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Digitally assisted analog predistortion technique for power amplifier

Publication Type : Conference Proceedings

Publisher : IEEE

Source : 88th ARFTG Microw. Meas. Symp., Austin, TX, USA, pp. 1–4.

Url : https://ieeexplore.ieee.org/abstract/document/7839732

Campus : Bengaluru

School : School of Engineering

Department : Electronics and Communication

Year : 2016

Abstract : This paper presents a digitally assisted analogpredistortion scheme for linearization of high power amplifier. Taking advantage of recent available digital signal processing solutions, the proposed method reduces hardware requirement of conventional analog predistorter by alleviating the need of Vector multiplier, hybrid 900 coupler and delay lines. Proposed method provides flexibility in terms of digitally compensation of delay, gain and phase control of signal. The proof-of-concept of method is presented for reducing odd-order intermodulation distortion (IMD). A better performance of 11-db reduction as compared to conventional analog predistorter in terms of 3rd IMD is achieved for two-tone test signal centered at frequency 2000 MHz and 2020 MHz.

Cite this Research Publication : K. Gumber, P. Jaraut, M. Rawat and K. Rawat, “Digitally assisted analog predistortion technique for power amplifier,” in 88th ARFTG Microw. Meas. Symp., Austin, TX, USA, pp. 1–4

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