Title :
A novel diode-based predistortion linearizer for Ka-band power amplifier
Author :
Zhou, Rui ; Xie, Xiaoqiang ; Yan, Bo ; Li, Shaolan
Author_Institution :
Fundamental Sci. on EHF Lab., Univ. of Electron. Sci. & Technol. of China (UESTC), Chengdu, China
Abstract :
This paper presents a new miniaturized millimeterwave predistortion linearizer. The linearizer is capable of providing different combinations of amplitude and phase characteristic which can satisfy linearization requirements of different kinds of power amplifiers. The simulation results show that, by controlling the voltage bias of the two diodes, electrical length and characteristic impedance of the microstrip line, the linearizer can provide 5.9dB gain expansion and 25° phase expansion for use with travelling wave tube amplifiers (TWTAs) and can provide 7dB gain expansion and -26.5° phase expansion for use with solid state power amplifiers (SSPAs).
Keywords :
diodes; millimetre wave power amplifiers; Ka-band power amplifier; diode; diode-based predistortion linearizer; electrical length; gain expansion; microstrip line; miniaturized millimeterwave predistortion linearizer; phase characteristic; phase expansion; solid state power amplifier; travelling wave tube amplifier; voltage bias; Electron tubes; Impedance; Microstrip; Predistortion; Schottky diodes; Transmission line matrix methods;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230103
