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Variation of the Electrical Characteristics of an Inhomogeneous Microstrip Line with the Dielectric Constant of the Substrate and with the Geometrical Dimensions (Short Papers)

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4 Author(s)

Studying systematically the variations of electrical characteristics of microstrip lines with the width w of the line, the thickness h, and the dielectric constant epsilonr of the substrate, we have obtained a perfect linear variation with epsilonr. Then using a least squares method, we have been able to give an analytical expression of capacitances usable for 1 ≤ epsilonr ≤ 100 and 0.04 ≤ w/h ≤ 10. The importance of this result is that we can give impedances and phase velocities without any computation.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:23 ,  Issue: 8 )