Miniaturization of Patch Antenna using Complementary Split Ring Resonator
DOI:
https://doi.org/10.46610/JoRFMCT.2026.v03i02.003Keywords:
Complementary split ring resonator (CSRR), High-frequency structure simulator (HFSS), Metamaterial, Microstrip antenna, MiniaturizationAbstract
This work presents antenna miniaturization by employing a Complementary Split Ring Resonator (CSRR) and a comparative study between a conventional antenna and a metamaterial antenna, analyzed and fabricated for a Wi-Fi communication system. The primary objective of this work is to reduce the antenna size by maintaining its operating frequency and radiation characteristics. Initially, a conventional reference antenna was designed to resonate at 2.4 GHz. To attain miniaturization, a square CSRR structure was etched on the ground plane of the antenna. Employing a single CSRR results in a slight shift of the resonant frequency to 2.41 GHz with a noticeable reduction in antenna size. Further, enhancement in miniaturization was achieved by etching two square CSRRs on the ground plane without affecting its performance. This modified antenna exhibits significant size reduction. By introducing a single CSRR, an overall size reduction of 54.17% was achieved, while introducing two CSRRs resulted in a size reduction of 60.42%, compared to a conventional microstrip patch antenna. By preserving desired operating characteristics, the CSRR structure effectively alters the electromagnetic properties of the antenna while remaining compact in size. This simulation work is carried out using ANSYS HFSS 15 software.
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