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Ultra‐wideband antenna system for in‐band full‐duplex applications

Hadi Hijazi 1, 2 Marc Le Roy 1 Raafat Lababidi 3, 4 Denis Le Jeune 5, 4 André Pérennec 1 
1 Lab-STICC_UBO_MOM_DIM
IBNM - Institut Brestois du Numérique et des Mathématiques, Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
2 Lab-STICC_ENSTAB_MOM_DIM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
3 Lab-STICC_DH - Equipe DH
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance : UMR6285
5 Lab-STICC_SI3 - Equipe Security, Intelligence and Integrity of Information
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance : UMR6285
Abstract : In this paper, we present an ultra-wideband full-duplex antenna system constituted of a wideband 4-element Vivaldi array and wideband microstrip-to-slotline baluns. The proposed system is characterized by its simplicity, high directivity, and high self-interference cancellation levels over a wide frequency bandwidth. The system is abricated using basic 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 x 8 cm x 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 (FoMWFD) dedicated to wide-band full-duplex antenna topologies is introduced in this paper.
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https://hal.univ-brest.fr/hal-03428256
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Submitted on : Monday, November 15, 2021 - 9:52:43 AM
Last modification on : Friday, August 5, 2022 - 2:54:52 PM
Long-term archiving on: : Wednesday, February 16, 2022 - 7:15:42 PM

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Hadi Hijazi, Marc Le Roy, Raafat Lababidi, Denis Le Jeune, André Pérennec. Ultra‐wideband antenna system for in‐band full‐duplex applications. IET Microwaves Antennas and Propagation, Institution of Engineering and Technology, 2021, pp.1-13. ⟨10.1049/mia2.12194⟩. ⟨hal-03428256⟩

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