High-performance lens antenna using high refractive index metamaterials<xref rid="cpb_27_8_087802fn1" ref-type="fn">*</xref><fn id="cpb_27_8_087802fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 61761010 and 61461016), in part by the Natural Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant No. 2015jjBB7002), in part by the Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, and in part by the Innovation Project of GUET Graduate Education (Grant No. 2018JCX24).</p></fn>

High-performance lens antenna using high refractive index metamaterials**

Project supported by the National Natural Science Foundation of China (Grant Nos. 61761010 and 61461016), in part by the Natural Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant No. 2015jjBB7002), in part by the Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, and in part by the Innovation Project of GUET Graduate Education (Grant No. 2018JCX24).

Wang Lai-Jun¹, Chen Qiao-Hong¹, Yu Fa-Long¹, Gao Xi^{1, 2, †}

(color online) Measured normalized far-field radiation patterns of CPHA and LA for different operating frequencies: (a) 4.8 GHz, (b) 5.7 GHz, and (c) 6.7 GHz; (d) Measured axial ratios and realized gains of CPHA and LA.