采用非对称反射结构，具有独立可调增益和可调形状的模拟预失真线性器

IF 3 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-02-01 DOI:10.1016/j.aeue.2024.155620

Benhua Ma , Hailin Deng , Dewei Zhang , Hang Qian , Dalong Lv , Dongfang Zhou

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引用次数: 0

摘要

本文提出了一种具有独立可调增益转换和可调形状的反射模拟预失真（RAPD）线性器。基于由非线性支路和线性支路组成的非对称反射拓扑结构，实现了简单的电路结构。通过改变线性支路的偏置电压，实现了该线性器增益转换的独立调谐。同时，通过改变非线性支路中非线性阻抗匹配网络（NIMN）的偏置电压，可以调节线性器的幅值补偿形状。详细讨论了该线性化器的理论分析和整定过程。仿真结果与实测结果一致，验证了APD的可调性。此外，还利用APD对ku波段50w固态功率放大器进行了线性化处理。在10.7-12.7 GHz工作频段，在2db输出功率回退（OPBO）时，三阶互调（C/IM3）大于26.1 dBc。

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An analog predistortion linearizer with independently tunable gain and adjustable shape using an asymmetric reflective structure

This paper presents a novel reflective analog predistortion (RAPD) linearizer with independently tunable gain conversion and tunable shape. Based on an asymmetric reflective topology consisting of a nonlinear branch and a linear branch, this linearizer achieves a simple circuit structure. Independent tuning of gain conversion of this linearizer is realized by changing the bias voltage of the linear branch. Meanwhile, the shape of the amplitude compensation of the linearizer can be adjusted by changing the bias voltage of the nonlinear impedance matching network (NIMN) in the nonlinear branch. The theoretical analysis and tuning process of this linearizer are discussed in detail. The tunability of the APD is verified by simulation and measurement results, which are in agreement. Furthermore, a Ku-band 50 W solid state power amplifier (SSPA) is linearized by the APD. The third-order intermodulation (C/IM3) is greater than 26.1 dBc at 2 dB output power backoff (OPBO) over the operating band of 10.7–12.7 GHz.

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来源期刊

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.