期刊
IEEE JOURNAL OF MICROWAVES
卷 1, 期 2, 页码 610-624出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JMW.2021.3063247
关键词
Cavity resonators; microwave metrology; microwave resonance; microwave sensors; whispering gallery resonators
资金
- EURAMET
- European Union
This paper highlights the significance of microwave resonators in metrology applications, emphasizing that using high-quality-factor resonators can achieve high sensitivity, leading to improved measurement precision and accuracy. To accurately measure the resonance frequency of high-Q resonators and obtain low measurement uncertainty, the entire measurement set-up must be carefully designed.
Microwave resonators are widely adopted as high sensitivity sensors in both applied and fundamental metrology, to measure a number of different physical quantities, such as temperature, humidity, pressure, length and material properties. High sensitivity, and thus potential high measurement precision and accuracy, can be achieved by resorting to high-quality-factor (Q) resonators. Nonetheless, in order to accurately measure a high-Q resonance and obtain low measurement uncertainty, as required by metrology applications, the entire measurement set-up must be carefully designed. This papers presents an overview of resonance frequency measurements for metrology applications, illustrating the various aspects and issues to be dealt with when pursuing highly accurate measurements, as well as of the most relevant achievements in this field.
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