Title :
A new miniaturized fractal bandpass filter based on dual-mode microstrip square ring resonator
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Technol., Baghdad
Abstract :
A novel fractal dual-mode microstrip bandpass filter design has been introduced in an attempt to produce filters with highly miniaturized size for modern wireless applications. The filter structure has been generated based on the 3rd iteration Minkowski-like pre-fractal geometry, using the conventional dual-mode square ring resonator as the initiator in the fractal generation process. The space-filling property, self-similarity and the diagonal symmetry of the structures corresponding to the successive iteration levels of this fractal geometry have found to produce reduced size filter structures with accepted performance. The bandpass filter structure produced by the 3rd iteration of this fractal geometry can be considered as a novel design with adequate performance. This design structure possesses a size reduction of about 72% compared with the conventional dualmode square ring resonator operating at the same frequency and using the same substrate material. In addition, the new design technique seems reliable, since it provides the filter designers with more degree of freedom and further size reduction as compared with those reported in the literatures.
Keywords :
band-pass filters; fractals; geometry; iterative methods; microstrip filters; microstrip resonators; resonator filters; 3rd iteration Minkowski-like pre-fractal geometry; diagonal symmetry; dual-mode microstrip square ring resonator; miniaturized fractal bandpass filter; self-similarity; space-filling property; wireless application; Band pass filters; Fractals; Frequency; Geometry; Microstrip filters; Microstrip resonators; Microwave filters; Optical ring resonators; Resonator filters; Shape; Microstrip bandpass filter; dual-mode resonator; filter miniaturization; fractal bandpass filter; square ring resonator;
Conference_Titel :
Systems, Signals and Devices, 2008. IEEE SSD 2008. 5th International Multi-Conference on
Conference_Location :
Amman
Print_ISBN :
978-1-4244-2205-0
Electronic_ISBN :
978-1-4244-2206-7
DOI :
10.1109/SSD.2008.4632887