Design of a Multi-Band, Dual-Sense Polarization Reconfigurable Mushroom Shape Patch Antenna

Articles in Press

Document Type : Research Article

Authors

Department of ECE, Malaviya National Institute of Technology, Jaipur, India

10.24200/sci.2025.64541.9002

Abstract

This manuscript unveils a novel approach to crafting a reconfigurable circularly polarized patch antenna, facilitating its operation across various frequency bands (ITS/WLAN/INSAT). The technique involves using a circular patch with defected ground having slotted symmetrical slits and two p-i-n diodes, which can switch between ON and OFF states to achieve far-field polarization reconfigurability among linear polarization (LP), right-hand circular polarization (RHCP), and left-hand circular polarization (LHCP). The antenna has been fabricated and shows good matching with the simulated results, indicating its potential for use in various wireless communication applications. The measured bandwidth (|S11|<-10dB) of the proposed antenna is 19.81% and 10% for the two LP modes, while the 3dB axial ratio bandwidth spans 4.56% and 8.33% for the two CP modes. Within these two bands, circularly polarized radiation with opposite polarization states is achieved, aligning with the impedance matching band (|S11|<-10dB). The designed antenna exhibits a peak gain of approximately 3.5 dBi and 2.9 dBi within the 3 dB axial ratio bandwidths in the lower and upper bands, respectively.

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Main Subjects

Scientia Iranica

Articles in Press, Accepted Manuscript
Available Online from 12 May 2025

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History

  • Receive Date: 09 May 2024
  • Revise Date: 06 November 2024
  • Accept Date: 13 April 2025

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