A Compact High-Gain Dual-Circularly Polarized Antenna Based on High-Order Mode Microstrip Patch

Compact High-Gain Dual-CP Antenna

Authors

Keywords:

Patch antenna, circular polarization, high-order mode, high gain, dual-CP

Abstract

This paper presents a method to design a high-gain dual circularly polarized (CP) antenna with compact size based on high-order mode patch structure. For high-gain radiation, a square patch is excited to operate in high-order TM03 mode. To suppress grating lobes and reduce the overall size, four open slots are etched on the edges of the patch. For dual-CP realization, a 90◦ hybrid coupler is employed as the feeding network. By changing the feeding port, either right-hand CP (RHCP) or left-hand CP (LHCP) with high isolation can be produced. An antenna prototype with overall dimensions of 1.49 λ × 1.49 λ × 0.04 λ at 5.6 GHz is fabricated and measured for validation. The measurements demonstrate that the proposed design achieves good dual-CP performance around 5.6 GHz with a peak realized gain of approximately 12 dBi. In comparison with the high-gain dual-CP antennas using array or Fabry-Perot structures, the proposed approach has the advantage of achieving high gain with a compact and simple configuration.

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Author Biographies

Dieu Nguyen-Khanh, Phenikaa University

Khanh Dieu is currently an undergraduate student in Biomedical Engineering at Phenikaa University, Vietnam. Some of her research works have been published and presented at several national and international scientific conferences, including RIVF, REV, and ICCE. Her research interests include antenna design, compact antenna structures, and applications of antennas in biomedical engineering.

Dat Nguyen-Tien, Phenikaa University

Dat Tien Nguyen received the B.S. degree in electronics and telecommunications from HUST,Hanoi, Vietnam, in 2009, and the Ph.D. degree in electronics and electrical engineering from Dong-guk University, in 2015. He had been a Professor with the Division of Electronics and Electri-cal Engineering, Dongguk University, since March 2015 to Feb, 2023. From 2023, He has been with Phenikaa University. His research interests include image pro-cessing, biometrics, and deep learning. He super-vised this research and revised the original article.

Nguyen Tran, Phenikaa University

Nguyen Tran received a B.S. degree in Communication Command at Telecommunications University, Vietnam, in 2011. He received his M.S. degree in Electronics Engineering from Le Quy Don Technical University, Vietnam in 2017. He is currently an Assistant with Phenikaa University, Hanoi, Vietnam. His research interests are centered on antenna design and RF engineering, specifically focusing on the optimization of microstrip patch antennas and the development of wideband systems. His work also explores the implementation of circular polarization, metasurfaces for bandwidth enhancement on MIMO antennas.

Thai Nguyen-Dinh, Phenikaa University

Thai Dinh Nguyen received a B.S. degree in Communication Command at Telecommunications University, Vietnam, in 2010. He received his M.S. degree in Telecommunication Engineering from Posts and Telecommunications Institute of Technology, Vietnam in 2021. He is currently pursuing a Ph.D degree at Le Quy Don Technical University, Hanoi, Vietnam. His research interests have included reconfigurable antennas, MIMO antennas, and metamaterial-based antennas.

Niamat Hussain, James Watt School of Engineering

Niamat Hussain (Senior Member, IEEE) is a Lecturer (Assistant Professor) at the Division of Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, UK. Previously, he worked as an Assistant Professor in Intelligent Mechatronics Engineering at Sejong University, Korea (2022–2024). Dr. Niamat’s research expertise spans Antenna Engineering, including mmwave and THz antennas, metasurface and beamforming antennas; Microwave Engineering, such as wireless power transfer and Reflecting Intelligent Surfaces, and metamaterials; and Bioelectromagnetics, focusing on SAR reduction in wearable devices and the health effects of electromagnetic fields. Dr. Niamat’s work has been recognized globally. He has been featured among the World’s Top 2% Scientists (2021–2023) by Stanford University and received numerous other awards, including an endorsement as a UK Exceptional Talent in the field of Applied Electromagnetics, awarded to earlycareer world-leading innovators and scientists by the Royal Academy of Engineering under the UKBA Tier 1 program. Dr. Niamat is actively involved in professional activities, serving as an Associate Editor of the IEEE Internet of Things Journal, editorial board member for Electronics, Micromachines, IET Microwaves, Antennas, and Propagation, and guest editor for multiple prestigious journals. He is a senior member of IEEE and several professional societies, including the European Bioelectromagnetic Society, the Korean Society of Electromagnetic Engineering and Science, and a Member of the Evaluation Committee for National Research and Development Projects in South Korea. His research is dedicated to advancing technology with a strong focus on societal and environmental benefits.

Hung Tran-Huy, Phenikaa University

Hung Tran-Huy received the B.S. degree in electronics and telecommunications from Hanoi University of Science and Technology, Hanoi, Vietnam, in 2013. He received his M.S. and Ph. D. degrees in electrical engineering from Ajou University, in 2015, and Dongguk University, Korea, in 2020, respectively. He is currently a lecturer at Faculty of Electrical and Electronic Engineering, PHENIKAA School of Engineering, PHENIKAA University, Hanoi, Vietnam. His research interests have included circularly polarized antennas, MIMO antennas, metamaterial-based antennas, and reconfigurable antennas.

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Published

2026-03-14

How to Cite

Nguyen-Khanh, D., Nguyen-Tien, D., Tran, N., Nguyen-Dinh, T., Hussain, N., & Tran-Huy, H. (2026). A Compact High-Gain Dual-Circularly Polarized Antenna Based on High-Order Mode Microstrip Patch: Compact High-Gain Dual-CP Antenna. IEEE Latin America Transactions, 24(4), 395–401. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/10388

Issue

Vol. 24 No. 4 (2026): Ordinary Issue

Section

Electronics