Simulated Annealing Particle Swarm Optimization for High-Efficiency Power Amplifier Design
Simulated Annealing Particle Swarm Optimization for High-Efficiency Power Amplifier Design
复制标题
用于高效功率放大器设计的模拟退火粒子群优化
DOI：
10.1109/tmtt.2021.3061547
复制
发表时间：
2021-05-01
影响因子：
4.3
通讯作者：
He, Songbai
中科院分区：
文献类型：
--
作者：
Li, Chuan;You, Fei;He, Songbai
本文提出了一种基于面向优化的高效率功率放大器自动化设计方法。分析了粒子群优化算法在电子设计自动化工具中设计功率放大器的优势，并将其与模拟退火算法相结合，形成模拟退火粒子群优化算法（SA-PSO）。本文将传统粒子群算法中的完全非弹性碰撞替换为完全弹性碰撞，通过减少动能消耗来提高搜索能力。定义了阶梯式适应度函数，避免了单频点处的性能坑;引入“失回”概念，解决了仿真中的不收敛问题。基于改进的SA-PSO算法，设计了宽带10 W和三频6 W功率放大器。在0.8 ~ 3GHz频段，宽带10 W功率放大器的平均漏极效率（DE）为62.5%，输出功率为41.2dBm;三频段6 W功率放大器在3.35-3.55-/5.75-5.95-/7.65-7.95-GHz频段分别实现了平均57.4%/47.9%/47.3% DE和37.7-/38.3-/ 37.4 dBm输出功率，而大多数阻带的增益达到小于0 dB。采用数字预失真技术，邻道功率比（ACPR）可达-45dBc以下。
In this article, a method for design automation high-efficiency power amplifiers (PAs) based on an optimizationoriented is proposed. The advantages of using particle swarm optimization to design PAs in electronic design automatic tools are analyzed, and then, simulated annealing is combined to form simulated annealing particle swarm optimization (SA-PSO). In this article, the perfectly inelastic collision used in conventional PSO is replaced by the perfectly elastic collision to improve the searching ability through reducing kinetic energy consumption. A stepped fitness function is defined to avoid the performance pit at a single-frequency point, and the concept "missing and returning" is introduced to solve the nonconvergence problem in simulation. Based on the improved SA-PSO algorithm, a broadband 10 W and a triband 6-W PA are designed. The broadband 10-W PA achieves an average drain efficiency (DE) of 62.5% and an output power of 41.2 dBm in the 0.8-3-GHz frequency band, respectively; the triband 6-W PA achieves an average of 57.4%/47.9%/47.3% DE and 37.7-/38.3-/ 37.4 dBm output power in 3.35-3.55-/5.75-5.95-/7.65-7.95-GHz frequency bands, respectively, while the gains of most stopbands reach less than 0 dB. With digital predistortion technology, the adjacent channel power ratio (ACPR) can reach less than -45 dBc.