【作者】 赵波； 王新稳； 龚成；

【Author】 Zhao Bo1 Wang Xin Wen1 Gong Cheng2 (School of Electronic Engineering, Xidian University, Xi’an 710071)1;(The 50TH Research Institute of China Electronics Technology Group Corporation, Shanghai 200063)2

【机构】 西安电子科技大学电子工程学院； 中国电子科技集团公司第五十研究所；

【摘要】 本文提出了一种宽带圆极化缝隙天线,用L型的微带线进行激励,通过对贴片单元切角和开L型缝隙来获得宽带圆极化。这样的安排可以激励起两个幅度相等相位相差90°的线极化波从而产生圆极化波。通过优化调整L型缝隙的大小和其它的相关参数可以得到很宽的轴比带宽和阻抗带宽。在此基础上对天线进行了参数优化和实物制作,仿真得到的3-dB轴比带宽和实测的阻抗带宽(VSWR<2)分别达到了68.4%和62%。更多还原

【Abstract】 A broadband circularly polarized (CP) L-shaped slot antenna is presented. The antenna is excited by L-shaped microstrip feed line. Wideband CP is obtained by L-shaped slot and truncating one of the corners of the antenna element. This arrangement introduces orthogonal components with quadrature phase difference to excite circularly polarized wave. The wide axial-radio (AR) and impedance bandwidth are achieved by adjusting the L-shaped slot and relative parameters. The proposed antenna has been optimized and fabricated, and the simulated and measured results demonstrate a 3-dB AR and impedance bandwidth (VSWR<2) around 68.4% and 62% respectively.更多还原