U. Stumper et al., TRACING THE COMPLEX RF REFLECTION COEFFICIENT IN THE MHZ RANGE BACK TO DC RESISTANCE STANDARDS BY UTILIZING PLANAR NICR THIN-FILM RESISTORS, IEEE transactions on instrumentation and measurement, 42(2), 1993, pp. 351-355
A method to determine the three error box parameters of complex reflec
tometers is proposed where a number of planar NiCr thin-film resistors
mounted in identical coaxial connectors and traced back to dc resista
nce standards is used. First experimental results show that this metho
d seems to be applicable to frequencies up to about 500 MHz.