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Techniques to improve sharpness and stop band rejection of Defected Ground Structure based low pass filter

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2 Author(s)
Ashwani Kumar ; Microwave Research Laboratory, Department of Electronic Science University of Delhi South Campus, New Delhi-110021 (India) ; A. K. Verma

We propose a new technique to improve the sharpness and stopband rejection. This paper presents a more sharper and wide rejection band low pass filter using Defected Ground Structure (DGS). In this work DGS is realize as a quasi-lumped inductance and the sharpness of cut-off has been controlled by varying the slot neck length and stop band rejection by varying the slot neck width. Such findings are useful for the design of a compact LPF with sharper cutoff and wide stop band rejection.

Published in:

Applied Electromagnetics Conference (AEMC), 2011 IEEE

Date of Conference:

18-22 Dec. 2011