Microstrip based UWB filter with controllable multiple notches and extended upper stopband

Author

Ghazali, Abu Nasar ; Pal, Shovon

Author_Institution

Dept. of ECE, Birla Inst. of Technol., Patna, India

fYear

2013

fDate

10-11 Oct. 2013

Firstpage

1

Lastpage

5

Abstract

Microstrip based ultra-wideband (UWB) bandpass filter (BPF) with controllable triple notches and simultaneously extended upper stopband is proposed. Initially an UWB filter based on back-to-back microstrip to co-planar waveguide (CPW) technology is constructed. Band notch property is integrated into the UWB filter by implementing complementary split ring resonators (CSRR) based defected ground structures (DGS) in the ground of this filter. Double equilateral-U (DEU) DGS etched under the input and output feeding lines suppress the spurious stopband harmonics and extend the stopband. An approximate lumped equivalent circuit model of the proposed structure is presented. Full wave and circuit simulations are in good agreement with measured results.

Keywords

circuit simulation; coplanar waveguides; defected ground structures; equivalent circuits; microstrip filters; notch filters; resonator filters; ultra wideband communication; waveguide filters; CPW technology; CSRR; DEU DGS etching; approximate lumped equivalent circuit model; band notch property; circuit simulation; complementary split ring resonator; controllable multiple notch; controllable triple notch; coplanar waveguide technology; defected ground structure; double equilateral-U etching; extended upper stopband; input feeding line suppression; microstrip based UWB BPF; microstrip based ultrawideband bandpass filter; output feeding lines suppression; spurious stopband harmonics; Attenuation; Band-pass filters; Bandwidth; Microstrip filters; Power harmonic filters; Resonant frequency; Resonator filters; Complementary split ring resonators (CSRR); defected ground structure (DGS); double equilateral-U (DEU); ultra-wideband (UWB);

fLanguage

English

Publisher

ieee

Conference_Titel

Emerging Trends in Communication, Control, Signal Processing & Computing Applications (C2SPCA), 2013 International Conference on

Conference_Location

Bangalore

Print_ISBN

978-1-4799-1082-3

Type

conf

DOI

10.1109/C2SPCA.2013.6749363

Filename

6749363