摘要
平面阿基米德螺旋天线是一种应用广泛的典型宽带天线,具有低轴比、宽频带等优良特性。针对其低频特性较差的特点,设计制作了一种末端加载电阻的新型平面阿基米德螺旋天线。该天线采用同轴巴伦馈电,加装反射背腔,从而达到小型化的目的。经过测量,天线在低频范围内具有良好的驻波比和轴比特性,在整个频带内具有较好的增益,起到了扩展低频频带的作用,能够满足工程使用的要求。
A novel planar Archimedean spiral antenna is designed by means of adding discrete resistance loading to the spiral structure,aiming to improve the performance of traditional planar Archimedean spiral antenna at its lower frequency band. The miniaturization of the planar Archimedean spiral antenna is realized by designing a coaxial Balun feed and a shallow reflecting cavity. According to the measurement,the antenna keeps good characteristics of VSWR and ratio at its lower frequency band,which meets the requirement of engineering applications.
出处
《无线电通信技术》
2015年第1期49-51,55,共4页
Radio Communications Technology
基金
国家自然科学基金项目(61201121)
陕西省自然科学基金项目(2014JM8305)
关键词
平面阿基米德螺旋天线
电阻加载
小型化
planar Archimedean spiral antenna
resistance loading
miniaturization
