A single-layer hollow-waveguide 8-way Butler matrix
A single-layer hollow-waveguide 8-way Butler matrix
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DOI：
10.1093/ietele/e89-c.7.1080
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发表时间：
2005-07
期刊：
影响因子：
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通讯作者：
Shin-ichi Yamamoto;J. Hirokawa;M. Ando
中科院分区：
文献类型：
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作者：
Shin-ichi Yamamoto;J. Hirokawa;M. Ando
作者将一种简化方法应用于空芯波导。后壁波导是一个介质填充波导和测量的传输损耗为0.039 dB/cm在25.6 GHz。空心波导具有非常低的损耗，并且计算的传输损耗为0.004dB/cm。估计使用中空波导的8路巴特勒矩阵的完整结构的损耗仅为0.2dB。为了在单层波导中实现多个划分，布置了许多交叉耦合器。耦合器，特别是交叉耦合器的长度减小对于整个结构的简化是重要的。采用该方法设计的交叉耦合器比传统设计方法缩短50%。
The authors apply a reduction method to hollow waveguides. The post-wall waveguide is a dielectric-filled waveguide and the measured transmission loss is 0.039 dB/cm at 25.6 GHz. A hollow waveguide has very low loss and the calculated transmission loss is 0.004 dB/cm. The loss of the full structure of an 8-way Butler matrix using hollow waveguides is estimated to be only 0.2 dB. In order to realize many divisions in a single layer waveguide, many cross couplers are arranged. The length reduction of the couplers, especially the cross couplers, is important in order to miniaturize the full structure. By the proposed method, the cross coupler is 50% shorter than the conventional design method.