Design of a Microstrip Line Fed SIW Ring Antenna with Sixth-Order Circular Polarized Conical Pattern | Zendy

Umar Fayyaz | Zendy; Shahab Ahmad Niazi | Zendy; Khaled Al-Jaloud | Zendy; Waqar Ahmad Malik | Zendy; Abdul Aziz | Zendy; Rifaqat Hussain | Zendy; Ali H. Alqahtani | Zendy; Akram Alomainy | Zendy

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Design of a Microstrip Line Fed SIW Ring Antenna with Sixth-Order Circular Polarized Conical Pattern

Author(s) -

Umar Fayyaz,

Shahab Ahmad Niazi,

Khaled Al-Jaloud,

Waqar Ahmad Malik,

Abdul Aziz,

Rifaqat Hussain,

Ali H. Alqahtani,

Akram Alomainy

Publication year - 2025

Publication title -

ieee access

Language(s) - English

Resource type - Magazines

SCImago Journal Rank - 0.587

H-Index - 127

eISSN - 2169-3536

DOI - 10.1109/access.2025.3593651

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

This paper presents the design of a microstrip line-fed substrate-integrated waveguide (SIW) ring antenna designed to excite a sixth-order circularly polarized conical radiation pattern. Characteristic mode theory indicates that antennas can theoretically support an infinite number of Orbital Angular Momentum (OAM) modes; however, practically exciting higher-order OAM beams introduces significant challenges. This work addresses the difficulties associated with generating higher-order OAM waves using a single patch antenna by proposing a straightforward design featuring a single-ring radiator with vias positioned on its inner side. A comparative analysis highlights the advantages of the SIW configuration in effectively realizing the left hand circularly polarized (LHCP) OAM beam with sixth mode order from the proposed antenna. The dual feed single port mechanism successfully radiates the desired radiation pattern at 6.55 GHz, making the design suitable for satellite communication applications. The validation of the theoretical analysis is demonstrated through the prototype, which shows good agreement between simulation and measured performance parameters. The simplicity of the antenna’s configuration, combined with its enhanced radiation performance, distinguishes it from existing designs and offers a promising solution for practical implementation in OAM-based communication systems.

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