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A narrow-band two-cavity filter with five transmission zeros

机译:具有五个传动零的窄带双腔滤波器

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The presented filter has two transmission poles and five transmission zeros. The parallel coupling between two hairpin resonators, the open-circuited stubs result in three transmission zeros in the vicinity of the passband. The two stubs which share a common grounded via-hole contribute two additional transmission zeros in the upper stopband. The novel filter with 4.5% fractional bandwidth (FBW) has been designed and fabricated to verify the validity of the proposed method. Measured results are in good agreement with the electromagnetic simulation. The measured results show five transmission zeros in the stopband, located at 1.72GHz, 2.25GHz, 2.55 GHz, 3.17 GHz, 4.33 GHz, respectively. The circuit size of proposed bandpass filter only occupies 20 17mm.
机译:所提出的过滤器具有两个传输极和五个传输零。 两个发夹谐振器之间的平行耦合,开放式短截线在通带附近导致三个传动零。 共享公共接地通孔的两个短截孔在上部停留带中有助于两个额外的传输零。 设计和制造了具有4.5%分数带宽(FBW)的新型过滤器,以验证所提出的方法的有效性。 测量结果与电磁模拟很好。 测量结果分别显示了位于1.72GHz,2.25GHz,2.55 GHz,3.17GHz,4.33GHz的终止带中的五个传输零。 所提出的带通滤波器的电路尺寸仅占用20 17mm。

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