In order to broaden the channel capacity of the communication system,a new type of dual-loop phased microstrip antenna array is designed.The antenna array uses coaxially fed circular graphene patches as the elements,with the inner ring containing 8 elements and the outer ring containing 16 elements,evenly spaced over a concentric circle.The simulation results show that the electromagnetic vortex beams with the modes l=0,l=±1,l=±2,l=±3,l=±4 and l=±5 can be generated by adjusting the phase distribution,and the dual loop Orbital Angular Momentum(OAM)microstrip antenna array achieves a higher gain than the single ring,with a maximum gain of 19.2 dBi.At the same time,by changing the chemical potential of graphene,the antenna can achieve frequency tunable in the range of 5.59～6.28 THz,which provides a new option for capacity improvement and spectrum utilization optimization of wireless communication systems in the future.
关键词
轨道角动量/均匀圆阵列/可调谐/太赫兹/石墨烯
Key words
OAM/uniform circle array/tunable/terahertz/graphene
维普
万方数据