Effect of substrate thickness and metallization thickness on dispersion characteristics of CPW |
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| Authors: | A. K. Rastogi N. J. McEwan I. U. Khairuddin A. Z. Jakal |
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| Affiliation: | (1) Tele-communication Research Group Department of Electronic and Electrical Engineering, University of Bradford, BD7 IDP, West Yorkshire, UK |
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| Abstract: | Approximate conformal mapping techniques have been used for analysing the effect of finite substrate thickness on coplanar wave guide (CPW). Calculations for impedance and effective dielectric constant are presented for CPW's with finite substrate thicknesses. Analytical formulation are presented for calculations. Network analytical methods of electromagnetic fields are employed to evaluate the effect of thick metal coating on CPW. Dispersion characteristics of CPW have been plotted for various metallization thicknesses. Effect of thick metal coating on guide wavelength is also plotted. Increase in metallization thickness of CPW causes an increase in wavelength. Due to this fact characteristic impedance and effective dielectric constant decreases. |
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