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本文对由等腰直角三角形波导实现的1/4模基片集成波导进行了研究。采用基于等腰直角三角形波导的空腔模式法分析1/4模基片集成波导。文中基于1/4模基片集成波导设计了两种圆极化天线,并对这两种天线子阵的性能进行了比较。仿真结果表明文中提出的两种天线均具有很好的圆极化辐射特性。基于两个1/4模基片集成波导单元的圆极化天线和基于四个1/4模基片集成波导单元的圆极化天线,可广泛用于不同的应用需求。
In this paper, the 1/4 wave substrate integrated waveguide realized by isosceles right angle triangular waveguides has been studied. The cavity mode method based on isosceles right triangular waveguide was used to analyze the 1/4 mode substrate integrated waveguide. In this paper, two kinds of circularly polarized antennas are designed based on 1/4 mode substrate integrated waveguides, and the performances of the two antenna subarrays are compared. The simulation results show that the two antennas proposed in this paper all have good circularly polarized radiation characteristics. The circularly polarized antenna based on two 1/4 mode substrate integrated waveguide units and the circularly polarized antenna based on four 1/4 mode substrate integrated waveguide units can be widely used for different application requirements.