Title :
Tunable diode-based predistortion linearizer for power amplifier with a phase expansion or compression at millimeter-wave frequency
Author :
Dawei Li ; Xiaoqiang Xie ; Bo Yan ; Ruimin Xu ; Xuyang Zhang
Author_Institution :
EHF Key Lab. of Fundamental Sci., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
We propose an analog predistortion linearizer based on diode at millimeter-wave frequency. Taking advantage of tuning the bias of the diodes, the linearizer is capable of providing different combinations of the amplitude and phase characteristics for the use of solid-state power amplifier (SSPA) and travelling wave tube amplifier (TWTA). The experiment validation shows that, about 6.1 dB gain expansion and 20 ° phase compression can be compensated for SSPA and about 3.4 dB gain expansion and 12 ° phase expansion can be obtained for use with TWTA at millimeter-wave frequency.
Keywords :
linearisation techniques; millimetre wave power amplifiers; travelling wave amplifiers; analog predistortion linearizer; millimeter-wave frequency; phase compression; phase expansion; solid-state power amplifier; travelling wave tube amplifier; tunable diode-based predistortion linearizer; Gain; Junctions; Millimeter wave technology; Predistortion; Radio frequency; Schottky diodes;
Conference_Titel :
Communication Problem-Solving (ICCP), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-4246-6
DOI :
10.1109/ICCPS.2014.7062234
