Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for n7 Band Applications

İbrahim Baş; Onur Hamza Karabey

doi:10.54287/gujsa.1911579

Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for n7 Band Applications

Abstract

This paper presents the design and full-wave simulation of a single-port dual-fed circularly polarized 1×4 microstrip patch antenna array for operation in the n7 band (2.620–2.690 GHz). In contrast to a conventional single-fed linearly polarized patch array, the proposed structure integrates a single-port corporate feed network with dual-feed excitation at each patch element to realize circularly polarized radiation while preserving a planar and manufacturable topology. The array is implemented on Rogers RT/duroid 5880 substrate with a relative permittivity of 2.2, loss tangent of 0.0009, and thickness of 1.524 mm. A single input port is divided into four branches, and each patch is excited through two feed points with an approximate 90° phase difference to support circularly polarized radiation. Full-wave simulations are carried out in CST Studio Suite to evaluate the impedance response, polarization performance, realized gain, and radiation characteristics of the array. The proposed design provides an axial-ratio value of 0.857 dB at 2.655 GHz, satisfying the commonly accepted 3-dB circular-polarization criterion, and achieves a realized gain of 13.1 dBi at the same frequency. In addition, the simulated results indicate a 3-dB axial-ratio angular region from 60° to 113.4°. These results show that the proposed array provides both high gain and improved polarization performance around the center frequency of the n7 band, making it a suitable candidate for sub-6 GHz wireless applications.

Keywords

References

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Details

Primary Language

English

Subjects

Antennas and Propagation

Journal Section

Research Article

Authors

İbrahim Baş ^*
0009-0008-1244-8001
Türkiye

Onur Hamza Karabey
0000-0001-5283-6107
Türkiye

Publication Date

June 30, 2026

Submission Date

March 17, 2026

Acceptance Date

June 8, 2026

Published in Issue

Year 2026 Volume: 13 Number: 2

DOI

https://doi.org/10.54287/gujsa.1911579

IZ

https://izlik.org/JA52XF79LA

Cite

RIS / Bibtex

APA

Baş, İ., & Karabey, O. H. (2026). Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for n7 Band Applications. Gazi University Journal of Science Part A: Engineering and Innovation, 13(2), 733-745. https://doi.org/10.54287/gujsa.1911579

AMA

1.Baş İ, Karabey OH. Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for n7 Band Applications. GU J Sci, Part A. 2026;13(2):733-745. doi:10.54287/gujsa.1911579

Chicago

Baş, İbrahim, and Onur Hamza Karabey. 2026. “Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for N7 Band Applications”. Gazi University Journal of Science Part A: Engineering and Innovation 13 (2): 733-45. https://doi.org/10.54287/gujsa.1911579.

EndNote

Baş İ, Karabey OH (June 1, 2026) Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for n7 Band Applications. Gazi University Journal of Science Part A: Engineering and Innovation 13 2 733–745.

IEEE

[1]İ. Baş and O. H. Karabey, “Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for n7 Band Applications”, GU J Sci, Part A, vol. 13, no. 2, pp. 733–745, June 2026, doi: 10.54287/gujsa.1911579.

ISNAD

Baş, İbrahim - Karabey, Onur Hamza. “Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for N7 Band Applications”. Gazi University Journal of Science Part A: Engineering and Innovation 13/2 (June 1, 2026): 733-745. https://doi.org/10.54287/gujsa.1911579.

JAMA

1.Baş İ, Karabey OH. Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for n7 Band Applications. GU J Sci, Part A. 2026;13:733–745.

MLA

Baş, İbrahim, and Onur Hamza Karabey. “Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for N7 Band Applications”. Gazi University Journal of Science Part A: Engineering and Innovation, vol. 13, no. 2, June 2026, pp. 733-45, doi:10.54287/gujsa.1911579.

Vancouver

1.İbrahim Baş, Onur Hamza Karabey. Design and Simulation of a Dual-Fed Circularly Polarized 1×4 Microstrip Patch Array for n7 Band Applications. GU J Sci, Part A. 2026 Jun. 1;13(2):733-45. doi:10.54287/gujsa.1911579