Two Ways of Power Substitution for calibrating Thermoelectric Sensors at RF and Microwaves |
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| Luciano Brunetti, Luca Oberto, Marco Sellone |
- Abstract:
- Thermoelectric sensors reached a dominant application in the commercial power meters at Radio Frequency (RF) and Microwaves (MW), by virtue of their superior robustness, stability and accuracy if compared with other types of power sensors. Furthermore, their performances reveal to be very useful in the realization of broadband primary power standards as a valid alternative to the resistive sensors, i.e. bolometers, in coaxial transmission line, at least. Recent technological improvements allow thermoelectric sensor calibration following two circuital schemes. In simple words, sensors have been fitted with auxiliary absorbers to which direct current (dc) reference power can be supplied as an alternative to their main RF/MW absorber. Hereby, we present a comparison in term of effective efficiency of a thermoelectric sensor that is calibrated with the calorimetric technique and by using the two possibilities of power substitution. The aim is to verify to what extent the two calibration ways can be considered equivalent.
- Keywords:
- Microwaves, power standards, power substitution, microcalorimeter, thermoelectric sensors.
- Download:
- IMEKO-TC4-2016-09.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 Symposium 2016
- Title:
21st IMEKO TC4 Symposium on Measurements of Electrical Quantities (together with 19th TC4 International Workshop on ADC and DCA Modeling and Testing, IWADC)
"Understanding the World through Electrical and Electronic Measurement"- Place:
- Budapest, HUNGARY
- Time:
- 07 September 2016 - 09 September 2016