Rigorous hybrid field theoretic design of stepped rectangular waveguide mode converters including the horn transitions into half-space
Rigorous hybrid field theoretic design of stepped rectangular waveguide mode converters including the horn transitions into half-space
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阶梯式矩形波导模式转换器的严格混合场论设计，包括喇叭过渡到半空间
DOI：
10.1109/8.29365
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发表时间：
1989
影响因子：
5.7
通讯作者：
U. Tucholke
中科院分区：
文献类型：
--
作者：
T. Wriedt;K. Wolff;F. Arndt;U. Tucholke
本文提出了一种全波混合场论方法，用于精确和有效地计算机辅助设计完整的微波或毫米波辐射元件，包括阶梯式矩形波导模式转换器和喇叭过渡，包括孔径辐射到半空间的影响。该方法结合了完整的六场分量模态S矩阵公式，双平面波导不连续性问题的喉道部分，与全分量的时刻解决方案的孔径问题。利用两组正交极化的屋顶基函数来模拟孔径中的磁表面电流。设计理论严格考虑了所有重要的设计参数。通过与角锥喇叭过渡的实测数据的比较，验证了该方法的有效性。给出了两个阶梯式多模喇叭过渡段的设计实例。一个示例已经关于图案对称性进行了优化，并且从10.8到11.2 GHz实现了几乎相同的E平面图案和H平面图案。具有优化的交叉极化行为的第二个示例在11 GHz处示出了-50 dB的最大交叉极化水平。>
A full-wave hybrid field-theoretic method is presented for accurate and efficient computer-aided design of complete microwave or millimeter-wave radiating components comprising stepped rectangular-waveguide mode converters and horn transitions including the effect of the aperture radiating into half-space. The method combines the complete six-field-component modal S-matrix formulation, for the double-plane waveguide discontinuity problem of the throat section, with the full-component moment solution for the aperture problem. Two orthogonally polarized sets of rooftop basis functions are utilized to model the magnetic surface currents in the apertures. All important design parameters are rigorously taken into account by the design theory. The method is verified by comparison with available measured data for pyramidal horn transitions. Two design examples for stepped multimode horn transitions are presented. One example has been optimized with regard to pattern symmetry and achieves nearly identical E- and H-plane patterns from 10.8 to 11.2 GHz. The second example with optimized cross-polarization behavior shows -50-dB maximum cross-polarization level at 11 GHz. >