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Re-adjustments for MOM calculations of microstrip and stripline power dissipation

Published online by Cambridge University Press:  30 July 2020

Frederick Huang Open the ORCID record for Frederick Huang [Opens in a new window]
Frederick Huang*
Affiliation:
Department of Electronic, Electrical and Systems Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
*
Author for correspondence: F. Huang, E-mail: f.huang@bham.ac.uk
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Abstract

Microstrip and stripline losses in Method of Moments (MOM) calculations have an error arising from the large current density at the strip edges, characterized by an integration limit (W/2-d) in the equation for current density in thin strips (width W), where d is a fitting parameter. It depends primarily on the width of the MOM subsection on the edge of the strip. By comparing with the integration limit (W/2-Δ) for an actual strip with finite thickness, a correction factor is estimated. The equations incorporating d are confirmed by comparing with MOM calculations of isolated stripline, uniformly spaced parallel strips, striplines and microstrips close to ground planes, and with a strip in a uniform, externally applied magnetic field. The results are also consistent with measurements with copper. This makes the accuracy of the loss estimates commensurate with the excellence of the other aspects of MOM simulations.

Keywords

Computer aided designEM field theoryMethod of Moments power loss
Type
EM Field Theory
Information
International Journal of Microwave and Wireless Technologies , Volume 13 , Issue 3 , April 2021 , pp. 255 - 265
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Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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