Title :
A new narrow band dual-mode microstrip slotted patch bandpass filter design based on fractal geometry
Author :
Mezaal, Y.S. ; Eyyuboglu, H.T.
Author_Institution :
Dept. of Electron. & Commun. Eng., Cankaya Univ., Ankara, Turkey
Abstract :
A narrowband, compact, and easily fabricated microstrip bandpass filter design is introduced in this paper as a candidate for use in modern wireless systems. The proposed filter design is based on the use of dual-mode (two pole) square slotted microstrip resonator. This microstrip bandpass filter has the advantages of possessing much narrower and sharper performance responses than those of the single mode resonator and conventional square patch filter. The proposed microstrip filter structure is fractally generated using Sierpinski fractal curve geometry applied to the conventional square microstrip patch. Filter structures resulting from the successive iterations in the fractal generation process show a considerably low insertion loss, and sharper response of about 1% fractional bandwidth as compared with the conventional microstrip square patch filter of 3% fractional bandwidth designed at the same frequency using the same substrate material. The performance of filter structures, based on dual-mode resonators up to the third iterations, has been evaluated using a full-wave based electromagnetic simulator Sonnet software package. Performance simulation results show that these filter structures offer narrower fractional bandwidth percentages as compared with other types of non- fractalized filter structures.
Keywords :
band-pass filters; fractals; microstrip filters; microstrip resonators; resonator filters; Sierpinski fractal curve geometry; Sonnet software package; dual-mode square slotted microstrip resonator; filter structures; fractal generation process; full-wave based electromagnetic simulator; low insertion loss; microstrip filter structure; microstrip square patch filter; narrowband dual-mode microstrip slotted patch bandpass filter design; nonfractalized filter structures; single mode resonator; wireless systems; Microstrip filter; Sierpinski fractal geometry; narrow bandpass filter; slotted patch bandpass filter;
Conference_Titel :
Computing and Convergence Technology (ICCCT), 2012 7th International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0894-6