DGS (Defected ground structure) unified with square patch antenna is inspected using uniformity and non-uniformity structure. In this study, without affecting the dominant mode, input impedance and copol an air gap analysis between patch and defect in the ground plane has done to suppress cross polarization (X-pol.). The resonant frequency is 3.1GHz and X-pol. is suppressed approximately up to-13dB by increasing the gap of defect. © 2017 IEEE.

Yogesh Kumar Choukiker

Department of Communication Engineering

School of Electronics Engineering

Vellore Campus

Husna Khouser

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

2017 International conference on Microelectronic Devices, Circuits and Systems (ICMDCS)

Microstrip and Printed Antennas

Reconfigurable Microstrip Antennas

Application of defected ground structure (DGS) to suppress cross-polarized (XP) radiation from a microstrip patch antenna has been reinvestigated using a new DGS geometry for much improved characteristics. Arc-shaped defect has been used in pair, symmetrically located under a circular patch. A number of optimization parameters have been examined using simulated results, leading to a design indicating improved XP behavior. A set of identical prototypes, with and without DGS, have been experimentally studied. The presence of the DGS shows as much as 30 dB isolation of the XP level from its peak radiation, and that compared to an identical patch without DGS indicates an improvement by as much as 12 dB. The relative suppression in XP values are found to be around 7-12 dB over ±75° elevation around the boresight of the patch. © 2010 IEEE.

IEEE Antennas and Wireless Propagation Letters

Improved cross-polarization characteristics of circular microstrip antenna employing arc-shaped defected ground structure (DGS)

IEEE Microwave and Wireless Components Letters

Miniaturized microstrip lowpass filter with wide stopband using double equilateral U-shaped defected ground structure

A defected ground structure (DGS) is proposed to reduce the cross-polarized (XP) radiation of a microstrip patch antenna. The proposed DGS pattern is simple and easy to etch on a commercial microstrip substrate. This will only reduce the XP radiation field without affecting the dominant mode input impedance and co-polarized radiation patterns of a conventional antenna. The new concept has been examined and verified experimentally for a particular DGS pattern employing a circular patch as the radiator. Both simulation and experimental results are presented. © 2005 IEEE.

Microstrip patch antenna with defected ground structure for cross polarization suppression

Electronics Letters

Crosspolarisation characteristics of circular patch antennas

Cross polarization reduction using DGS in microstrip patch antenna

Journal	Data powered by Typeset2017 International conference on Microelectronic Devices, Circuits and Systems (ICMDCS)
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