In this article, a systematic procedure is presented for the design of a dual-band unequal-split Wilkinson power divider (WPD) with high frequency and power division ratios. The design methodology is based on replacing the impractical high-impedance transmission line in the conventional divider with cascaded T-section structures with short-circuited stubs. The proposed methodology is simple and adopts distributed elements without reactive components to achieve a large power division ratio. The use of short-circuited stubs allows for circuit miniaturization in comparison to counterpart open-stub techniques. Furthermore, a high frequency ratio is obtained through optimizing the electrical and physical parameters of the T-sections based on a transmission lines theory framework as demonstrated in a simulated and measured prototype. To validate the proposed procedure, two WPD prototypes operating at 1/2.7 GHz and 1/4.4 GHz with a 1:10 power division ratio are simulated and measured. The theoretical response, supported by electromagnetic simulations and measurements, justifies the design concept.

中文翻译：

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基于带短截线的相同/非相同多T部分的高频/功率比威尔金森功率分配器

在本文中，提出了一种系统的程序，用于设计具有高频和功率分配比的双频带不等分威尔金森功率分配器（WPD）。该设计方法基于将传统分频器中不切实际的高阻抗传输线替换为带有短截线的级联T型截面结构。所提出的方法是简单的，并且采用没有电抗组件的分布式元件来实现大的功率分配比。与相应的开路短截线技术相比，短路短线的使用可以使电路小型化。此外，如仿真和测量的原型所示，通过基于传输线理论框架优化T型截面的电气和物理参数，可以获得高频率比。为了验证所提出的程序，模拟并测量了在1 / 2.7 GHz和1 / 4.4 GHz，功率分配比为1:10的两个WPD原型。电磁仿真和测量支持的理论响应证明了设计概念的合理性。