This paper communicates the design and experimental validation of dual-band SIW power dividers (single-stage and double-stage) with arbitrary power division. The dual-band power dividers are developed for WiMAX (3.5 GHz) and WLAN (5 GHz) applications. The proposed SIW power dividers are realized by a rectangular cavity, two rows of metallic-vias and one pair of unequal complementary split-ring resonators (CSRRs). Two resonating frequencies are produced below the waveguide cut-off frequency due to the unequal CSRRs etched-out on the top-surface of the cavity, which results in size reduction. To realize arbitrary power division, two output-ports are configured asymmetric with respect to input-port. The power division is varied by altering the distance between the two output-ports. Finally, two compact dual-frequency power dividers (single-stage and double-stage) working at 3.5 and 5 GHz are designed and validated through fabrication and measurement. The fabricated prototype exhibits dual-band operation, compact size (0.027λg2${\lambda }_{g}^{2}$), good magnitude imbalance, return loss and isolation.

中文翻译：

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任意功率分配的紧凑型双频SIW功率分配器的设计与实验验证

本文介绍了具有任意功率分配的双频段 SIW 功率分配器（单级和双级）的设计和实验验证。双频功率分配器专为 WiMAX (3.5 GHz) 和 WLAN (5 GHz) 应用而开发。所提出的 SIW 功率分配器由一个矩形腔、两排金属通孔和一对不等长的互补裂环谐振器 (CSRR) 实现。由于在腔顶表面蚀刻出不等的 CSRR，导致尺寸减小，因此在波导截止频率以下产生两个谐振频率。为了实现任意功率分配，两个输出端口被配置为相对于输入端口不对称。通过改变两个输出端口之间的距离来改变功率分配。最后，设计了两个工作在 3.5 GHz 和 5 GHz 的紧凑型双频功率分配器（单级和双级），并通过制造和测量进行了验证。制造的原型具有双频操作、紧凑的尺寸（0.027λg2${\lambda }_{g}^{2}$）、良好的幅度不平衡、回波损耗和隔离。