Open AccessUltra‐wideband antenna system for in‐band full‐duplex applications
Author(s) -
Hijazi Hadi,
Le Roy Marc,
Lababidi Raafat,
Le Jeune Denis,
Pérennec Andre
Publication year - 2021
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/mia2.12194
Subject(s) - wideband , electronic engineering , balun , bandwidth (computing) , vivaldi antenna , ultra wideband , microstrip , electrical engineering , microstrip antenna , computer science , engineering , antenna (radio) , telecommunications , antenna measurement
In this study, we present an ultra‐wideband full‐duplex system constituted of a wideband 4‐element Vivaldi array and wideband microstrip‐to‐slotline baluns. The proposed system is characterised by its simplicity, high directivity, and high self‐interference cancellation levels over a wide frequency bandwidth. The system is fabricated using basic printed‐circuit board (PCB) technology and can provide at least 50 dB of self‐interference cancellation over the bandwidth of operation, 4–40 GHz, with an average gain of 7.8 dBi. The system has a size of 8 cm × 8 cm × 9.4 cm and can be used as a high data rate link between two distant wireless nodes. To assess the merits of the proposed system and compare it to other published works, a new figure of merit (FoM WFD ) dedicated to wide‐band full‐duplex antenna topologies is introduced in this study.