Square RR Loaded Microstrip Patch Antenna for ISM Band Applications

Authors Pronami Bora, P. Pardhasaradhi , B.T.P. Madhav

Antennas and Liquid Crystals Research Center, Department of ECE, Koneru Lakshmaiah Education Foundation, Vaddeswaram, A.P. India

Е-mail pronamiz@gmail.com
Issue Volume 14, Year 2022, Number 2
Dates Received 12 December 2021; revised manuscript received 25 April 2022; published online 29 April 2022
Citation Pronami Bora, P. Pardhasaradhi, B.T.P. Madhav, J. Nano- Electron. Phys. 14 No 2, 02024 (2022)
DOI https://doi.org/10.21272/jnep.14(2).02024
PACS Number(s) 84.40.Ba
Keywords Dual band, Microstrip (4) , Ring resonator (RR), Square (2) .

In this paper, a closed square ring resonator (RR) loaded microstrip patch antenna is proposed for ISM band applications covering a frequency band of 2.2-2.5 GHz. The advantages of microstrip antennas are light weight, low cost, ease of fabrication, and they can be integrated easily with microwave integrated circuits. The presented antenna model is designed by loading it in FR-4 substrate which is sandwiched between the patch and the ground with feedline of 50 Ω. The height of the substrate is taken as 1.6 mm with the dielectric constant of 4.4, and the proposed design is fabricated on 40  50 mm2 substrate. A square patch with dimensions of 25  25 mm2 is loaded with closed RRs for the enhancement of gain and radiation pattern. Ansoft High Frequency Structure Simulator which is based on the finite element method (FEM) is used to obtain the simulated parameters of the model for the frequency range of 2.2-2.5 GHz. Parametric analysis is also done to get the optimized parameters for fabrication. Optimized parameters for feed length and width of RR are obtained by increasing and decreasing the dimensions of the above-mentioned parameters. Measurements confirm the characteristics of the fabricated antenna as speculated with the simulation results with a little shift in frequencies. The proposed antenna can be used for WiFi, WLAN and ISM band applications.

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