Celep, M; Shin, S; Stanley, M; Breakenridge, E; Singh, S; Ridler, N M (2024) SI Traceable RF and Microwave Power Measurements at Cryogenic Temperatures. In: 2024 Conference on Precision Electromagnetic Measurement (CPEM), 08-12 July 2024, Denver, CO, USA.

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Abstract

This work demonstrates SI traceable RF and microwave power measurements at cryogenic temperatures down to 3 K using a commercial balance thermoelectric type power sensor. This is the first time, to the best of our knowledge, a commercial RF power sensor has been tested at such cryogenic temperatures. To obtain SI traceability, a power sensor’s thermopile response was characterized over RF power levels from -35 dBm to 0 dBm in a frequency range from 100 kHz to 10 GHz using known DC power. The thermopile response was then utilized to calculate absolute RF power around 3 K. The results demonstrated suitability of the power sensor to operate at temperatures down to 3 K and RF and microwave power levels down to -35 dBm.

Item Type:	Conference or Workshop Item (Paper)
Keywords:	Cryogenic temperature DC substitution quantum RF power traceability
Subjects:	Electromagnetics > RF and Microwave
Divisions:	Electromagnetic & Electrochemical Technologies
Identification number/DOI:	10.1109/CPEM61406.2024.10646150
Last Modified:	18 Oct 2024 14:38
URI:	https://eprintspublications.npl.co.uk/id/eprint/10077