Kamble, H; Salek, M; Wang, X; Celep, M; Stokes, D; Skinner, J; Wang, Y (2023) D-band Thin-Film/Resistive Line Bolometer as Transfer Standard. IEEE Transactions on Microwave Theory and Techniques, 71 (11). pp. 4882-4892.

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Abstract

The bolometric thin-film based transfer standard with unique structure adopted from barretter mount for the absolute power detection in D-band (110 - 170 GHz) is reported. It uses a resonance-type matching technique with thin-film resistive lines. The same line functions as the sensing element. The change in the resistivity of the line under incident wave is calibrated to measure the absolute RF power in the D-band. This paper focuses on the analysis using equivalent circuit models and the full-wave electromagnetic design optimization, fabrication and characterization. The comparison between a single and a folded-line structure is performed, showing the wideband capability of the later. The device consists of two sensors for RF power measurement itself and ambient temperature variations measurement. It has shown very good short-term time response with only ~0.19 % deviation in given time interval which is almost close to commercial PM5 sensor with ~0.27 % deviation. The long-term time response is also impressive with deviation less than 0.6 % which is similar to commercial PM5 sensor. The fast response time, better thermal isolation and ambient compensation sensor makes it suitable for transfer/working standard which can be used in ambient temperature environment.

Item Type:	Article
Keywords:	Barretter mount Bolometer metrology millimeter wave power sensor thin film transfer standard
Subjects:	Electromagnetics > RF and Microwave
Divisions:	Electromagnetic & Electrochemical Technologies
Identification number/DOI:	10.1109/TMTT.2023.3269535
Last Modified:	19 Feb 2024 13:39
URI:	https://eprintspublications.npl.co.uk/id/eprint/9934