A transformed radial stub low-pass filter using defected ground structure for stopband extension
Yeo, Kiat Seng
Date of Issue2014
2014 International SoC Design Conference (ISOCC)
School of Electrical and Electronic Engineering
The paper presents a low-pass filter using defected ground structure for stopband enhancement. The face-to-face E shape defected ground structure is investigated using EM simulation, which are co-designed with transformed radial stub low-pass filter to extend the stopband. The fabricated filter demonstrates a passband insertion loss of less than 1 dB, a wide stopband with more than 20 dB rejection up to 16ƒc (ƒc is the cut-off frequency of 2.4 GHz), a passband return loss of better than 20 dB, and a compact size of 5×1.3 cm2 only.
DRNTU::Engineering::Electrical and electronic engineering
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