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Low-pass filter with deep and wide stop band and controllable rejection bandwidth

Published online by Cambridge University Press:  24 April 2014

Dusan A. Nesic ,
Branko M. Kolundzija ,
Dejan V. Tošić  and
Dario S. Jeremic
Dusan A. Nesic*
Affiliation:
University of Belgrade, IHTM-CMTM, Njegoseva 12, 11000 Belgrade, Serbia. Phone: +381-11-2630757, +381-11-630 757
Branko M. Kolundzija
Affiliation:
University of Belgrade, School of Electrical Engineering, Bul. King Alexander 73, Serbia
Dejan V. Tošić
Affiliation:
University of Belgrade, School of Electrical Engineering, Bul. King Alexander 73, Serbia
Dario S. Jeremic
Affiliation:
WIPL-D d.o.o., Gandijeva 7, 11000 Belgrade, Serbia
*
Corresponding author: D. A. Nesic Email: nesicad@nanosys.ihtm.bg.ac.rs
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Abstract

Novel design of low-pass microwave filters based on cascading of identical unit cells is proposed. Dispersion relation is used to determine the cell parameters for a given relative stop-band width. For a filter consisting of two cells, each made of single- or two-section transmission lines, the design formulas and curves are presented. Based on them typical filters are designed, fabricated, and measured. The presented filters feature a deep stop band and a wide rejection band, which can be controlled within the proposed design procedure. The design procedure and the simulation results are verified experimentally by measurement of the fabricated structures containing two and three cells.

Keywords

FiltersPassive components and circuits
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 7 , Issue 2 , April 2015 , pp. 141 - 149
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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References

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