摘要
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。
To realize the precise design and optimization of the Ka-band RF micro-electromechanical system（MEMS）Wilkinson power divider circuit and achieve the design goal to meet the performance requirements,the modeling and simulation of the RF MEMS power divider with the operating frequency band of 32-36 GHz were carried out by using the advanced design system（ADS）software,and the initial circuit design parameters were obtained.By using the improved particle swarm optimization（PSO）algorithm combined with Cauchy mutation,the initial circuit design parameters of the RF MEMS power divider were optimized.The optimization process was implemented by using matrix laboratory（MATLAB）software and high frequency structure simulator（HFSS）software joint simulation method.Finally,the performance curves for the design requirement of the RF MEMS power divider and the optimized circuit design parameters were obtained.The results show that the return loss of the optimized RF MEMS power divider is improved 2.5 dB,the insertion loss is improved 0.3 dB,and the isolation reaches the design requirement of-20 dB.Finally,the simulation results verify that the improved PSO algorithm can quickly and efficiently optimize the circuit parameters of the RF MEMS power divider,and achieve the required performances of the design of the RF MEMS power divider.
出处
《微纳电子技术》
北大核心
2017年第4期254-260,272,共8页
Micronanoelectronic Technology
基金
微细加工光学技术国家重点实验室基金资助项目(KFS-4)
