Model Parameter Estimation of Passive Components at Millikelvin Temperatures for Cryogenic Microwave Circuit Design

Zocher N, Vossiek M, Carlowitz C (2025)

Publication Type: Conference contribution

Publication year: 2025

Publisher: IEEE

Pages Range: 1-4

Conference Proceedings Title: 2025 55th European Microwave Conference (EuMC)

Event location: Utrecht NL

DOI: 10.23919/EuMC65286.2025.11235164

Abstract

Cryogenic microwave circuit design is required for the development of future quantum systems. Discrete components can be used to design compact attenuators, matching networks or filters to verify circuit designs for later integration. However, precise passive component characterization is necessary for microwave circuit design, but has not yet been performed in the millikelvin (mK) range. This work presents for the first time a cryogenic model parameter estimation of passive surface-mounted device (SMD) components for microwave circuit design down to 50 mK and up to 8 GHz. The model parameters of an inductor, a capacitor and two resistors have been derived down to 50 mK. Measurement data were de-embedded using coplanar waveguide (CPWG) TRL calibration standards. It is shown that at 50 mK, the characteristic capacitance and inductance of the investigated components change by only 6 % respectively 2.5 % and that the inductor resistance at 50 mK is reduced by 80 % compared to room temperature, proving its suitability for microwave circuit design at mK temperatures. In contrast, the resistance value of the investigated thick film resistors increases by 20 %.

Authors with CRIS profile

Nicole Zocher Lehrstuhl für Hochfrequenztechnik (LHFT) Martin Vossiek Lehrstuhl für Hochfrequenztechnik (LHFT) Christian Carlowitz Lehrstuhl für Hochfrequenztechnik (LHFT)

How to cite

APA:

Zocher, N., Vossiek, M., & Carlowitz, C. (2025). Model Parameter Estimation of Passive Components at Millikelvin Temperatures for Cryogenic Microwave Circuit Design. In IEEE (Eds.), 2025 55th European Microwave Conference (EuMC) (pp. 1-4). Utrecht, NL: IEEE.

MLA:

Zocher, Nicole, Martin Vossiek, and Christian Carlowitz. "Model Parameter Estimation of Passive Components at Millikelvin Temperatures for Cryogenic Microwave Circuit Design." Proceedings of the 2025 55th European Microwave Conference (EuMC), Utrecht Ed. IEEE, IEEE, 2025. 1-4.

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