Design and Analysis of Frequency Switchable Dual Polarized Antenna for S-Band / WLAN Applications

Articles in Press

Document Type : Research Article

Authors

1 School of Electronics Engineering, Vellore Institute of Technology, Vellore, TamilNadu, 632014, India

2 School of Electronics Engineering, Vellore Institute of Technology, Vellore – 632014, India

3 Department of Electronics and Communication Engineering, KPR Institute of Engineering and Technology, Coimbatore - 641407 Tamil Nadu, India

Abstract

This article provides the design of a dual frequency, dual-polarized microstrip patch antenna using a Single Rectangular Loop (SRL) element. The proposed antenna has a physical footprint of 50 x 40 x 1.2 mm3 and a dielectric constant of 4.2. A single rectangular loop is placed with truncated corners on the inner patch to excite the right-hand circular polarization. The prototype is designed to operate in two modes with frequency and polarization re-configurability. The re-configurable mechanism is controlled by a pair of PIN diodes (BAR64-02V), which connect the inner patch and outer loop. In the ON state, the antenna exhibits right-hand circular polarization (RHCP) as a narrow-band antenna. It is capable of operating at frequencies between 5 GHz and 5.43 GHz. Furthermore, this device provides linear polarization (LP) in the frequency range of 3.75 GHz to 3.86 GHz. It exhibits 110 MHz of bandwidth in 3.8 GHz (S-band) and provides 430 MHz bandwidth in 5.2 GHz WLAN operating frequencies. The suggested antenna provides a maximum gain of 8.56 dBi. The antenna is fabricated and tested to prove its performance parameters. All the simulations are performed using high Frequency Structure(HFSS) software and results are presented with discussions.

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Scientia Iranica

Articles in Press, Accepted Manuscript
Available Online from 19 February 2025

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History

  • Receive Date: 02 July 2024
  • Revise Date: 14 October 2024
  • Accept Date: 19 February 2025

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