BS EN 61788-15:2011

This standard BS EN 61788-15:2011 Superconductivity is classified in these ICS categories:

• 29.050 Superconductivity and conducting materials
• 17.220.20 Measurement of electrical and magnetic quantities

This part of IEC 61788 describes measurements of the intrinsic surface impedance (Z_S) of HTS films at microwave frequencies by a modified two-resonance mode dielectric resonatormethod [13, 14]². The object of measurement is to obtain the temperature dependence of the intrinsic Z_S at the resonant frequenc y f₀.

The frequency and thickness range and the measurement resolution for the intrinsic Z_S of HTS films are as follows:

• f requency: up to 40 GHz;

• f ilm thickness: greater than 50 nm ;

• m easurement resolution: 0 ,01 mΩ at 10 GHz.

The intrinsic Z_S data at the measured frequency, and that scaled to 10 GHz, assuming the f² rule for the intrinsic surface resistance R_S (f < 40 GHz) and the f rule for the intrinsic surface reactance X_S for comparison, shall be reported.