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一种圆极化缝隙波导天线阵
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摘要
本文介绍了一种圆极化缝隙波导天线阵,其辐射单元由对称脊波导凹陷金属边的纵向长缝和凸出双边一对倾斜缝构成,两种缝隙辐射幅度相等、正交电磁波,脊波导凹陷深度约四分之一波长,得到两种极化辐射场90度相位差。该种辐射单元构成的天线阵效率高、结构简单、易于加工,仿真设计了一个平面阵,验证了圆极化天线功能。
A novel circularly polarized(CP) waveguide slot antenna array is presented. The radiating element is composed of a pair of tilted slots cut in the narrow walls of a ridge waveguide and a longitudinal slot in bottom of the U-shaped wall, which radiate a couple of orthogonal electromagnetic fields. The quarter of wave length depth of the ridge offers 90° phase difference for the two polarized fields. The CP antenna array composes of the radiating elements showing high efficiency and simple structure. A planar array is simulated with perfect performances, verifying the design.
引文
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    2 R.K.Stilwell,R.E.Wallis,and M.L.Edwards,“A circulaly polarized,electrically scanned slotted waveguide array suitable for high temperature environments”,IEEE AP-S,2003,pp:1030-1033.
    3 M.Ferrrando-Rocher,J.I.Herranz-Herruzo,and et el,“Circularly polarized slotted waveguide array with improved axial ratio performance”,IEEE Tans.On AP,Vol.64(9),Sept.2016,pp:4144-4148.
    4 Y.-Q.Zou,H.-T.Zhang,W.Wang and M.-P.Jin,“Dual Circularly Polarized Waveguide Antenna Array for Satellite Communications in the X Band,”International Symposium on Antennas and Propagation(ISAP2015),Hobart,Tasmania,Australia,Nov.2015,pp:399-401.
    5 H.-T.Zhang,W.Wang,M.-P.Jin and Y.-Q.Zou.A Circularly Polarized Waveguide Phased Array Antenna for K Band Satellite Communications.IEEE AP-S,July,2015,pp:2485~2486.
    6 汪伟,张洪涛,齐美清等,脊波导倾斜缝隙对天线,中国专利:ZL 200910184962.6.
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    9 汪伟,齐美清,张洪涛,金谋平,邹永庆,一种圆极化天线,中国专利:ZL201310454644.3

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