Design of a Compact Rectangular Patch Antenna Using Defected Ground Structure

Kishore Kumar Kamarajugadda(1*), Pavani Movva(2)

(1) Head of Department, ECE ICFAI Tech School IFHE University, India
(2) ECE Department ICFAI Tech School IFHE University, India
(*) Corresponding author

DOI's assignment:
The DOI number for this article will be assigned as soon as the final version of the IRECAP Vol 7, No 4 (2017) issue will be available

Abstract


This paper presents the design of low cost compact coaxial fed rectangular patch antennas with the Defected Ground Structure (DGS).The proposed two metamaterial DGS antennas operate at resonating frequencies of 4.7 GHz and 2.4 GHz and they showed the reduction in size while having considerable performance. A microstrip patch antenna finds its application in WLAN, WiMAX and Wifi in wireless communication services.The performance measures of conventional and DGS antennas had been simulated and analysed in Computer Simulation Technology Microwave Studio (CSTMWS). Prototypes of the coaxial fed rectangular patch antennas operating at 4.7 GHz and 2.4 GHz are fabricated and measured for the experimental validation of the simulation results of the designs. Both the simulation and measurement results showed that the DGS structures improved the performance of the proposed model and the results suggest that DGS reduced the antenna size up to 34.3%  for 4.75 GHZ and 80%  for the 2.4 GHz.
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Keywords


Microstrip Patch Antenna; Operating Frequency; Antenna Gain; VSWR; Radiation Pattern; Beamwidth; Directivity



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