementation of a 1.5-octave bandwidth 25 W and a 35 W power amplifier (PA) is presented. The acquired data from load-pull and source-pull simulations were used in the optimization process. First, a 25 W PA is designed, then a balanced topology is used to combine two of these single transistor amplifiers along with a gain block to achieve an output power of 35 W. Measurement results demonstrate that in the frequency band of 2-6 GHz, the single-transistor amplifier achieves a PAE of 40% or higher, an output power of more than 20 W and a minimum of 8 dB power gain. The balanced amplifier achieved an output power of greater than 35 W, 22 dB gain and an efficiency better than 20%.