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Open AccessArticle

An Adiabatic Coaxial Line for Microcalorimeter Power Measurements in Wireless Communication for Smart Grid

1
Valine Consulting, Zagreb 10000, Croatia
2
Department of Electrical Engineering and Fundamentals, Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb 10000, Croatia
3
Radio Development Unit, Research and Development Centre, Ericsson Nikola Tesla, Zagreb 10000, Croatia
*
Author to whom correspondence should be addressed.
This paper is an extended version of our paper published in 2019, 2nd International Colloquium on Smart Grid Metrology (SMAGRIMET), Split, 9–12 April 2019, pp. 131–134.
Energies 2019, 12(21), 4194; https://doi.org/10.3390/en12214194
Received: 16 September 2019 / Revised: 24 October 2019 / Accepted: 1 November 2019 / Published: 3 November 2019
(This article belongs to the Special Issue 2nd International Colloquium on Smart Grid Metrology (SmaGriMet 2019))
This paper presents the extended results and prototype of the adiabatic copper conductor constructed with two interruption points in the external conductor layer, for use as a microcalorimeter power standard in wireless communication for a smart grid frequency range. Gaps are intended to drive down the thermal transfer from the outer environment into microcalorimeter and to reduce measurement inaccuracies in the microcalorimeter. The proposed design method is based on the combination of thermal and electromagnetic finite-element method simulations by which the desired line performance has been tailored. A prototype of the proposed adiabatic line has been manufactured and measurements on the prototype are presented along with the design procedure. Measured results are in line with the ones predicted by numerical calculations. View Full-Text
Keywords: microcalorimeter; adiabatic coaxial line; flange-type gap; thermal flow calculations microcalorimeter; adiabatic coaxial line; flange-type gap; thermal flow calculations
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MDPI and ACS Style

Martinovic, Z.; Dadic, M.; Ivsic, B.; Malaric, R. An Adiabatic Coaxial Line for Microcalorimeter Power Measurements in Wireless Communication for Smart Grid. Energies 2019, 12, 4194.

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