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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Coplanar Waveguide Wideband Bandpass Filter and Its Application to Ultra-Wideband Pulse Generation
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Coplanar Waveguide Wideband Bandpass Filter and Its Application to Ultra-Wideband Pulse Generation

机译：共面波导宽带带通滤波器及其在超宽带脉冲产生中的应用

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摘要

A technique to design wideband coplanar waveguide bandpass filters is reported. The filter is realized by etching a slot on the ground plane around a gap on its central conductor and modifying the gap in the form of parallel lines. It is shown that the 3-dB fractional bandwidth of the filter can be varied from 60 to 110% by tuning the size of the slot aperture and the length of the parallel lines. Equivalent circuit and design steps are presented. Implementation area of the filter having passband 3.2-10.5 GHz is 0.90 λ_g × 0.26 λ_g, λ_g being the guided wavelength at 6.85 GHz while 20-dB stopband is at least up to 18 GHz. Insertion loss is less than 2 dB up to 9 GHz. Area of the filter having fractional band-width 60% at 3.85 GHz is 0.67 λ_g × 0.11 λ_g. Passband loss is within 1.5 and 20 dB stopband is at least up to 12 GHz. The proposed filter structure is very simple to integrate, and the ultra-wideband filter is used to generate an ultra-wideband pulse as defined by the US Fed-eral Communication Commission.
机译：报道了一种设计宽带共面波导带通滤波器的技术。通过在接地平面上的中心导体上的缝隙周围蚀刻缝隙并以平行线的形式修改缝隙，可以实现滤波器。结果表明，通过调整缝隙孔径的大小和平行线的长度，滤波器的3-dB分数带宽可以在60％至110％之间变化。给出了等效电路和设计步骤。具有通带3.2-10.5 GHz的滤波器的实现区域为0.90λ_g×0.26λ_g，λ_g是6.85 GHz的导波波长，而20 dB的阻带​​至少高达18 GHz。高达9 GHz的插入损耗小于2 dB。在3.85 GHz处具有60％的分数带宽的滤波器面积为0.67λ_g×0.11λ_g。通带损耗在1.5范围内，而20 dB的阻带​​至少高达12 GHz。所提出的滤波器结构非常易于集成，并且超宽带滤波器用于生成美国联邦通信委员会定义的超宽带脉冲。

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