Calibrations of inductive voltage dividers by four-terminal-pair bridge with automated permuting capacitors

A four-terminal-pair bridge with automated permuting capacitors device (APCD) for calibrations of two-stage inductive voltage dividers (IVDs) is described. The APCD is well symmetrical, compact and fully coaxial design. By using coaxial microwave switches, the APCD can be permuted automatically with four-terminal-pair definition during calibrating of IVDs, this makes the stability can be improved.