A design approach and test data for a broadband high-power amplifier monolithic microwave integrated circuit (MMIC) developed using MSAG MESFETs with multilevel-plating technology are presented. A low-loss matching design technique was used in the development of a two-stage amplifier. The UHF/L/S-band amplifier has exhibited greater than 12-W power output and better than 22% power-added efficiency over the 0.7-2.7-GHz frequency range. To our knowledge, these power results represent the state-of-the-art in multioctave high-power MMIC amplifiers
Published in:
Microwave Theory and Techniques, IEEE Transactions on
(Volume:55
,
Issue:
2
)
Date of Publication: Feb. 2007