【作者】 周志文； 孙晨舒； 王佳怡； 佟佳豪； 徐云学；

【Author】 ZHOU Zhiwen;SUN Chenshu;XU Yunxue;WANG Jiayi;Tong Jiahao;Key Laboratory of Antennas and Microwave Technology,XIDIAN UNIVERSITY;

【机构】 西安电子科技大学天线与微波技术重点实验室；

【摘要】 本文提出了一种基于紧凑双频双端口IFA天线单元的8X8 MIMO天线系统。天线单元由一个开口环结构的辐射体与一个连接开口环中心和地板的短路片构成,在短路片的两侧引入两个射频端口,从而实现紧凑的双频双端口天线单元,尺寸仅为26 mm×7.5 mm,并具有自隔离特性。8×8 MIMO天线的实测结果表明,-6 dB阻抗带宽为4.45 GHz～5.83 GHz和3.25 GHz～3.62 GHz,在高、低频段内隔离度分别优于13.3 dB和11 dB,包络相关系数(ECC)分别小于0.27和0.37。所有端口的辐射效率在低频段和高频段内为46.7%～71.9%和86.7%～99.8%。当信噪比为20 dB时,实测信道容量可达到38.6～43.8 bps/Hz。更多还原

【Abstract】 A dual-frequency dual-port antenna as Multiple-input multiple-output(MIMO) antenna unit scheme is proposed in this paper.The antenna element consists of a radiator with an open ring structure and a short circuit plate connecting the center of the open ring to the floor.Two Radio Frequency(RF) ports are introduced on both sides of the short circuit plate to realize a compact dual-frequency dual-port antenna unit,the size of which is only 26 mm ×7.5 mm,which is self-decoupled.The measured results of the 8×8 MIMO antenna show that the impedance bandwidths of-6 dB are 4.45～5.83 GHz and 3.25 GHz～3.62 GHz,and the isolation is better than 13.3 dB and 11 dB in the high band and low band,respectively.Meanwhile,Envelope Correlation Coefficients(ECC)are less than 0.27 and 0.37,separately.The radiation efficiency for all ports is 46.7 %～71.9 % and 86.7 %～99.8 % in the low band and high band,severally.The measured channel capacity is 38.6-43.8 bps/Hz for a signal-tonoise ratio of 20 dB.更多还原