Title :
A type of TWTA predistortion linearizer for space telecommunication applications
Author :
Hu, Xin ; Wang, Gang ; Luo, Jirun ; Wang, ZiCheng
Author_Institution :
Key Lab. of High Power Microwave, Chinese Acad. of Sci., Beijing, China
Abstract :
This paper presents a predistortion linearizer for space telecommunication applications with simple circuit structure. The linearizer reported here, which is capable of providing a good control for the amount of gain expansion over input power dynamic range, can compensate the TWTA saturation response better than that of a conventional linearizer. The improvement of about 14.5 dB C/I3 at −3dB Output-Power-Backoff(OPBO) in the frequency range of 8.38∼8.58GHz can be reached by the linearizer.
Keywords :
Circuits; Delay; Dynamic range; FETs; Linearity; Power amplifiers; Predistortion; Satellites; Schottky diodes; Telecommunication control; Traveling Wave Tube Amplifiers; nonlinear distortion; predistortion linearizer; space telecommunication;
Conference_Titel :
Wireless Communications, Networking and Information Security (WCNIS), 2010 IEEE International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
978-1-4244-5850-9
DOI :
10.1109/WCINS.2010.5541892
