Title :
Narrowband amplifier with excellent power combining efficiency
Author :
Song, K. ; Fan, Y. ; He, Z.
Author_Institution :
Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
Based on a coaxial waveguide power-dividing/combining circuit, a four-device solid-state power amplifier with excellent power combining efficiency is presented. The fabricated power amplifier combining four monolithic microwave integrated circuit power amplifiers shows a 13-16.65 dB small-signal gain over a wide bandwidth of 7-13.5 GHz. The measured maximum output power at 1 dB compression is 25.4 dBm at 11 GHz, with a power-combining efficiency of 91%.
Keywords :
MMIC; coaxial waveguides; power amplifiers; power combiners; bandwidth 7 GHz to 13.5 GHz; coaxial waveguide; fabricated power amplifier; frequency 11 GHz; gain 13 dB to 16.65 dB; monolithic microwave integrated circuit; narrowband amplifier; power-combining efficiency; power-dividing/combining circuit; solid-state power amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20071178
