Telemetric position sensing using resonant frequency parameterization of a millimeter-wave metamaterial

M. Töfferl; A. Schossmann; C. Schmidt; P. Banzer; A. Bergmann

doi:10.1117/12.3031513

15 November 2024 Telemetric position sensing using resonant frequency parameterization of a millimeter-wave metamaterial

M. Töfferl, A. Schossmann, C. Schmidt, P. Banzer, A. Bergmann

Author Affiliations +

Proceedings Volume 13203, Sensors and Communication Technologies in the 1 GHz to 10 THz Band; 132030E (2024) https://doi.org/10.1117/12.3031513
Event: Security + Defence, 2024, Edinburgh, United Kingdom

Abstract

Due to its ability to meet requirements such as e.g. telemetry, millimeter-wave transceiver technology has gained research interest for various sensor applications, including the automotive and consumer sector. This work presents a resonant metamaterial for millimeter-waves that enables telemetric position sensing. The concept is based on a resonant unit cell that can be tuned to enable position encoding. A 2D metamaterial design was developed to parametrize the resonance frequency via a geometric parameter of the structure. The tuneable range of the metamaterial was estimated using a finite element method (FEM) simulation. This allowed for a bijective mapping of resonance frequency and the geometric parameter, where a linear range for the sensor effect was selected. The resonance frequency shift encodes the absolute position via the geometry parameter of the metamaterial. A linear position encoded bar was fabricated using well-known PCB manufacturing techniques for position determination. The position encoded metamaterial was successfully tested with a vector network analyser under lab conditions. This telemetric position sensor concept offers a compact and contactless readout without mechanical interference with the moving object. The metamaterial is completely passive, resulting in low maintenance and failure issues. The overall sensor concept includes a state-of-the-art radar chip as millimeter-wave transceiver which is currently under development.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

M. Töfferl, A. Schossmann, C. Schmidt, P. Banzer, and A. Bergmann "Telemetric position sensing using resonant frequency parameterization of a millimeter-wave metamaterial", Proc. SPIE 13203, Sensors and Communication Technologies in the 1 GHz to 10 THz Band, 132030E (15 November 2024); https://doi.org/10.1117/12.3031513

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