KS C IEC 61338-1-4-2018 波导型介质谐振器第1-4部分:一般信息和试验条件毫米波频率下介质谐振器材料复相对介电常数的测量方法
Waveguide type dielectric resonators ─ Part 1-4: General information and test conditions ─ Measurement method of complex relative permittivity for dielectric resonator materials at millimetre-wave fre