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Dual-Band Filtering Power Divider Using Dual-Resonance Resonators With Ultrawide Stopband and Good Isolation

机译:使用具有超宽阻带和良好隔离度的双谐振谐振器的双频带滤波功率分配器

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摘要

In this letter, a novel compact dual-band filtering power divider (DB-FPD) is proposed. It consists of a U-shaped Wilkinson power divider, two pairs of dual-resonance resonators (DRRs), and a pair of spur lines. With the simultaneous use and appropriate design of the coupled feedlines, mixed electric and magnetic couplings between the DRRs and spur-lines with different lengths, multiple transmission zeros are produced which result in two passbands with desired power division, high-frequency selectivity, good isolation, and an ultrawide stopband. A prototype DB-FPD operating at 2.3 and 3.5 GHz with 3-dB fractional bandwidths of 8% and 6% is designed, fabricated, and measured. The measured responses agree well with the design simulations, exhibiting a stopband up to 13.8 GHz (6 f(0)) with 20-dB rejection level.
机译:在这封信中,提出了一种新颖的紧凑型双频带滤波功率分配器(DB-FPD)。它由一个U型Wilkinson功率分配器,两对双谐振谐振器(DRR)和一对支线组成。通过同时使用并适当设计耦合的馈线,DRR和支线之间具有不同长度的混合电耦合和磁耦合,会产生多个传输零点,从而导致两个通带具有所需的功率分配,高频选择性,良好的隔离度,以及超宽的阻带。设计,制造和测量了在2.3和3.5 GHz频率下工作的DB-FPD原型,其3-dB分数带宽分别为8%和6%。测得的响应与设计仿真非常吻合,显示出高达13.8 GHz(6 f(0))的阻带和20 dB的抑制水平。

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