Abstract:
This paper presents a digitally assisted analogpredistortion scheme for linearization of high power amplifier. Taking advantage of recent available digital signal process...Show MoreMetadata
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.
Published in: 2016 88th ARFTG Microwave Measurement Conference (ARFTG)
Date of Conference: 08-09 December 2016
Date Added to IEEE Xplore: 06 February 2017
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