Millimeter-Wave Transition From Waveguide to Two Microstrip Lines Using Rectangular Patch Element
Millimeter-Wave Transition From Waveguide to Two Microstrip Lines Using Rectangular Patch Element
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DOI：
10.1109/tmtt.2007.895139
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发表时间：
2007-05
影响因子：
4.3
通讯作者：
Hideo Iizuka;K. Sakakibara;N. Kikuma
中科院分区：
文献类型：
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作者：
Hideo Iizuka;K. Sakakibara;N. Kikuma
提出了一种毫米波波导到微带线的过渡结构及其设计方法。利用贴片天线的腔体模型和波导的并矢绿色函数分析了短端波导中的矩形贴片单元。分析指出，矩形贴片单元存在一个宽带最佳宽度，该宽度仅起波导宽壁宽度的作用。转换也可以作为一个分隔符。通过对一个由两条微带线组成的过渡段的数值计算，验证了该分析模型的有效性，并指出两条微带线之间的距离存在一个抑制高阶模的最佳长度。在76 ~ 77 GHz频率范围内，转换器的插入损耗为0.5 dB，波导端口的反射系数低于-15 dB时，转换器的带宽为6.9%（5.29 GHz
A millimeter-wave transition from a waveguide to two microstrip lines and the design methodology are proposed. A rectangular patch element in a short-terminated waveguide is analyzed by the cavity model of a patch antenna and the dyadic Green's function of the waveguide. The analysis points out that the rectangular patch element has an optimum width for wideband, which only has the function of the broad wall width of the waveguide. The transition also works as a divider. A numerical investigation of a transition having two microstrip lines validates the analytical model in terms of wideband, and indicates that the distance between the two microstrip lines has an optimum length for suppressing higher order modes. A prototype transition exhibits an insertion loss of 0.5 dB from 76 to 77 GHz, and a bandwidth of 6.9% (5.29 GHz) for the reflection coefficient below -15 dB for the waveguide port