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

The Journal of Engineering

  ^{1    1} 

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

关键词: band-pass filters;    ultra wideband technology;    coupled transmission lines;    microstrip couplers;    microstrip lines;    defected ground structures;    microstrip filters;    microwave filters;    UHF filters;    compact ultrawideband bandpass hlter;    UWB BPF;    end coupled microstrip transmission line;    defected ground structure;    defected microstrip structure;    observable transmission zeros;    attenuation pole;    midband insertion loss;    frequency 2.1 GHz;    frequency 11.7 GHz;    loss 1.8 dB;   

DOI  :  10.1049/joe.2014.0202

来源: publisher

【 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