Design and Research of Miniaturized Micro Strip Slot with and without Defected Ground Structure
D. Nataraj1, G. Karunakar2

1D. Nataraj, Associate Professor, Department of ECE, Pragati Engineering College A3, Surampalem, Kakinada (A.P), India.
2Dr. G. Karunakar, Associate Professor, Department of  ECE, Gitam Institute of Technology, GITAM University, Vizag (A.P), India.
Manuscript received on 10 October 2019 | Revised Manuscript received on 19 October 2019 | Manuscript Published on 02 November 2019 | PP: 391-398 | Volume-8 Issue-2S11 September 2019 | Retrieval Number: B10600982S1119/2019©BEIESP | DOI: 10.35940/ijrte.B1060.0982S1119
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Abstract: In this paper, a compact microstrip patch has a slot associated with the Defected Ground Structure radiator is presented. Instead of semi-infinite ground plane, the proposed antenna adopts the defected ground plane. The Radiating patch mendacity on the FR-4 substrate which is having dielectric constant of 4.4, thereby provides good bandwidth. This microstrip antenna is designed for wide bandwidth applications in range of 5.5GHz to 7.25GHz. Proposed work introduces a methodology wherein reducing of structure’s increase the bandwidth as well as return loss with defected ground structure (DGS).However since communication systems require small size, broad band and multiband antennas, monopoles have to be ensued for fabricating broad-band and wide-band antennas. In the proposed work investigations are carried out to design a new antenna with broad-band properties. Simulations are carried out via An soft HFSS electromagnetic simulator software- fabricated on FR-4 Substrate and tested with Vector network Analyzer. Measurement and Simulation results obtained prove the applicability of proposed antenna in 5.5GHz to 7.25GHz frequency range with a return loss of -31.3dB and 11.5dB etc. Microstrip feed line technique is used to feed the antenna with 50Ω impedance.
Keywords: Defected Ground Structure (DGS) Elliptical, Microstrip Antenna, Microstrip Slot Antenna, WiMAX, Radiation Pattern.
Scope of the Article: Microwave Link Design