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针对当前超表面圆极化天线研究中存在的尺寸大、带宽与小尺寸无法兼顾等问题,提出了一种宽带紧凑型圆极化超表面天线。该天线采用跨层容性加载技术,通过在方形超表面结构上方加载跨层寄生贴片来引入跨层电容,从而降低谐振频点,实现超表面结构的小型化。同时,这种跨层容性加载超表面结构也具有极化相关特性,将其与45°斜耦合馈电缝隙结合,能够在小尺寸下实现具有宽带特性的圆极化超表面天线。测试结果表明,该天线在辐射口径为0.4 λ0×0.4 λ0的情况下,-10 dB阻抗带宽为39.56%(5.82～8.69 GHz);3 dB轴比带宽可达26.98%(6.54～8.58 GHz)。该天线具有圆极化辐射性能良好、宽带、小型化和低剖面等优点,为现代宽带无线通信系统天线的实现提供了一种技术选择。
Abstract：To address the challenge of big size and the conflict between bandwidth and small size of circularly-polarized(CP) metasurafce(MS) antenna, a compact wideband CP antenna using capacitive-loaded MS is proposed.The antenna adopts the cross-layer capacitive loading technology, and introduces the cross-layer capacitance by loading the cross-layer parasitic patch above the square metasurface structure, thus reducing the resonance frequency point and realizing the miniaturization of the metasurface structure.Besides, the proposed cross-layer MS structure also exhibits a polarization-dependent reflection feature, which can be applied to realize the CP MS antenna by combing with a 45° slanted coupling slot.The tested results show that, when the radiation aperture of the antenna is 0.4λ0×0.4λ0,the impedance bandwidth of-10 dB is 39.56%(5.82～8.69 GHz).3 dB axis specific bandwidth can reach 26.98%(6.54～8.58 GHz).The antenna has the advantages of good circularly polarized radiation performance, wideband, miniaturization, low profile and so on, which provides a technical choice for the realization of modern broadband wireless communication system antenna.
[1] 张际，徐溯，刁杨华，等.基于超表面的低剖面宽带圆极化天线[J].中国新通信，2021,23(18):15-17.
[2] 马学礼，冯全源.小型超表面圆极化天线设计[J].无线电工程，2017,47(8):44-47.
[3] 薛玲珑，方文婷，许娟，等.一种中心馈电圆极化天线设计[J].无线电工程，2021,51(4):308-312.
[4] LI K,LI L,CAI Y M,et al.A Novel Design of Low-profile Dual-band Circularly Polarized Antenna with Metasurface[J].IEEE Antennas and Wireless Propagation Letters,2015,14:1650-1653.
[5] WU Z,LI L,LI Y J,et al.Metasurface Superstrate Antenna with Wideband Circular Polarization for Satellite Communication Application[J].IEEE Antennas and Wireless Propagation Letters,2016,15:374-377.
[6] SIEVENPIPER D,ZHANG L J,BROAS R F J,et al.High-impedance Electromagnetic Surfaces with a Forbidden Frequency Band[J].IEEE Transactions on Microwave Theory and Techniques,1999,47(11):2059-2074.
[7] LIU W,CHEN Z N,QING X M.Metamaterial-based Low-profile Broadband Mushroom Antenna[J].IEEE Transactions on Antennas and Propagation,2014,62(3):1165-1172.
[8] CHEN D X,YANG W C,CHE W Q,et al.Broadband Stable-gain Multiresonance Antenna Using Nonperiodic Square-ring Metasurface[J].IEEE Antennas and Wireless Propagation Letters,2019,18 (8):1537-1541.
[9] LIN F H,CHEN Z N,LIU W.A Metamaterial-based Broadband Circularly Polarized Aperture-fed Grid-slotted Patch Antenna[C]//2015 IEEE 4th Asia-Pacific Conference on Antennas and Propagation (APCAP).Bali:IEEE,2015:353-354.
[10] YANG W C,MENG Q,CHE W Q,et al.Low-Profile Wideband Dual-circularly Polarized Metasurface Antenna Array with Large Beamwidth[J].IEEE Antennas and Wireless Propagation Letters,2018,17(9):1613-1616.
[11] LIU W E I,CHEN Z N,QING X,et al.Miniaturized Wideband Metasurface Antennas[J].IEEE Transactions on Antennas and Propagation,2017,65(12):7345-7349.
[12] LIU W,CHEN Z N,QING X.Miniaturized Broadbandmetasurface Antenna Using Stepped Impedance Resonators[C]//2016 IEEE 5th Asia-Pacific Conference on Antennas and Propagation (APCAP).Kaohsiung:IEEE,2016:365-366.
[13] ZHAO C,WANG C.Characteristic Mode Design of Wideband Circularly Polarized Patch Antenna Consisting of H-shaped Unit Cells[J].IEEE Access,2018,6:25292-25299.
[14] JUAN Y,YANG W C,CHE W Q.Miniaturized Low-profile Circularly Polarized Metasurface Antenna Using Capacitive Loading[J].IEEE Transactions on Antennas and Propagation,2019,67(5):3527-3532.
[15] YANG F,RAHMAT-SAMII Y.Polarization Dependent Electromagnetic Band-gap Surfaces:Characterization,Designs,and Applications[C]//IEEE Antennas and Propagation Society International Symposium.Columbus:IEEE,2003:339-342.
[16] TA S X,PARK I.Low-profile Broadband Circularly Polarized Patch Antenna UsingMetasurface[J].IEEE Transactions on Antennas and Propagation,2015,63(12):5929-5934.
[17] CHEN D X,YANG W C,CHE W Q,et al.Miniaturized Wideband Metasurface Antennas Using Cross-layer Capacitive Loading[J].IEEE Antennas and Wireless Propagation Letters,2022,21(1):19-23.
[18] YANG W C,CHEN S,XUE Q,et al.Novel Filtering Method Based on Metasurface Antenna and Its Application for Wideband High-gain Filtering Antenna with Low Profile[J].IEEE Transactions on Antennas and Propagation,2019,67(3):1535-1544.
基本信息:
DOI：
中图分类号:TN821.1
引用信息:
[1]陈东旭,车文荃,杨琬琛等.容性加载的宽带紧凑型圆极化超表面天线[J].无线电工程,2022,52(02):238-243.
基金信息:
广东省重点研发项目(2018B010115001); 广东省毫米波与太赫兹重点实验室开放课题(2019B030301002KF2102)~~