摘要
根据经典理论,对于线极化矩形贴片天线,其主模电场强度在平行于非辐射边的中心线上为零。如果沿此中心线对微带天线加载电阻,对其辐射性能影响不大,然而对散射性能则有很大改善。通过引入一种阻抗加载技术和接地板开槽技术使微带天线的RCS大幅减缩,结合小型化技术,微带天线的RCS得到进一步减缩,而且天线外形尺寸也比原天线有所减小。这样,就同时兼顾了微带天线的辐射性能和散射性能。
According to the classical theory, for a linearly polarized rectangular microstrip antenna , the intensity of its electric field of the fundamental mode is zero along the center line which is parallel to the nonradiating edge. If chip resistance is loaded along the center line, the RCS will be reduced apparently and the radiation characters keep unchangeable. In this paper, a method by loading the antenna with chip resistance and slots in the ground to reduce the RCS of the antenna is introduced, accompanied with the miniaturization chnique,the RCS of the antenna is obviously reduced,the size of the antenna is smaller than before. Thus,the radition characters and excellent scattering characters are obtained at the same time.
出处
《现代电子技术》
2008年第13期15-18,共4页
Modern Electronics Technique
关键词
微带天线
RCS减缩
阻抗加载
接地板开槽川
型化
microstrip antennas
RCS reduction
loaded with resistance
loaded with slots in the ground
miniaturization
