摘要
提出了一种X波段宽带低副瓣微带阵列天线的设计方法。在考虑互耦效应的影响下,通过改进微带贴片形状与优化贴片尺寸,有效地改善了天线单元阻抗特性。采用不等幅功分器设计微带形式的馈电网络,得到了16×16元微带阵列天线。设计结果表明,在所要求的9.5GHz^10.5GHz工作频段内,该阵列天线电压驻波比小于1.6,增益大于27.5d B,方位面与俯仰面副瓣电平均优于25d B。
Method of designing an X- band broadband low- sidelobe microstrip array antenna is proposed. The impedance characteristic of the antenna element is improved by modifying microstrip paster form and optimizing paster size on basis of taking mutual coupling effect of element into account. The fed network in microstrip form is designed by using unequal amplitude power divider to obtain microstrip array antenna with 16 × 16 elements. The designed results show that the VSWR（ voltage standing wave ratio） of array antenna is less than 1. 6,gain greater than 27. 5d B,sidelobe level better than 25 d B in both azimuth and elevation plane in the required operational band（ 9. 5GHz ~ 10. 5GHz）.
出处
《火控雷达技术》
2015年第4期84-87,100,共5页
Fire Control Radar Technology
基金
装备预先研究项目(40405040301)
关键词
X波段
宽频带
低副瓣
微带阵列天线
X-Band
broadband
low-sidelobe
microstrip array antenna
