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为了实现对射频微电子机械系统(MEMS)波段威尔金森功分器电路的精确设计和优化,使达到的设计目标满足性能要求,采用先进设计系统(ADS)软件对工作频带为32~36 GHz的RF MEMS功分器进行了建模仿真,并得到初始的电路设计参数。通过使用结合柯西变异的改进的粒子群优化(PSO)算法对RF MEMS功分器的初始电路设计参数进行优化,采用矩阵实验室(MATLAB)软件和高频结构仿真器(HFSS)软件进行联合仿真实现优化过程,最终得到满足设计目标的RF MEMS功分器的性能曲线,以及对应的功分器优化后的电路设计参数。结果表明,优化后的RF MEMS功分器回波损耗比设计目标优化了2.5 dB,插入损耗优化了0.3 dB,隔离度达到了-20 dB的设计要求。最终通过仿真验证了改进的PSO算法能够快速有效地对RF MEMS功分器的电路参数进行优化达到RF MEMS功分器设计的性能要求。
In order to achieve the precise design and optimization of the Wilkinson power divider circuit in the RF MEMS band and meet the performance requirements, the advanced design system (ADS) software is applied to the frequency band of 32 to 36 GHz The RF MEMS power splitter was modeled and the initial circuit design parameters were obtained. The initial circuit design parameters of the RF MEMS power divider were optimized by using an improved Particle Swarm Optimization (PSO) algorithm that incorporates Cauchy’s mutation, using matrix software (MATLAB) and high-frequency structure simulator (HFSS) software Finally, the performance curve of the RF MEMS power divider that meets the design goal and the corresponding circuit design parameters of the power divider are optimized. The results show that the optimized RF MEMS splitter has a return loss that is 2.5 dB better than the design goal, the insertion loss is optimized by 0.3 dB and the isolation is up to -20 dB. Simulation results show that the improved PSO algorithm can quickly and effectively optimize the circuit parameters of the RF MEMS power divider to meet the performance requirements of the RF MEMS power divider.