High-performance multiport antenna with frequency selective surface for 5g ka-band applications

Alibakhshikenari, Mohammad, Din, Iftikhar ud, Elmunim, Nouf Abd, Virdee, Bal S., Kumar, Sunil, Ullah, Chaudhary, Muhammad Akmal, Abbasi, Nisar Ahmad, See, Chan Hwang, Limiti, Ernesto, Saber, Takfarinas. (2025). High-Performance Multiport Antenna With Frequency Selective Surface for 5G Ka-Band Applications. Radio Science, 60(11), e2025RS008350. https://doi.org/10.1029/2025RS008350

Abstract

This paper presents a novel multiport antenna tailored for 5G millimeter-wave (mm-Wave) applications. The proposed design features orthogonally arranged radiating elements to ensure compactness with an overall footprint of just 20 × 26 mm2. A key innovation is the integration of a frequency selective surface (FSS) layer placed above the antenna system to enhance gain and isolation without increasing complexity. This FSS enhances gain by 1.5 dB across the band, achieving a peak gain of 7.5 dBi at 41 GHz. The antenna operates across the entire Ka-band (22–46 GHz), delivering efficiency exceeding 80% and maintaining isolation above 20 dB. Key multiport antenna performance parameters including diversity gain (DG = 10) and envelope correlation coefficient (ECC <0.005) align with performance benchmarks, and experimental measurements validate simulation results. The unique combination of orthogonal element placement and FSS enhancement positions this antenna as a robust solution for next-generation 5G applications.

Funder

European Union
Taighde Éireann‐Research Ireland
University of Galway
Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia

Publisher

Wiley and American Geophysical Union

Rights

CC BY

cb

Collections

Computer Science (Scholarly Articles)