Metamaterial-Based Compact Antenna with Defected Ground Structure for 5G and Beyond  

作　　者：Md.Mushfiqur Rahman Md.Shabiul Islam Mohammad Tariqul Islam Samir Salem Al-Bawri Wong Hin Yong 

机构地区：[1]Faculty of Engineering,Multimedia University,Persiaran Multimedia,Cyberjaya,63100,Selangor,Malaysia [2]Department of Electrical,Electronic and Systems Engineering,Faculty of Engineering and Built Environment,Universiti Kebangsaan Malaysia,Bangi,43600,Malaysia [3]Space Science Centre,Climate Change Institute,Universiti Kebangsaan Malaysia(UKM),Bangi,43600,Malaysia

出　　处：《Computers, Materials & Continua》2022年第5期2383-2399,共17页计算机、材料和连续体（英文）

摘　　要：In this paper,a unit cell of a single-negative metamaterial structure loaded with a meander line and defected ground structure(DGS)is investigated as the principle radiating element of an antenna.The unit cell antenna causes even or odd mode resonances similar to the unit cell structure depending on the orientation of the microstrip feed used to excite the unit cell.However,the orientation which gives low-frequency resonance is considered here.The unit cell antenna is then loaded with a meander line which is parallel to the split bearing side and connects the other two sides orthogonal to the split bearing side.This modified structure excites another mode of resonance at high frequency when a meander line defect is loaded on the metallic ground plane.Specific parameters of the meander line structure,the DGS shape,and the unit cell are optimized to place these two resonances at different frequencies with proper frequency intervals to enhance the bandwidth.Finally,the feed is placed in an offset position for better impedance matching without affecting the bandwidth The compact dimension of the antenna is 0.25λL×0.23λL×0.02λL,whereλL is the free space wavelength with respect to the center frequency of the impedance bandwidth.The proposed antenna is fabricated and measured.Experimental results reveal that the modified design gives monopole like radiation patterns which achieves a fractional operating bandwidth of 26.6%,from 3.26 to 4.26 GHz for|S11|<−10 dB and a pick gain of 1.26 dBi is realized.In addition,the simulated and measured crosspolarization levels are both less than−15 dB in the horizontal plane.

关 键 词：Split ring resonator(SRR) meander line defected ground structure compact antenna bandwidth enhancement 5G technology 

分 类 号：TN82[电子电信—信息与通信工程]