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Design and Performance Analysis of UWB Circular Ring Antenna with Defected Ground Structure


Affiliations
1 Department of Electronics Engineering, Rajasthan Technical University, India
     

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A compact circular ring antenna with defected ground structure (DGS) has been design for Ultra-Wide Band (UWB) applications. Initially, a circular patch antenna is design by introducing a rectangular DGS structure. Further, slot has been inserted in circular patch to improve the impedance bandwidth. The proposed design covers the frequency range of 2.4-10.4GHz below -10dB. Proposed antenna has design and fabricated on FR-4 substrate having 1.5mm, 4.3 thickness and dielectric constant, respectively. The performance of the designed antenna is analyzing with optimized dimensions in terms of return loss, VSWR, radiation pattern, gain characteristics, group delay and surface current distributions. Further, performance analysis of the proposed antenna has also been compared with existing suggested antennas in literature with compact in size. The fabricated antenna shows a good result with simulations software.

Keywords

Circular Ring, Defected Ground Structure, Fractional Bandwidth, Micro-Strip, Ultra-Wideband.
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  • Design and Performance Analysis of UWB Circular Ring Antenna with Defected Ground Structure

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Authors

Neha Tanzeem Sagar
Department of Electronics Engineering, Rajasthan Technical University, India
M. L. Meena
Department of Electronics Engineering, Rajasthan Technical University, India
Pankaj Shukla
Department of Electronics Engineering, Rajasthan Technical University, India

Abstract


A compact circular ring antenna with defected ground structure (DGS) has been design for Ultra-Wide Band (UWB) applications. Initially, a circular patch antenna is design by introducing a rectangular DGS structure. Further, slot has been inserted in circular patch to improve the impedance bandwidth. The proposed design covers the frequency range of 2.4-10.4GHz below -10dB. Proposed antenna has design and fabricated on FR-4 substrate having 1.5mm, 4.3 thickness and dielectric constant, respectively. The performance of the designed antenna is analyzing with optimized dimensions in terms of return loss, VSWR, radiation pattern, gain characteristics, group delay and surface current distributions. Further, performance analysis of the proposed antenna has also been compared with existing suggested antennas in literature with compact in size. The fabricated antenna shows a good result with simulations software.

Keywords


Circular Ring, Defected Ground Structure, Fractional Bandwidth, Micro-Strip, Ultra-Wideband.

References