Quasi-Optical Directional Coupler Based on 3D-Printed Dielectric Image Lines for sub-THz Applications

Hahn L, Bürk L, Zhu Y, Carlowitz C, Gold G, Ellinger F, Vossiek M (2024)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2024

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 208-211

Conference Proceedings Title: 2024 54th European Microwave Conference (EuMC)

Event location: Paris FR

ISBN: 9782874870774

DOI: 10.23919/EuMC61614.2024.10732689

Abstract

This paper presents a 3D-printed dielectric directional coupler for the sub-THz band from 140GHz to 220GHz. In contrast to conventional coupling approaches, a quasi-optical operating principle is implemented, which is based on the insertion of a thin dielectric boundary within a dielectric image guide. Due to an intended permittivity shift, the boundary layer acts as a wavesplitter for incident HE11 waves, whose partial reflections are selectively controllable via material or geometry parameters. This results in significant advantages in terms of achievable bandwidth and required dimensions, while manufacturing costs and complexity are minimized at the same time using additive manufacturing. The realized coupler exhibits broadband matching of approx. 20dB, with high isolation of 25dB and achieves freely configurable, reproducible broadband coupling attenuation between 5dB and 15dB. Due to the remarkable simplicity and small size of the concept, this demonstrates a promising key component for low-loss, large-scale, dielectric sub-THz signal distribution networks.

Authors with CRIS profile

Leonhard Hahn Lehrstuhl für Hochfrequenztechnik (LHFT) Lukas Bürk Lehrstuhl für Hochfrequenztechnik (LHFT) Christian Carlowitz Lehrstuhl für Hochfrequenztechnik (LHFT) Gerald Gold Professur für Rechnergestützten Schaltungsentwurf Martin Vossiek Lehrstuhl für Hochfrequenztechnik (LHFT)

Involved external institutions

Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Hahn, L., Bürk, L., Zhu, Y., Carlowitz, C., Gold, G., Ellinger, F., & Vossiek, M. (2024). Quasi-Optical Directional Coupler Based on 3D-Printed Dielectric Image Lines for sub-THz Applications. In 2024 54th European Microwave Conference (EuMC) (pp. 208-211). Paris, FR: Institute of Electrical and Electronics Engineers Inc..

MLA:

Hahn, Leonhard, et al. "Quasi-Optical Directional Coupler Based on 3D-Printed Dielectric Image Lines for sub-THz Applications." Proceedings of the 54th European Microwave Conference, EuMC 2024, Paris Institute of Electrical and Electronics Engineers Inc., 2024. 208-211.

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