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) The schematic diagram of the lens antenna. The five layers of GRIN lens are designed including one core layer, two coat 1 layers, and two coat 2 layers. The lens antenna dimensions are: T = 17.688 mm, H = 80 mm, r₀ = 80 mm, D = 46 mm, t_core = 1.544 mm, t_{coat 1} = 3.036 mm, t_{coat 2} = 5.036 mm, d₁ = 0.5 mm, d₂ = 1 mm, and d₃ = 2 mm, respectively. The substrates of the lens are RO4350B (ε_r1 = 3.66, δ₁ = 0.0037, h₁ = 0.508 mm, and t₁ = 0.018 mm) and F4B (ε_r2 = 2.2, δ₂ = 0.001, h₂ = 1 mm, and t₂ = 0.018 mm). The total thickness of the lens is 17.688 mm (0.34λ₀).