Title :
A Design of Predistortive High Power Amplifier using Carrier Complex Power Series Analysis
Author :
Yun, Sang-Young ; Jeong, Se-Woong ; Jeong, Yong-Chae ; Kim, Chul-Dong
Author_Institution :
Sewon Teletech, Anyang-Si, Kyounggi-Do, Korea
Abstract :
In this paper, a new carrier complex power series for linearizing the distortion effects of a HPA (High Power Amplifier) is proposed. Amplitude (AM-to-AM) and phase(AM-to-PM) nonlinear characteristics of HPA are combined to generate carrier complex power series. Inverse carrier complex power series of predistortor is also proposed. The fabricated HPA of IMT- 2000 band with a measured gain and P1dB are 34.06dB and 35.4dBm. With proposed series, C/I (Carrier to Intermodulation) ratio of HPA is improved by 17.01dB(@Pout = 25.43dBm/tone) with 2-tone at 2.1375GHz and 2.1425GHz.
Keywords :
Frequency; High power amplifiers; Information analysis; Nonlinear distortion; Nonlinear equations; Phase distortion; Power amplifiers; Power generation; RF signals; Voltage;
Conference_Titel :
Microwave Conference, 2001. 31st European
Conference_Location :
London, England
DOI :
10.1109/EUMA.2001.338899
