3D-Printed Broadband Dielectric Image Line Splitters for sub-THz Applications

Hahn L, Gloßner M, Bürk L, Carlowitz C, Gold G, Vossiek M (2025)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2025

Publisher: IEEE Computer Society

Pages Range: 67-70

Conference Proceedings Title: 2025 IEEE Radio and Wireless Symposium (RWS)

Event location: San Juan, PR

ISBN: 979-8-3503-7775-0

DOI: 10.1109/RWS62086.2025.10904841

Abstract

This paper reports on efficient, broadband 3D-printed dielectric splitters for sub-THz applications between 140 GHz and 220 GHz. In contrast to conventional splitters, the quasi-optical propagation behavior of electromagnetic waves within a dielectric is used to achieve a wavelength-independent and space-efficient power splitting mechanism through refraction and total reflection. The presented splitter concepts allow an efficient sub-THz power division at 0.5 dB symmetry at only 0.8 dB additional splitting loss. Furthermore, asymmetrical power splitting becomes possible via variation of splitting angles, leading to a widely adjustable splitting ratio. The additively manufactured splitters exhibit an excellent return loss of more than 20 dB over the entire bandwidth of 80 GHz. Due to the achieved compactness and low complexity, the splitters represent core components for future dielectric sub-THz signal distribution networks.

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How to cite

APA:

Hahn, L., Gloßner, M., Bürk, L., Carlowitz, C., Gold, G., & Vossiek, M. (2025). 3D-Printed Broadband Dielectric Image Line Splitters for sub-THz Applications. In 2025 IEEE Radio and Wireless Symposium (RWS) (pp. 67-70). San Juan, PR, US: IEEE Computer Society.

MLA:

Hahn, Leonhard, et al. "3D-Printed Broadband Dielectric Image Line Splitters for sub-THz Applications." Proceedings of the 2025 IEEE Radio and Wireless Symposium, RWS 2025, San Juan, PR IEEE Computer Society, 2025. 67-70.

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