【作者】 王晶； 李林翠； 任冬梅； 赵鹏；

【Author】 WANG Jing;LI Lin-cui;REN Dong-mei;ZHAO Peng;Institute of Electronic Engineering, China Academy of Engineering Physics;

【机构】 中国工程物理研究院电子工程研究所；

【摘要】 提出了一种在UHF频段的宽带高增益全向天线。单元天线采用柱状天线,在柱状天线的外导体上开环状缝隙,为了增加带宽,在缝隙两端接柱状阵子臂,外导体和阵子臂之间采用碗状结构以实现平滑过渡。该单元天线在500MHz到730MHz的频段内驻波小于2.5,水平全向,水平方向增益大于1d B。为了提高增益,将两个单元天线进行进行组阵,合适选择距离,最终天线阵在500MHz到670MHz的频段内水平方向增益大于3d B,驻波小于2.5。更多还原

【Abstract】 In this paper, a broadband high-gain Omni-directional UHF Antenna is proposed. The antenna unit is the cylindrical antenna with the annular slot on the outer conductor. In order to increase the bandwidth, the cylindrical dipole arms are connected with both sides of the gap, and the bowl shaped structures are used between the outer conductor and the dipole arm to realized the smooth transition. The VSWR of the antenna unit is less than 2.5 and the horizontal direction is more than 1 d B in the frequency band of 500 MHz to 730 MHz. The antenna array is composed of two antenna units with the appropriate distance for the purpose of increasing the gain. Finally, the VSWR of the antenna array is less than 2.5 and the horizontal direction is more than 3 d B in the frequency band of 500 MHz to 670 MHz.更多还原