Title :
High efficiency power combining of K band TWTAs for space communications
Author :
Dong, Yazhou ; Dong, Shiwei ; Zhu, Zhongbo ; Wang, Ying
Author_Institution :
Sci. & Technol. on Space Microwave Lab., Xi´´an, China
Abstract :
This paper presents a high efficiency power combining demonstration of two 100 W K-band TWTAs using a 4-port magic-T hybrid junction-based waveguide circuit. A low loss, amplitude and phase balanced, high power magic-T is designed for power combiner. Power combining efficiencies of greater than 90% and output power of more than 170W over a 0.6 GHz frequency band are successfully demonstrated. Such hybrid junctions can also be considered as elements within a corporate combining architecture for much higher power generating.
Keywords :
power combiners; space communication links; travelling wave amplifiers; waveguide junctions; K band TWTA; bandwidth 0.6 GHz; four port magic T hybrid junction; high efficiency power combining; hybrid junctions; space communication; waveguide circuit; Attenuators; Couplers; Microwave amplifiers; Phase shifters; Power amplifiers; Power combiners; Power generation; K band; Magic-T; Power combining; Space communication; TWTA;
Conference_Titel :
Microwave, Antenna, Propagation, and EMC Technologies for Wireless Communications (MAPE), 2011 IEEE 4th International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8265-8
DOI :
10.1109/MAPE.2011.6156262
