Reflective Analog Predistorter with Tunable AM/AM Compensation and Constant AM/PM Conversion
This paper presents a novel analog predistortion linearizer with only tunable amplitude compensation, whose phase characteristics remain constant. Based on a reflective structure, including the Schottky diode and varactor diode, this linearizer implements a simple circuit structure. By tuning the bias voltage of the varactor diode, the AM/AM characteristic of the circuit can be adjusted, while the AM/PM conversion is basically unchanged over the input power range. In order to validate the proposed circuit structure, a linearizer is designed and simulated at 14-14.5 GHZ. Simulation results show that the amplitude compensation of the linearizer ranges from 4.9dB to 7.5dB, while the phase compensation remains around 4°. This linearizer is suitable for the linearization of Solid-state power amplifier (SSPA), and also can be utilized to realize the independent tuning of AM/AM compensation for the complex linearizer structure.
Authors
- Dalong Lv (ORCID: https://orcid.org/0000-0003-4243-722X)
- Hailin Deng (ORCID: https://orcid.org/0000-0002-0039-6696)
- Yi Zhang (ORCID: https://orcid.org/0000-0003-0248-7644)
- Benhua Ma (ORCID: https://orcid.org/0009-0004-0207-8052)
- Xiao Liu (ORCID: https://orcid.org/0000-0002-1751-8346)
- Dewei Zhang (ORCID: https://orcid.org/0000-0003-0332-1531)
Institutions
- PLA Information Engineering University (CN)
- Chinese Academy of Sciences (CN)
- Aerospace Information Research Institute (CN)
Publication Details
- Published
- 2024-10-18
- DOI
- https://doi.org/10.1109/icct62411.2024.10946616
- Primary Topic
- Radio Frequency Integrated Circuit Design
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China