【作者】 周志伟； 蒲友雷； 马骥； 李文才； 罗勇；

【Author】 Zhiwei Zhou;Youlei Pu;Ji Ma;Wencai Li;Yong Luo;School of Electronic Science and Engineering,University of Electronic Science and Technology of China;Laboratory of Electromagnetic Space Cognition and Intelligent Control;

【机构】 电子科技大学电子科学与工程学院； 电磁空间认知与智能控制技术实验室；

【摘要】 本文设计了一种基于寄生枝节的高隔离低剖面小型化全向MIMO天线。通过对两个PIFA天线进行切角,添加"S"形寄生枝节和开槽设计,从而最大限度地提高天线的隔离度。相比传统的设计,在不改变天线尺寸(0.21λ×0.30λ×0.06λ)的情况下,本文设计的天线的隔离度从3.8 dB增加到18.3 dB。并且使用LC匹配电路,使天线的10 dB阻抗带宽提高到11%,覆盖GSM1800频段(1.71 GHz～1.88 GHz)。该天线在水平面上的不圆度小于4.2 dB,峰值增益高于3.7 dBi,效率高于93.4%。更多还原

【Abstract】 A high-isolated low-profile miniaturized omnidirectional MIMO antenna at GSM1800(1.71-1.88 GHz) has been designed using an "S" parasitic stub is added between the two PIFAs.To maximize the isolation of the antenna a trapezoid type patch with four serrated slots is employed.Compared with the traditional design,the isolation of the proposed antenna was increases from 3.8 dB to 18.3 dB without changing the size of the antenna(0.21λ×0.30λ×0.06 A).The 10 dB impedance bandwidth of the antenna is improved to 11 % by LC matching network.Its gain variation is less than 4.2 dB in the horizontal plane,peak gain is higher than 3.7 dBi,and efficiency is higher than 93.4%.更多还原