Title :
Measurement and Modeling of Two Tone Transfer Characteristics of High Power Amplifiers
Author :
Yang, Youngoo ; Yi, Jaehyok ; Kim, Bumman ; Kim, Youngsik ; Park, Myungkyu
Author_Institution :
Department of Electronic and Electrical Engineering and Microwave Application Research Center, Pohang University of Science and Technology, San 31 Hyoja-Dong Kyungbuk, Namku Pohang 790-784, Korea
Abstract :
The high power amplifier with class AB operation has a large memory effect and high non-linearity. The usual AM-AM and AM-PM data cannot properly describe the large distortion characteristics. We present an accurate block model of the amplifier based on the two tone transfer characteristics. The measurement setup of the two tone transfer characteristics are described. The measured and modeled amplitude and phase data of the two tone harmonics versus input power level are presented. This behavioral model will be very useful for the design of a predistortion linearizer of high power amplifiers and for the nonlinear system simulation with a large memory effect.
Keywords :
Distortion measurement; Frequency; Gain; High power amplifiers; Phase measurement; Power amplifiers; Power generation; Power measurement; Power system modeling; Radiofrequency amplifiers;
Conference_Titel :
Microwave Conference, 2000. 30th European
Conference_Location :
Paris, France
DOI :
10.1109/EUMA.2000.338643
