Band Notched UWB-BPF Based on Broadside Coupled Microstrip/CPW Transition

被引：11
作者：
Ghazali, Abu Nasar [1 ]
Singh, Avantika [1 ]
机构：
[1] BIT Mesra, Dept Elect & Commun Engn, Patna Campus, Patna, Bihar, India
来源：
IETE JOURNAL OF RESEARCH | 2016年 / 62卷 / 05期
关键词：
Bandpass filter (BPF); Co-planar waveguide (CPW); Defected ground structures (DGS); Spur line; Ultra-wideband (UWB); TO-CPW TRANSITION; FILTER;
D O I：
10.1080/03772063.2016.1162674
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A planar band notched ultra-wideband (UWB) bandpass filter based on broadside coupling of microstrip/co-planar waveguide (CPW) transition is proposed and implemented. The UWB filter topology is made up of microstrip lines on the top coupled in broadside fashion to an open ended CPW in the ground plane. Dual narrow notches at 5.2 and 7.9 GHz are implemented by etching two meander shaped defected ground structures in the CPW under the microstrip lines. A wideband stopband for improved isolation is obtained with the suppression of spurious harmonics by the attenuation poles generated by the spur line structures embedded in the input and output feeding lines. The proposed structure exhibits good frequency characteristics and is of compact size.
引用
收藏
页码：686 / 693
页数：8
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