A composite right/left handed (CRLH) metamaterial antenna is proposed in this paper. The antenna is designed for WLAN IEEE 802.11 standard; where bands 2.4 GHz usage frequency 2401–2495 MHz and 5 GHz usage frequency 5170–5875 MHz worldwide. A composite right left handed metamaterial has combined effect of right handed and left handed metamaterial and which creates dual band resonance in the antenna. By providing shorting pin loading at edge of the radiating metal, the left handed metamaterial property is created in the antenna. The antenna occupies rectangular area of 38.2 \(\times\) 29.1 \({{\hbox {mm}}}^2\) and 6 mm air gap from ground plane. The return loss of \(-10\) dB is achieved over the bandwidth with promising peak gain of 2.3 dBi and 8.6 dBi for 2.4 GHz and 5 GHz band, respectively. The antenna is fabricated, and measured values are closely matching with simulation results. The proposed antenna has orthogonal radiation patterns and maximum efficiency of 84.2% and 90.3% for dual frequencies.

本文提出了一种复合的右手/左手（CRLH）超材料天线。该天线设计用于WLAN IEEE 802.11标准；全球范围内2.4 GHz的使用频率为2401-2495 MHz，5 GHz的使用频率为5170-5875 MHz。复合的右手左手超材料结合了右手和左手超材料的作用，并在天线中产生了双频带谐振。通过在辐射金属的边缘提供短路销负载，可在天线中创建左手的超材料特性。天线的矩形面积为38.2 \（\ times \） 29.1 \（{{\ hbox {mm}}} ^ 2 \），并且与接地平面的气隙为6 mm。回波损耗\（-10 \） 在整个带宽上可实现dB，有希望的2.4 GHz和5 GHz频段的峰值增益分别为2.3 dBi和8.6 dBi。天线已制成，测量值与仿真结果紧密匹配。所提出的天线具有正交辐射图，双频最大效率分别为84.2％和90.3％。