A Planar High-gain Circularly Polarized Dipole Antenna Based on PRAMC for 2.45 GHz ISM Band

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Published: Jul 10, 2026
DOI: https://doi.org/10.7716/aem.v15i2.2926
URL: https://aem.org.cn/article/article_1785864432820_b8c6ad1970
Keywords:
High gain circular polarized (CP) dipole antenna polarization rotation artificial magnetic conductor (PRAMC)

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X. H. Yang
Kunming University of Science and Technology
Y. Z. Ma
Kunming University of Science and Technology
Z. Chen
Kunming University of Science and Technology
Y. Li
Kunming University of Science and Technology
H. Chen
Kunming University of Science and Technology
Q. Fang
Kunming University of Science and Technology; Shaanxi Institute of Advanced Oeic Technologies Co., Ltd.
A. N. Yang
Kunming University of Science and Technology
S. Feng
Xi'an Polytechnic University

Abstract

This paper presents a novel planar circularly polarized (CP) dipole antenna for 2.45 GHz ISM band wireless communications based on a polarization rotation artificial magnetic conductor (PRAMC). The design evolution begins with a linearly polarized (LP) dipole antenna, followed by the dipole antenna loaded with a 2×2 AMC array, and culminates in the proposed CP dipole antenna incorporating a 2×2 PRAMC array. Unlike conventional AMC arrays that only enhance gain, the proposed PRAMC array can convert LP radiation to CP radiation and further enhance the gain of the dipole antenna. Measured results indicate that the proposed antenna has the −10 dB impedance bandwidth (BW) of 29.8% (2.21–2.94 GHz), the 3 dB axial ratio (AR) BW of 7.0% (2.35–2.52 GHz), a peak gain of 7.01 dBi, indicating left-hand CP (LHCP) at 2.45 GHz. Finally, the experimental results validate that the proposed PRAMC can convert a low-gain LP dipole antenna into a high-gain CP dipole antenna.

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How to Cite
X. H. Yang, Y. Z. Ma, Z. Chen, Y. Li, H. Chen, Q. Fang, A. N. Yang, S. Feng. "A Planar High-gain Circularly Polarized Dipole Antenna Based on PRAMC for 2.45 GHz ISM Band." Advanced Electromagnetics, vol. 16, no. 3, 2026, pp. 29-38. https://doi.org/10.7716/aem.v15i2.2926.
Issue
Vol.16 No. 3(2026)
Section
Research Articles
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