Wideband Filtering Patch Antenna Design for cmWave 6G Applications
Authors:
Duy Hai Nguyen, Martin Jacob, Arslan Azhar, Thomas Käubler
Abstract:
This paper presents a dual-polarized planar patch antenna design for 6G applications in the cmWave frequency
band. The antenna is fabricated using a low-cost, low-loss multilayer RF laminate, achieving a radiation
efficiency of 92%. A wide impedance bandwidth of 20% is realized through differential L-probe feeds. To
suppress unwanted radiation in the mmWave band (24.25–27.5 GHz), shorting pins are introduced at the feed
structure. The antenna’s performance is validated through measurements, including radiation pattern
characteristics and a practical demonstration of analog beam steering using a Butler matrix. Furthermore, a
post-processing technique is discussed to filter unwanted radiation artifacts caused by measurement setups,
enabling more accurate far-field characterization.
