摘要
在介绍分谐波混频器的原理基础上,提出一种以粒子群算法作为全局搜索算法,以性能参数作为评估的混频器电路优化方法,利用ADS软件设计出一种本振为23 GHz,射频为92～94 GHz下的变频器电路,应用CST软件优化脊波导微带过渡结构,实现了W波段的信号到混频器射频端的引导。优化算法可以快速得到优化结果,仿真结果表明该下变频器的变频差损小于15dB,1dB压缩点较高,具有良好的线性度。
This paper presents principles of a down-converted mixer for four sub-harmonic and proposes a particle swarm opti- mization algorithm as a global search algorithm, and the performance parameters is used as the assessment of the mixer circuit opti- mization method. The mixer circuit is designed by ADS software ,the LO and RF frequencies are 23 GHz ,92 -94 GHz respectively. The structure of ridge waveguide to microstrip transitions is optimized by simulation software CST, and W-band signals are directed to mixer RF side. The optimization algorithm can quickly get optimal results. The simulation results show that this mixer achieves higher 1 dB compression point,loss of frequency conversion which is less than 15 dB and good linearity.
出处
《仪表技术与传感器》
CSCD
北大核心
2012年第12期109-112,共4页
Instrument Technique and Sensor
基金
国家自然科学基金项目(41075025)
公益性行业(气象)科研专项(200906053)
2011年江苏省研究生科研创新计划项目0782002072(CXZZ110618)
关键词
分谐波混频器
下变频器
粒子群算法
脊波导微带过渡
sub-harmonic mixer
down-converted mixer
particle swarm optimization
ridge waveguide to microstrip transitions
作者简介
张银胜（1975-），讲师，博士研究生，主要研究方向为电子与通信系统设计，雷达信号处理等。E—mail：yorkzhang@nuist．edu.cn
