In this article, a novel wideband high-selectivity filtering power divider (FPD) with all-frequency absorptive performance is presented. It is based on two cascaded coupled-line (CL) sections loaded with half-wavelength open-circuit stubs and three resonator absorptive stubs. To realize all-frequency absorption of the RF-input-power, three simple absorptive stubs composed of quarter-wavelength short-circuit stubs series with resistors are applied. By introducing the CL sections with half-wavelength open-circuit stubs, the power divider (PD) is easy to realize wideband high-selectivity filtering performance and deep stopband suppression. Besides, the impedances of the open-circuit stubs can be independently adjusted to control the bandwidth. Furthermore, explicit design equations and limitations of implementations are derived and discussed. Good agreements between the simulated and measured results verify the correctness of the design theory.

中文翻译：

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具有深度带外抑制功能的宽带高选择性滤波全频吸收式功率分配器


本文提出了一种具有全频率吸收性能的新型宽带高选择性滤波功率分配器（FPD）。它基于两个加载有半波长开路短截线和三个谐振器吸收短截线的级联耦合线 (CL) 部分。为了实现射频输入功率的全频率吸收，采用了由四分之一波长短路短截线与电阻串联组成的三个简单吸收短截线。通过引入具有半波长开路短截线的CL部分，功率分配器（PD）很容易实现宽带高选择性滤波性能和深度阻带抑制。此外，开路短截线的阻抗可以独立调节以控制带宽。此外，还导出并讨论了明确的设计方程和实现的限制。模拟结果和测量结果之间良好的一致性验证了设计理论的正确性。