Title :
A millimeter-wave predistortion linearizer for traveling wave tube amplifiers
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 :
In this paper, a millimeter-wave predistortion linearizer to satisfy linearization requirements of the traveling wave tube amplifiers (TWTAs) is proposed. By controlling the DC bias of the Schottky diode, the linearizer is capable of providing different combinations of the amplitude and phase characteristics for the TWTAs. The simulation results show 7.2dB gain compensation and 42° phase compensation can be achieved for the TWTAs with the linearizer. Good reflection characteristic of the linearizer can be obtained and any additional matching element is not required.
Keywords :
Schottky diodes; compensation; millimetre wave amplifiers; travelling wave amplifiers; DC bias control; Schottky diode; gain 7.2 dB; linearization requirements; matching element; millimeter-wave predistortion linearizer; phase compensation; traveling wave tube amplifiers; Admittance; Microstrip; Millimeter wave communication; Predistortion; Resistance; Schottky diodes;
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.2012.6229945
