Measuring impedances of DC-biased inductors by using vector network analyzers

Deniss Stepins, G. Asmanis, A. Asmanis, L. Ribickis


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 custom-made 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. 


Full Text:



Testing Chokes and Transformers with High-Current DC Bias. on_Inductance_Measurements

K. Okada and T. Sekino. Impedance Measurement Handbook. Agilent Technologies, 2006.

Ultra Low Impedance Measurements Using 2-Port Measurements. Agilent Application Note, 2004.

R. Dosoudil, „Determination of permeability from impedance measurement using vector network analyzer,” Journal of electrical engineering, vol. 63, No.7, pp. 97-101, Oct. 2012.

William B. Kuhn, Adam P. Boutz, "Measuring and reporting high quality factors of inductors using vector network analyzers," IEEE Transactions on Microwave Theory and Techniques, vol.58, No.4, pp. 1046-1055, Apr. 2010.

D. Stepins, G. Asmanis, A. Asmanis, “Measuring Capacitor Parameters Using Vector Network Analyzers,” Electronics, vol.18, no.1, pp.29-38, June 2014.

C.J. Žlebic, D.R. Kljajic, N.V. Blaž, L.D. Živanov, A.B. Menicanin, and M.S. Damnjanovic, “Influence of DC Bias on the Electrical Characteristics of SMD Inductors,” IEEE Transactions on Magnetics, vol.51, no.1, pp. 1-4, Jan. 2015.

Keysight Technologies E4990A Impedance Analyzer datasheet.

Keysight 16047E Test Fixture Operation and Service Manual.

De-embedding and Embedding S-Parameter Networks Using a Vector Network Analyzer. Agilent application note 1364-1.

Vector Network Analyzer Family ZVR datasheet. Rohde and Schwarz.


  • There are currently no refbacks.

International Journal of Electronics and Telecommunications
is a periodical of Electronics and Telecommunications Committee
of Polish Academy of Sciences

eISSN: 2300-1933