Measuring Impedances of DC-biased Inductors by Using Vector Network Analyzers

Abstract

This paper is devoted to a detailed experimentally based analysis of applicability of vector network analyzers for measuring impedance of surface mount inductors with and without DC bias. The measurements are made using custommade bias tees and a test fixture with an ordinary vector network analyzer. The main attention in the analysis is focused on measurement accuracy of an impedance of surface mount inductors. Measurement results obtained with a vector network analyzer will also be compared to those obtained by using an impedance analyzer based on auto-balancing bridge method.

Keywords

• vector network analyzer
• impedance
• inductor
• measurements
• accuracy
• bias tee