【作者】 刘静； 钟顺时； 韩荣苍；

【Author】 LIU Jing;ZHONG Shunshi;HAN Rongcang;School of Communication and Information Engineering, Shanghai University;School of Electron.& Inform.Eng., Shanghai University of Electric Power;Department of Physics and Electronics, Linyi University;

【机构】 上海大学通信与信息工程学院； 上海电力学院电子与信息工程学院； 临沂大学物理与电子科学系；

【摘要】 提出了一种高增益双极化介质谐振器天线(DRA)。该天线的端口1采用放置在DR正下方的H形缝隙馈电,端口2采用威尔金森功分器和180°相移器对两个对称放置的缝隙进行等幅反相馈电。由于工作于高阶模式,该DRA的增益显著提高,两个极化在中心频率10.2GHz的增益分别达到10dBi和9.9dBi。天线的端口隔离度高于30dB,端口1和端口2的交叉极化电平分别低于-32dB和-23 dB。两端口的S11≤10 dB阻抗带宽各达19.4%和15.37%。更多还原

【Abstract】 A high-gain dual-polarized(DP) dielectric resonator antenna(DRA) is introduced in this article. The Port 1 of this DRA is fed by a H-shaped slot placed directly below the DR. For its Port 2, a Wilkinson power divider and a 180° phase shifter are adopted to feed two symmetrically-placed slots with equal amplitude and opposite phase. Since the DP DRA is working on a higher order mode, its gain is improved significantly. The antenna gain at center frequincy reaches 10 dBi and 9.9 dBi for two polarization, respectively. Its port isolation exceeds 30 dB.The cross-polarization level for Port 1 is –32 dB and for Port 2-23 dB.The impedance bandwidth of the two ports for S11≤10 dB is 19.4% and 15.37%, respectively.更多还原