Beam-frequency-scanning detection and point-to-point communication typically differ significantly in bandwidth and polarization characteristics,requiring two separate antennas in conventional designs.This paper propos...Beam-frequency-scanning detection and point-to-point communication typically differ significantly in bandwidth and polarization characteristics,requiring two separate antennas in conventional designs.This paper proposes a method to integrate a dual-mode radiation of narrowband circular polarization(CP)into a broadband linearly polarized(LP)beam-scanning leaky-wave antenna(LWA)using a full spoof surface plasmon polariton(SSPP)system.First,a grooved SSPP unit and its complementary structure are used with periodic mode modulation to achieve continuous vertically polarized(V-pol)dual-beam scanning from backward to forward.By periodically embedding spoof localized surface plasmon(SLSP)units,strong coupling between SLSPs and SSPPs is enabled under resonant conditions.Then,CP radiation is generated due to the rotating electric-field vectors of SLSPs.Experiment and simulation results demonstrate continuous V-pol beam scanning from−30°to 22°across 4.25–6.75 GHz,including effective broadside radiation.Notably,at 5.4 GHz,the antenna radiates right-handed circularly polarized(RHCP)and left-handed circularly polarized(LHCP)waves in opposite broadside directions.Compared with existing technologies,the insertable CP radiation allows the antenna to enable two significantly different operating modes,which can be applied in combined beam-scanning detection and narrowband satellite emergency communication,greatly improving system integration.展开更多
基金National Natural Science Foundation of China(62401133,62071117,62288101)111 Project(111-2-05)+3 种基金Natural Science Foundation of Jiangsu Province(BK20230192)Science and Technology Research Funds of Wuxi TaihuLight Program(K20231007)Sichuan Province Engineering Research Center for Broadband Microwave Circuit High Density IntegrationYoung Elite Scientists Sponsorship Program by Jiangsu Association for Science and Technology.
文摘Beam-frequency-scanning detection and point-to-point communication typically differ significantly in bandwidth and polarization characteristics,requiring two separate antennas in conventional designs.This paper proposes a method to integrate a dual-mode radiation of narrowband circular polarization(CP)into a broadband linearly polarized(LP)beam-scanning leaky-wave antenna(LWA)using a full spoof surface plasmon polariton(SSPP)system.First,a grooved SSPP unit and its complementary structure are used with periodic mode modulation to achieve continuous vertically polarized(V-pol)dual-beam scanning from backward to forward.By periodically embedding spoof localized surface plasmon(SLSP)units,strong coupling between SLSPs and SSPPs is enabled under resonant conditions.Then,CP radiation is generated due to the rotating electric-field vectors of SLSPs.Experiment and simulation results demonstrate continuous V-pol beam scanning from−30°to 22°across 4.25–6.75 GHz,including effective broadside radiation.Notably,at 5.4 GHz,the antenna radiates right-handed circularly polarized(RHCP)and left-handed circularly polarized(LHCP)waves in opposite broadside directions.Compared with existing technologies,the insertable CP radiation allows the antenna to enable two significantly different operating modes,which can be applied in combined beam-scanning detection and narrowband satellite emergency communication,greatly improving system integration.
