A Multi-Mode Pattern Diverse Microstrip Patch Antenna Having a Constant Gain in the Elevation Plane

Kamil Karaçuha*, Feza Turgay Çelik, Halil Ismail Helvaci

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This study investigates a multi-mode pattern diverse microstrip patch antenna operating at 2.45 GHz. The study aims to have a flat top gain covering more than 900 in the elevation plane to provide equal service quality to everyone in the region of interest. In order to achieve such a crucial goal, the cavity model approach for the rectangular patches is employed. TM01 and TM02 modes are selected for the design since their corresponding radiation patterns are suitable for scanning a wide range. The superposition of boreside and conical (monopole-like) beams form a wide beam radiation pattern in elevation. Coupling between different modes is reduced by placing two radiators perpendicular to each other. In addition, the design aims to reduce both initial dimensions of the antenna by using fractalization, slotting, and perpendicular positioning techniques. These techniques reduce the original dimension of the design to less than its 60%. The simulation and experimental results reveal many similarities regarding the scattering parameters, radiation patterns, and gain. The scattering parameters, |S11 | and |S22 | at the operating frequency, are less than-10 dB, and the wide beam radiation pattern (more than 900) is obtained in the elevation plane.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalAdvanced Electromagnetics
Issue number4
Publication statusPublished - 12 Nov 2023

Bibliographical note

Publisher Copyright:
© 2023, Advanced Electromagnetics. All rights reserved.


The authors of the paper would like to express their gratitude to ˙rem Bozkurt, Damla Alptekin Soydan, and Prof. Dr. Özlem Aydın Çivi. This work is supported in part by Istanbul Technical University (ITU) Vodafone Future Lab under Project No. ITUVF20180901P10.

FundersFunder number
İTÜ Vodafone Future LabITUVF20180901P10
Istanbul Teknik Üniversitesi


    • Antenna Design
    • Flat-top Beam
    • Miniaturization
    • Mode analysis
    • Wide Beam Radiation


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