H-Plane Crossed-Waveguide Hybrids
H-Plane Crossed-Waveguide Hybrids
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H 平面交叉波导混合体
DOI：
10.1109/eumc.2006.281088
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. Kishihara
中科院分区：
文献类型：
--
作者：
K. Toda;I. Ohta;M. Kishihara
本文提出了一种新颖的H面矩形波导十字正交混合器，它由两个十字波导组成，十字波导的十字区域有两个圆柱形金属柱，每个输入/输出端口有一个金属柱。前两个柱在信号流中产生方向性，后一个柱达到匹配状态。在此基础上设计了几种基本的混合电路，并成功地实现了一种宽带混合电路。实际上，在回波损耗和隔离度容限为20 dB的情况下，可以获得约28%的部分带宽，并且功率分配不平衡在整个带宽内保持在± 0.1 dB以内。设计结果的有效性得到了数值和实验的证实。此外，通过与常规杂交种的比较，证明了本杂交种的优势
This paper presents a novel cruciform quadrature hybrid in H-plane rectangular waveguide, which is composed of two cross waveguides having two cylindrical metallic posts in the cross region, and one post at each input/output port. The former two posts produce directional nature in a signal flow, and the latter post achieves a matched state. Several basic hybrids are designed in this structure, and then a broadband one is successfully realized. Actually, a fractional bandwidth of about 28 percent is obtained with a tolerance limit for return loss and isolation of 20 dB, and the power-split imbalance stays within plusmn0.1 dB over the bandwidth. The validity of the design results is confirmed both numerically and experimentally. Furthermore, the advantage of the present hybrid is demonstrated by comparison with conventional hybrids