Design of a Reconfigurable Filtenna with Constant Bandwidth for Enhanced 5G mmWave Communication and Spectrum Coexistence

• Published in: 2024 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) pp. 517 - 523
• Main Authors: Vosoughitabar, Shaghayegh, Mandayam, Narayan B., Brodie, Joseph F., Golparvar, Behzad, Wang, Ruo-Qian, Wu, Chung-Tse Michael
• Format: Conference Proceeding
• Language: English
• Published: IEEE 13.05.2024
• Subjects: 5G mobile communication; filtenna; millimeter wave (mmWave); passive spectrum coexistence; Resonant frequency; Resonator filters; substrate integrated waveguide (SIW); tunable filter; Varactors; Waveguide transitions; Wireless networks; Wireless sensor networks
• ISSN: 2473-070X
• DOI: 10.1109/DySPAN60163.2024.10632835

A reconfigurable substrate integrated waveguide (SIW) filtenna operating in the 5G millimeter Wave (mmWave) band is presented, where varactors are integrated into the filtering-antenna structure to change the resonant frequency and coupling between the SIW resonators. The proposed structure allows for the reconfigurability of the antenna radiation frequency band in the range of 24-27 \mathrm{GHz}, covering most of the 3GPP n258 band, with a constant bandwidth of 400 MHz and broadside radiation pattern. A prototype of the proposed mmWave filtenna is designed and fabricated, where the measurement results are in good agreement with the simulation. The proposed cost-effective and scalable filtenna is an ideal candidate for deployment in 5G wireless networks, with the ability to reduce adjacent channel interference (ACI) and enable passive spectrum coexistence with weather sensors in the 23.8 GHz band.