Low loss and compact wideband filtering power dividers (WB‐FPDs) with/without notch band are proposed. The WB‐FPDs are designed using wideband bandpass filter based on asymmetric stepped‐impedance resonator (SIR). Parallel coupled microstrip lines are used to create both wideband filtering characteristic and two additional transmission poles. A notch band can be generated at upper passband edge by using open‐circuited stubs on the SIRs. The WB‐FPDs with/without notch band are successfully designed, fabricated, and tested. The wide passband is centered at 4 GHz with the fractional bandwidth (FBW) of 51.1%, while the notch band is at 5.56 GHz with the FBW of 3.1%. Good agreement between the simulated and measured results is observed.

中文翻译：

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带/不带陷波带的宽带滤波功率分配器

提出了带/不带陷波带的低损耗紧凑型宽带滤波功率分配器（WB-FPD）。WB-FPD 是使用基于不对称阶跃阻抗谐振器 (SIR) 的宽带带通滤波器设计的。并行耦合微带线用于创建宽带滤波特性和两个额外的传输极。通过使用 SIR 上的开路短截线，可以在通带上边缘生成陷波带。带/不带陷波带的 WB-FPD 已成功设计、制造和测试。宽通带的中心频率为 4 GHz，分数带宽 (FBW) 为 51.1%，而陷波带的中心频率为 5.56 GHz，FBW 为 3.1%。观察到模拟结果和测量结果之间具有良好的一致性。