Modelling and validation of a simple and compact wide upper stop band ultra-wideband bandpass filter

The Journal of Engineering

Santanu Das¹  Somdotta Roy Choudhury¹ 

[1] Department of Electronics and Telecommunication Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India

关键词: loss 1.8 dB;    defected microstrip structure;    frequency 2.1 GHz;    UWB BPF;    compact ultrawideb;    b;    pass hlter;    frequency 11.7 GHz;    attenuation pole;    end coupled microstrip transmission line;    observable transmission zeros;    midb;    insertion loss;    defected ground structure;   

DOI  :  10.1049/joe.2014.0202

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

A compact ultra-wideband (UWB) bandpass filter (BPF) is proposed based on end coupled microstrip transmission line, defected ground structure and defected microstrip structure. The experimental filter shows a fractional bandwidth of 110% at a centre frequency, with two observable transmission zeros (attenuation poles) at 2.1 and 11.7 GHz. Measured results exhibit an UWB passband from 3.02 to 10.6 GHz with mid-band insertion loss of 1.8 dB and group delay variation <0.45 ns. The BPF achieves a wide stopband with < −18 dB attenuation up to 20 GHz.

【 授权许可】

CC BY