In this paper, a wide-band balanced-to-unbalanced power divider is presented using a novel multi-layer microstrip-slotline to substrate integrated waveguide (SIW) structure. The equivalent circuit of proposed microstrip-slotline-SIW transition is analyzed and verified with EM simulations, showing good wide-band response. By combining four microstrip-slotline-SIW transitions with symmetric and antisymmetric arrangement, a compact balanced-to-unbalanced power divider is realized. To verify the proposed design, a prototype was also fabricated and characterized. At differential-mode, the measurements show a 4.3 dB insertion loss (|S_sd21|) and >12 dB return loss (|S_dd11|) over 5.7–10.7 GHz. These are in good agreement with simulation results.

中文翻译：

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使用微带槽线 SIW 转换的宽带平衡到不平衡功率分配器

在本文中，提出了一种使用新型多层微带槽线到衬底集成波导 (SIW) 结构的宽带平衡到不平衡功率分配器。所提出的微带槽线-SIW 转换的等效电路经过电磁仿真分析和验证，显示出良好的宽带响应。通过将四个微带槽线 SIW 转换与对称和反对称排列相结合，实现了紧凑的平衡到不平衡功率分配器。为了验证所提出的设计，还制造了一个原型并对其进行了表征。在差模下，测量结果显示 4.3 dB 插入损耗 (|S _sd21 |) 和 >12 dB 回波损耗 (|S _dd11 |) 超过 5.7–10.7 GHz。这些与模拟结果非常吻合。