Celep, M; Salek, M; Stokes, D; Skinner, J; Wang, Y (2022) Power Sensor Characterization From 110 to 170 GHz Using a Waveguide Calorimeter. IEEE Transactions on Instrumentation and Measurement, 71. 1002007

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Abstract

This paper proposes a new calorimetry measurement method to measure absolute microwave power obtained through DC substituted power from 110 GHz to 170 GHz (WG 29, WR 6/7 or D-band) using a custom design thin film microwave power sensor. A thermopile of a measurement system was characterized using a known DC power with the microwave sensor and the thermopile coefficient was obtained. Absolute microwave power on the microwave sensor was calculated using the thermopile coefficient and removed effect of a thermal isolation section and calorimeter unbalance effect. To transfer power traceability from the calorimeter to the microwave power measurement applications, effective efficiency of a device under test power sensor/meter combination was defined using the calorimeter’s absolute microwave power and S-parameters of the measurement system and the device under test. The effective efficiency of the device under test was obtained between 0.9386 and 0.9815 for the whole band.

Item Type:	Article
Keywords:	Calibration calorimeter effective efficiency microwave power microwave sensor
Subjects:	Electromagnetics > RF and Microwave
Divisions:	Electromagnetic & Electrochemical Technologies
Identification number/DOI:	10.1109/TIM.2022.3144209
Last Modified:	15 Feb 2023 10:53
URI:	https://eprintspublications.npl.co.uk/id/eprint/9559