提出了一种新型三频段工作的小型微带贴片天线,天线采用不对称结构,在接地板上引入缺陷地结构(DGS)改变了天线表面电流分布,改善工作频率,衍生在无线局域网(WLAN)(2.4 GHz)处的频带.加载开口谐振环(SRR)金属环结构在独立控制WLAN(5.8GHz)的频带的同时,减小了 12％的天线体积.天线结构紧凑,整体尺寸为12.5 mm ×28.5 mm ×1.5 mm.结果表明,天线覆盖3个独立的阻抗带宽,分别为 800 MHz(1.96～2.76 GHz),200 MHz(5.65～5.85 GHz)和 1460 MHz(7.64～9.1GHz),在频段内的回波损耗均小于-10 dB,具有良好的方向性和增益,支持WLAN(5.8/2.4GHz)频段和国际电信联盟(ITU)(8.0～8.7GHz)频段的应用.
Triple-band miniaturized antenna based on defective ground and split-ring resonator
A new small microstrip patch antenna with tri-band operation is proposed.The antenna adopts asymmetric structure and introduces defected ground structure(DGS)on the ground plane to change the antenna surface current distribution and improve the operating frequency,derive in the wireless local area network(WLAN)(2.4 GHz)band.The split-ring resonator(SRR)metal ring structure reduces the size of the antenna by 12％while independently controlling the WLAN(5.8 GHz)band.The antenna structure is compact with an overall size of 12.5 mm × 28.5 mm × 1.5 mm.The results show that the antenna covers three independent impedance bandwidths of 800 MHz(1.96～2.76 GHz),200 MHz(5.65～5.85 GHz)and 1 460 MHz(7.64～9.1 GHz),all with return loss less than-10 dB in the band,has good directionality and gain,and support the application of WLAN(5.8/2.4 GHz)band and International Telecommunication Union(ITU)(8.0～8.7 GHz)band.
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维普
