Air-filled Substrate-Integrated Waveguide Technology for Broadband and Highly-Efficient Photonic-Enabled Antenna Systems

Sam Lemey, Olivier Caytan, Quinten Van den Brande, Igor Lima de Paula, Laurens Bogaert, Li Haolin, Joris Van Kerrebrouck, Ad C.F. Reniers, A.B. Smolders, J.M.R. Bauwelinck, Piet Demeester, Guy Torfs, Dries Vande Ginste, Steven Verstuyft, Bart Kuyken, Hendrik Rogier

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


The combination of microwave photonics, radio-over-fiber (RoF) and air-filled substrate-integrated-waveguide (AFSIW) technology opens many promising pathways to realize robust, broadband, and highly-integrated multi-antenna systems that address the stringent demands of (beyond-)5G wireless applications. In this paper, we demonstrate the potential of such a multi-disciplinary approach by discussing three designs. First, two AFSIW-based photonic-enabled remote antenna units (RAUs) are presented for downlink sub-6GHz RoF. By adopting an extensive full-wave/circuit co-simulation model, the power transfer between the optical and electrical domain is maximized. In the first design, this is done by using a Chebyshev impedance matching network, while the second design exploits conjugate matching. Second, a hybrid integration strategy for compact, broadband and highly efficient mmWave antennas is introduced. Its excellent performance is proven by realizing an on-chip AFSIW stacked patch antenna. In addition, the design facilitates compact integration of the opto-electronic front-end, making it attractive for the realization of next-generation photonic-enabled mmWave planar multi-antenna systems.
Original languageEnglish
Title of host publication2020 33rd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2020
Number of pages4
ISBN (Electronic)9789463968003
Publication statusPublished - 20 Oct 2020

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