F. Purroy et L. Pradell, New theoretical analysis of the LRRM calibration technique for vector network analyzers, IEEE INSTR, 50(5), 2001, pp. 1307-1314
Citations number
14
Categorie Soggetti
Instrumentation & Measurement
Journal title
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
In this paper, a new theoretical analysis of the four-standards line-reflec
t-reflect-match (LRRM) vector network-analyzer (VNA) calibration technique
is presented. As a result, it is shown that the reference-impedance (to whi
ch the LRRM calibration is referred) cannot generally be defined whenever n
onideal standards are used. Based on this consideration, a new algorithm to
determine the on-wafer match standard is proposed that improves the LRRM c
alibration accuracy. Experimental verification of the new theory and algori
thm using on-wafer calibrations up to 40 GHz is given.