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Compact HMSIW four-way filtering power divider with pre-defined division ratio
International Journal of RF and Microwave Computer-Aided Engineering ( IF 1.7 ) Pub Date : 2021-07-29 , DOI: 10.1002/mmce.22841
Yu‐Xing Yan 1 , Wei Yu 1 , Wei Qin 1 , Ming‐Zhu Du 1 , Jian‐Xin Chen 1
Affiliation  

A novel and simple design approach of compact four-way filtering power divider (FPD) using half-mode substrate integrated waveguide (HMSIW) cavity is investigated in this letter. The pre-defined power division ratio of the four outputs is obtained by adjusting the external quality factor (Qe) of each output port, while the total output Qe is equal to the input Qe. The four outputs are loaded to a single HMSIW resonator, achieving a compact size. Meanwhile, both bandpass response and power division can be designed independently. For demonstration, a prototype with pre-defined power division ratio of 1:3:3:1 is designed, fabricated, and measured. The measured results show that the FPD centered at 4.88 GHz owns a 3-dB fractional bandwidth (FBW) of 11.3%. The insertion loss of the passband is about 1.4 dB and the return loss is better than 17 dB, meanwhile the phase differences of in-phase four outputs are all within 5° from 4.61 to 5.16 GHz. Good agreement is observed between the simulated and measured results.

中文翻译:

具有预定义分频比的紧凑型 HMSIW 四路滤波功率分配器

在这封信中研究了一种使用半模衬底集成波导 (HMSIW) 腔的紧凑型四路滤波功率分配器 (FPD) 的新颖且简单的设计方法。四个输出的预定义功分比是通过调整每个输出端口的外部品质因数(Q e)获得的,而总输出Q e等于输入Q e. 四个输出加载到单个 HMSIW 谐振器,实现紧凑的尺寸。同时,带通响应和功率分配都可以独立设计。为了演示,设计、制造和测量了一个预定义功率分配比为 1:3:3:1 的原型。测量结果表明,以 4.88 GHz 为中心的 FPD 拥有 11.3% 的 3-dB 分数带宽 (FBW)。通带插入损耗约1.4dB,回波损耗优于17dB,同时4.61-5.16GHz同相四路输出相位差均在5°以内。在模拟结果和测量结果之间观察到良好的一致性。
更新日期:2021-09-01
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