摘要
提出了一种新型的小型化方环形缝隙圆极化（CP）平面印刷天线。采用缝隙加载技术在环形缝隙的边上加载u形缝隙以延长电流路径，通过改变激励的本征模式实现天线的小型化；在馈电微带线相邻缝隙上加载窄金属带条并接地以产生微扰，激励相位差90°的差分正交简并模，从而实现圆极化。对提出的天线进行优化设计，获得了低于原型天线18％的谐振频率，实现了天线的小型化；同时该天线具有良好的圆极化特性。
A Novel miniature printed ring slot antenna with circularly polarized （CP） radiation is presented in this paper. U sharped slot loaded technology is applied in the proposed prototype to lengthen the current patch for antenna miniaturization. A narrow metallic strip connecting the ground is added to the slot next to the microstrip line feeding to introduce perturbation to the antenna, which a pair of perpendicular mode with 90°phase difference is achieved for CP radiation. With optimized design, the presented antenna achieves a lower resonant frequency of 18% compared to the prototype antenna. In addition to the miniaturization obtained, well CP performance is achieved of the presented antenna.
出处
《通信对抗》
2010年第3期56-59,共4页
Communication Countermeasures
关键词
小型化
圆极化
缝隙天线
印刷天线
miniature, circulary polarized, slot antenna, printed antenna.
