What is BS EN IEC 61788-7 about?
BS EN IEC 61788-7 is the seventh part of the multi-series of international standard that describes the measurement of the surface resistance (Rs) of superconductors at microwave frequencies by the standard two-resonator method.
In BS EN IEC 61788-7, the object of measurement is the temperature dependence of surface resistance at the resonant frequency.
The applicable measurement range of Rs for this method is as follows:
- Frequency: 8 GHz < f < 30 GHz
- Measurement resolution: 0,01 mΩ at 10 GHz
Who is BS EN IEC 61788-7 for?
BS EN IEC 61788-7 on superconductivity is relevant to:
- Electronics industry
- Telecommunications industry
- Electrical engineers
- Manufacturers of electronic equipment and components
Why should you use BS EN IEC 61788-7?
Superconductivity is the ability of certain materials to conduct electric current with practically zero resistance. In this regard, BS EN IEC 61788-7 is intended to provide an appropriate and agreeable technical base to engineers working in the fields of electronics and superconductivity technology.
The dielectric resonator method is selected among several methods to determine the surface resistance at microwave frequencies because it is considered to be the most popular and practical at present.
The parameters of superconductor materials needed for the design of microwave low loss components are the surface resistance, (Rs) and the temperature dependence of the Rs.
Knowledge of this parameter through BS EN IEC 61788-7 is of primary importance for the development of new materials on the supplier side and for the design of superconductor microwave components on the customer side.
What’s changed since the last update?
BS EN IEC 61788-7:2020 supersedes BS EN 61788‑7:2006, which is withdrawn and includes the following technical changes:
- Informative Annex B, relative combined standard uncertainty for surface resistance measurement has been added
- Precision and accuracy statements have been converted to uncertainty
- Reproducibility in surface resistant measurement has been added
