加载人工电磁结构的增益增强型圆极化频扫天线
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摘要
本文首先复现了一个周期漏波天线,通过在基片集成波导(SIW)上加载一对横向槽和纵向槽。采用微带渐变线-基片集成波导转换结构馈电,该周期漏波天线在空间辐射圆极化波,通过最大限度匹配横槽对和纵向槽的辐射模式得到很宽的圆极化波束扫描范围,波束扫描范围从后向通过侧向一直到前向。通过仿真优化,得到的圆极化波束扫描范围从-37°到27°,该圆极化波束扫描范围比先前大多数已有设计都要更宽。通过在该结构上加载人工电磁结构,在基本不改变圆极化辐射、波束扫描范围的情况下使其增益提高了3dB左右,在卫星通信系统中具有很好的应用价值。
In this paper, a periodic leaky wave antenna is designed to load a pair of transverse and longitudinal slots on a substrate integrated waveguide(SIW). Microstrip gradual line-substrate integrated waveguide conversion structure feed. The periodic leaky wave antenna is able to yield circular polarization beam in the space, which scans continuously from backward through broadside, and to forward. A large circularly polarized beam scanning range is obtained by maximally coinciding radiation patterns of the series and shunt slots[1]. Through simulation and optimization, the circular polarization beam scanning range from-37° to 27° degrees is obtained, the circular polarization beam scanning range is wider than most previous designs have been designed. An artificial electromagnetic structure is loaded on the basis of the structure, on the basis of a small change in the range of circular polarization radiation and sweep frequency, the gain is increased by about 3dB,which has great application values in satellite communication system.
In this paper, a periodic leaky wave antenna is designed to load a pair of transverse and longitudinal slots on a substrate integrated waveguide(SIW). Microstrip gradual line-substrate integrated waveguide conversion structure feed. The periodic leaky wave antenna is able to yield circular polarization beam in the space, which scans continuously from backward through broadside, and to forward. A large circularly polarized beam scanning range is obtained by maximally coinciding radiation patterns of the series and shunt slots[1]. Through simulation and optimization, the circular polarization beam scanning range from-37° to 27° degrees is obtained, the circular polarization beam scanning range is wider than most previous designs have been designed. An artificial electromagnetic structure is loaded on the basis of the structure, on the basis of a small change in the range of circular polarization radiation and sweep frequency, the gain is increased by about 3dB,which has great application values in satellite communication system.
引文
[1]Yue-Long Lyu,Fan-Yi Meng,”Periodic SIWLeaky-Wave Antenna With Large Circularly Polarized Beam Scanning Range,”IEEE ANTENNAS ANDWIRELESS PROPAGATION LETTERS,VOL.16,2017
[2]A.A.Oliner and D.R.Jackson,Antenna Engineering Hand Book.4th ed.New York,USA:McGraw-Hill,2007.
[3]Y.Dong and T.Itoh.“Substrate integrated composite right-/left-handed leaky-wave structure for polarizationflexible antenna application,”IEEE Trans.Antennas Propag.,vol.60,no.2,pp.760-771,Feb.2012.
[4]S.Otto et al.,“Circular polarization of periodic leaky-wave antennas with axial asymmetry:Theoretical proof and experimental demonstra-tion,”IEEE Trans.Antennas Propag.,vol.62,no.4,pp.1817-1829,Apr.2014.
[5]曹文权.新型人工电磁结构在天线中的应用研究.南京:解放军理工大学,2014。
[6]马永强.基于人工电磁结构加载的增益增强型宽带圆极化天线.南京:解放军理工大学,2017.
[2]A.A.Oliner and D.R.Jackson,Antenna Engineering Hand Book.4th ed.New York,USA:McGraw-Hill,2007.
[3]Y.Dong and T.Itoh.“Substrate integrated composite right-/left-handed leaky-wave structure for polarizationflexible antenna application,”IEEE Trans.Antennas Propag.,vol.60,no.2,pp.760-771,Feb.2012.
[4]S.Otto et al.,“Circular polarization of periodic leaky-wave antennas with axial asymmetry:Theoretical proof and experimental demonstra-tion,”IEEE Trans.Antennas Propag.,vol.62,no.4,pp.1817-1829,Apr.2014.
[5]曹文权.新型人工电磁结构在天线中的应用研究.南京:解放军理工大学,2014。
[6]马永强.基于人工电磁结构加载的增益增强型宽带圆极化天线.南京:解放军理工大学,2017.