A new SOLT calibration method for leaky on-wafer measurements using a 10-term error model

Li, C. , Liu, C., Wu, A. and Ridler, N. (2018) A new SOLT calibration method for leaky on-wafer measurements using a 10-term error model. IEEE Transactions on Microwave Theory and Techniques, 66(8), pp. 3894-3900. (doi: 10.1109/TMTT.2018.2832052)

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Abstract

We present a new Short-Open-Load-Thru (SOLT) calibration method for on-wafer S-parameter measurements. The new calibration method is based on a 10-term error model which is a simplified version of the 16-term error model. Compared with the latter, the former ignores all signal leakages except the ones between the probes. Experimental results show that this is valid for modern vector network analyzers (VNA). The advantage of using this 10-term error model is that the exact values of all error terms can be obtained by using the same calibration standards as the conventional SOLT method. This avoids not only the singularity problem with approximate methods, such as least squares, but also the usage of additional calibration standards. In this paper, we first demonstrate how the 10-term error model is developed and then the experimental verification of the theory is given. Finally, a practical application of the error model using a 10 dB attenuator from 140 GHz to 220 GHz is presented. Compared with the conventional SOLT calibration method without crosstalk corrections, the new method shows approximately 1 dB improvement in the transmission coefficients of the attenuator at 220 GHz.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Li, Professor Chong
Authors: Li, C., Liu, C., Wu, A., and Ridler, N.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Research Group:MaTE
Journal Name:IEEE Transactions on Microwave Theory and Techniques
Publisher:IEEE
ISSN:0018-9480
ISSN (Online):1557-9670
Published Online:14 June 2018
Copyright Holders:Copyright © 2018 EU
First Published:First published in IEEE Transactions on Microwave Theory and Techniques 66(8): 3894-3900
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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