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利用磁电超表面概念通过在等腰直角三角形天线贴片和接地面上分别蚀刻周期互补开口谐振环和十字缝隙图案并将天线对应的地板位置截取掉一部分分别构建了单元1和单元2,分析了其左手特性和提高高频端增益的工作机理,最终加载单元2制作了一款宽带多频贴片天线。仿真结果表明,所提出的天线具有4个带宽并且能够覆盖2.4/5.2/5.8 GHz的蓝牙/RFID/WLAN和2.5/3.5 GHz的Wi MAX频带,这4个频带的带宽分别是0.29GHz(2.33~2.62 GHz),1.01 GHz(3.11~4.12 GHz),0.39 GHz(4.97~5.36 GHz),0.41 GHz(5.74~6.15 GHz)。由于接地板上蚀刻的超材料结构的左手特性影响了天线介质基底的等效媒质参数,天线电磁场的传播方向被改变,在高频端,天线辐射场主要集中在水平方向而不是传统贴片天线的垂直方向。
By using the concept of magneto-electro-super-surface, unit 1 and unit 2 are respectively constructed by etching the periodic complementary open-ended resonant ring and the cross-slot pattern at the isosceles right-angled triangular antenna patch and the ground plane and intercepting a portion of the floor corresponding to the antenna, The left hand and improve the working mechanism of high-frequency gain, the final loading unit 2 produced a broadband multi-frequency patch antenna. The simulation results show that the proposed antenna has 4 bandwidths and can cover 2.4 / 5.2 / 5.8 GHz Bluetooth / RFID / WLAN and 2.5 / 3.5 GHz Wi MAX bands with bandwidths of 0.29GHz (2.33 ~ 2.62 GHz), 1.01 GHz (3.11 to 4.12 GHz), 0.39 GHz (4.97 to 5.36 GHz), and 0.41 GHz (5.74 to 6.15 GHz). Since the left-handed nature of the etched metamaterial structure on the ground plane affects the equivalent medium parameters of the antenna medium substrate, the propagation direction of the electromagnetic field of the antenna is changed. At the high-frequency end, the antenna radiation field is mainly concentrated in the horizontal direction rather than the conventional patch antenna The vertical direction.