摘要
设计了一款用于毫米波汽车防撞雷达的高增益低旁瓣微带天线阵。为达到抑制旁瓣的目的,该天线阵采用凯泽贝塞尔函数进行幅值加权技术,相比于均匀平面阵,所设计天线阵有效地抑制了旁瓣电平(降低了5 d B)并保持了较高的天线增益。对天线阵进行了仿真优化,并制作了一个4×8元阵的天线原型,该阵列中心频率为24.125 GHz,增益为20.6 d Bi,旁瓣电平为-18.3 d B。
A high gain and low sidelobes microstrip antenna array was designed for millimeter-wave automotive anti-collision radar. Kaiser Bessel weighting method was used in order to suppress the sidelobe level effectively. The antenna aray designed dropped approximately 5 dB of sidelobe level and maintained a high antenna gain compared with the uniform planar array. We simulated and optimizated the antenna array, then fabricated a 4x8 element antenna array prototype. The measured results show that the center frequency of 4x8 antenna array is 24.125 GHz, the gain reaches 20.6 dBi and the sidelobe level gets to -18.3 dB.
出处
《微型机与应用》
2015年第4期37-39,共3页
Microcomputer & Its Applications
基金
桂林科技攻关项目(20130102-5)
关键词
微带天线阵
凯泽贝塞尔加权
低旁瓣
microstrip array antenna
Kaiser Bessel weighting
low sidelobe
