| Issue |
EPJ Web Conf.
Volume 323, 2025
22nd International Metrology Congress (CIM2025)
|
|
|---|---|---|
| Article Number | 12005 | |
| Number of page(s) | 6 | |
| Section | Electromagnetism | |
| DOI | https://doi.org/10.1051/epjconf/202532312005 | |
| Published online | 07 April 2025 | |
https://doi.org/10.1051/epjconf/202532312005
New Structure for High-Sensitivity Coaxial Thermal Power Sensor in the Frequency Range from DC–50 GHz
Laboratoire National de Métrologie et d’Essais, 29 avenue Roger Hennequin, 78197 Trappes, France
* Corresponding author: doudou.ba@lne.fr
Published online: 7 April 2025
This paper presents the design and development of a new thermal microwave power sensor for a frequency range spanning from DC to 50 GHz. The purpose of this new design is to propose a high-sensitivity thermoelectric power sensor suitable for microcalorimeter application that is a primary method of microwave power calibration. The core structure of the power sensor comprises a Grounded Coplanar Waveguide (GCPW) transmission line, two load resistors, a thermopile, and output pads for DC measurements. The optimized power sensor demonstrates promising simulation performance, with a return loss better than 20 dB across the frequency range and an efficiency exceeding 80%. At 50 GHz, the sensitivity of the power sensor reaches well over 0.240 mV/mW.
© The Authors, published by EDP Sciences, 2025
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