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April 10, 2026International Journal of Engineering & TechnologyOpen Access

Circularly Polarized Rectangular Microstrip Patch Antenna with Diagonal Asymmetric Slits

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Authors

SDSugumar. DTGThennarasi GATAnita Jones T

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Overview

This investigation demonstrates improved bandwidth and impedance matching in RFID applications using a novel antenna design.

Key Points

  • The aim is to design and analyze a circularly polarized microstrip patch antenna suitable for RFID applications.
  • Designed with asymmetric slits along the diagonal corners.
  • Analyzed performance across three different substrates: Rogers, RT-DUROID, and FR4.
  • Simulated using CADFEKO 7.
  • Evaluated for circular polarization and return loss, VSWR, and gain.
  • Achieved circular polarization with an axial ratio of 1.
  • FR4 substrate exhibited optimal performance based on return loss (> -10 dB), VSWR (< 2), and gain (> 2 dB).
  • The antenna operates effectively at a frequency of 2.4 GHz, suitable for RFID.

Cite This Study

D et al. (2026) studied this question.

synapsesocial.com/papers/69d892d16c1944d70ce03f92https://doi.org/10.14419/ijet.v7i4.6.28561
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