This paper presents a novel coupled receiver-transmitter metasurface(MS)which is used to realize a high-aperture-efficiency Fabry-Perot resonator antenna.The unit cell of the MS adopts a slot-coupling procedure to rea...This paper presents a novel coupled receiver-transmitter metasurface(MS)which is used to realize a high-aperture-efficiency Fabry-Perot resonator antenna.The unit cell of the MS adopts a slot-coupling procedure to realize energy transmission from the receiver patch to the radiator patch.This approach makes it easier to independently control the transmission magnitude and phase.Based on this characteristic,the transmission coefficients of different unit cells on the MS can be optimized by a genetic algorithm.Then,nearly uniform electric amplitude and phase distribution across the aperture field of the antenna are achieved.Therefore,the gain and aperture efficiency of the antenna are improved.A prototype of the optimized antenna is fabricated and measured to validate the design.The measured gain of the fabricated antenna reaches 17.3 dBi with an aperture efficiency of 94.5%.A higher aperture efficiency is obtained with the proposed antenna which has a low profile and simple structure.展开更多
This paper presents a review of transmitarray(TA)and reflectarray(RA)antennas based on the magnetoelectric(ME)dipole antenna struc-ture.First,the basic operating principles of ME dipole,TA and RA antennas are introduc...This paper presents a review of transmitarray(TA)and reflectarray(RA)antennas based on the magnetoelectric(ME)dipole antenna struc-ture.First,the basic operating principles of ME dipole,TA and RA antennas are introduced.Next,ME-dipole-based TA and RA designs are discussed,with four antenna designs presented in detail,including two fixed-beam TA designs with high aperture efficiencies and two reconfigurable designs with a beam-scanning capability.The techniques involved in these designs are also analyzed to provide insight into the ME-dipole-based TA and RA designs.The simulated and measured results of the reported prototypes show that the introduction of the ME dipole antenna significantly broadens the band-widths of the TA and RA antennas not only in the fixed-beam designs but also in the reconfigurable designs.The ME-dipole-based TA and RA designs reported in this paper are compared to highlight their benefits and limitations.Future possible research directions and challenges are also discussed.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.61871394)Natural Science Foundation of Shanxi Province,China(Grant No.2020JQ-482).
文摘This paper presents a novel coupled receiver-transmitter metasurface(MS)which is used to realize a high-aperture-efficiency Fabry-Perot resonator antenna.The unit cell of the MS adopts a slot-coupling procedure to realize energy transmission from the receiver patch to the radiator patch.This approach makes it easier to independently control the transmission magnitude and phase.Based on this characteristic,the transmission coefficients of different unit cells on the MS can be optimized by a genetic algorithm.Then,nearly uniform electric amplitude and phase distribution across the aperture field of the antenna are achieved.Therefore,the gain and aperture efficiency of the antenna are improved.A prototype of the optimized antenna is fabricated and measured to validate the design.The measured gain of the fabricated antenna reaches 17.3 dBi with an aperture efficiency of 94.5%.A higher aperture efficiency is obtained with the proposed antenna which has a low profile and simple structure.
基金supported in part by the Research Grants Council of the Hong Kong SAR,China(Grant Nos.9043154(CityU 11211721)and 9042674(CityU 11217618))the National Natural Science Foundation of China(Grant No.61971370)the Guangdong Provincial Department of Science and Technology,China(Grant No.2020B1212030002).
文摘This paper presents a review of transmitarray(TA)and reflectarray(RA)antennas based on the magnetoelectric(ME)dipole antenna struc-ture.First,the basic operating principles of ME dipole,TA and RA antennas are introduced.Next,ME-dipole-based TA and RA designs are discussed,with four antenna designs presented in detail,including two fixed-beam TA designs with high aperture efficiencies and two reconfigurable designs with a beam-scanning capability.The techniques involved in these designs are also analyzed to provide insight into the ME-dipole-based TA and RA designs.The simulated and measured results of the reported prototypes show that the introduction of the ME dipole antenna significantly broadens the band-widths of the TA and RA antennas not only in the fixed-beam designs but also in the reconfigurable designs.The ME-dipole-based TA and RA designs reported in this paper are compared to highlight their benefits and limitations.Future possible research directions and challenges are also discussed.
