波导缝隙阵列天线设计
The Design of the Longitudinal Slot Array of Waveguide's Wider Side
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摘要: 根据等效磁流片法对矩形波导宽边纵缝阵面进行分析设计，采用拟牛顿法对阵面参数求解，设计中考虑了波导内、外互耦的影响，孤立缝的自导纳采用矩量法获得，计算中考虑壁厚。阵列单元的结构与参数采用孤立缝的精确分析结果，从而加快了迭代速度。以S波段24单元缝隙阵的阵面分析计算和设计制作为例，测试与仿真的天线特性符合良好。
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关键词:
- 缝隙阵列天线;矩形波导;矩量法;互耦
Abstract: The longitudinal slot array of rectangular waveguide's wider side is analyzed and designed according to the equivalent magnetic current. The parameters of the array are obtained with the method of quasi-Newton, and the inner and external coupling coefficients are calculated and taken into account. Because the admittance of single slot is calculate with MOM, and the thickness of waveguide's wall is considered, the convergent rate is enhanced. As an example, an S-waveband slot array of 24 elements is designed, and the measured and simulated results are agreed well with each other. -
Elliot R S. Antenna Theory and Design. US: Prentice-Hall Inc.1981:408-410.[2]Elliot R S, Loughlin W R O. The design of slot arrays including internal mutual coupling. IEEE Trans. on Antennas Propagat.,1986, 34(9): 1149-1154.[2]Lyon R W, Sangster A J. Efficient moment method analysis of radiating slots in a thick-walled rectangular waveguide. IEE Proc.-H, 1981, 128(4): 197- 205.[3]Elliot R S. An improved design procedure for small array of shunt slots[J].IEEE Trans. on Antennas Propagat.1983, 31(1 ):48-53[4]王伟,方一,吕善伟.平面波导缝隙阵列阵面参数设计中的收敛问题.系统工程与电子技术,1993,(9):12-20.[5]王伟.高速高强度飞行器天线罩的研究与实践.[博士论文],北京:北京航空航天大学,2002年2月. -
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