基于最大功率传输效率法的聚焦天线设计

Millimeter-wave Antenna Design Based on Maximum Power Transfer Efficiency Method

采用传统方法设计天线时,往往存在能量转换效率较低、能量浪费严重的问题,但大部分优化方法又都有操作过于复杂的缺陷。本文提出了一种采用最大功率传输效率(MMPTE)方法设计的毫米波微带天线阵列。该天线由4×4个矩形贴片辐射单元和微带线馈电网络组成,并通过MMPTE来优化天线馈电网络的相位和幅度。本文所设计的天线阵列具有结构简易、辐射效率高、成本低廉、体积较小、性能良好等优点,可根据需求应用于不同的Ka波段毫米波天线系统。

When designing antennas using traditional methods,there are often problems of low energy conversion efficiency and serious energy waste,but most optimization methods have the disadvantage of overly complex operation.This letter presents a millimeter-wave microstrip antenna array designed using the maximum power transfer efficiency(MMPTE)method.The antenna consists of 4x4 rectangular patch radiating units and microstrip line feed network,the phase and amplitude of the antenna feed network are optimized by MMPTE.The antenna array designed in this paper has the advantages of simple structure,low cost,small size,high radiation efficiency and good performance,which can be applied to different Ka-band millimeter wave antenna systems according to the demand.