太赫兹科学与电子信息学报, 2018, 16 (6): 1048, 网络出版: 2019-06-10
一种具有双缝隙结构的双频宽带MIMO天线
A dual-band broadband MIMO antenna with double gap
摘要
设计一种双频宽带多输入多输出(MIMO)天线。天线采用微带线耦合馈电,在天线的表面开有圆环形缝隙,把宽缝隙和窄缝隙结合到一起,因此在辐射体上同时存在2种缝隙结构;天线采用双面结构,带宽范围为1.7~2.33?GHz和3.2~3.9?GHz,2个频带的带宽分别为630?MHz和700 MHz,可用于移动通信的DCS(1?710~1?880 MHz)、PCS(1 850~1 990 MHz)、UMTS(1 920~2 170 MHz)以及WIMAX(3.3~3.6 GHz)。天线在低频段的最大增益为3.6 dB,在高频段的最大增益为5.1 dB,隔离度在-20 dB以下,符合MIMO天线的设计需求。
Abstract
A dual-band broadband Multiple-Input Multiple-Output(MIMO) antenna is proposed. The antenna is coupled fed by microstrip line and has an annular aperture on the surface. The wide gap and narrow gap is combined together, so there are two kinds of gap structures on the radiator at the same time. The antenna has a double-sided structure. The bandwidth range of the antenna is 1.7-2.33 GHz and 3.2-3.9 GHz, the bandwidth of the two frequency bands is 630 MHz and 700 MHz respectively, which can be used for DCS(1?710-1?880?MHz), PCS(1?850-1?990?MHz), UMTS(1?920-2?170 MHz) and WIMAX (3.3-3.6?GHz) in the mobile communication. The maximum gain of the antenna is 3.6 dB in the low frequency band, 5.1 dB in the high frequency band, and the isolation is below -20 dB, which conforms to the design requirements of the MIMO antenna.
刘志伟, 结顺利, 吴喜亮, 叶芃, 胡承, 丁志清. 一种具有双缝隙结构的双频宽带MIMO天线[J]. 太赫兹科学与电子信息学报, 2018, 16(6): 1048. LIU Zhiwei, JIE Shunli, WU Xiliang, YE Peng, HU Cheng, DING Zhiqing. A dual-band broadband MIMO antenna with double gap[J]. Journal of terahertz science and electronic information technology, 2018, 16(6): 1048.