Article

# Analytical analysis of a rectangular shielded multilayer coupled coplanar waveguide

Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, P.R. China

Microwave and Optical Technology Letters (Impact Factor: 0.59). 06/2004; 41(5):392 - 395. DOI: 10.1002/mop.20149 - Citations (6)
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**ABSTRACT:**A good estimate of the coupling effect between parallel coplanar waveguide (CPW) lines is important, especially for monolithic microwave integrated circuit (MMIC) applications where unnecessary crosstalk between conductors could be a serious problem. This paper shows how these coupling parameters may be analytically obtained in the presence of the back-face metallization. Closed-form formulas are developed for evaluating the quasi-TEM characteristic parameters based upon the conformal-mapping method (CMM). Very good agreement is observed between the values produced by these formulas and by a spectral-domain method (SDM)IEEE Transactions on Microwave Theory and Techniques 08/1997; · 2.23 Impact Factor - [Show abstract] [Hide abstract]

**ABSTRACT:**Conformal mapping (CM) and partial capacitance techniques are used for analytical evaluation of charge/current and electric- and magnetic-field distributions in a multilayered substrate coplanar waveguide (CPW) in the quasi-TEM approximation. The results, compared with finite-element method simulations, show that the magnetic wall assumed at the dielectric-dielectric interfaces in CM is a good approximation for many practical cases. The method is applied to a CPW with a thin ferroelectric film used in tunable microwave devicesIEEE Transactions on Microwave Theory and Techniques 09/1999; · 2.23 Impact Factor - [Show abstract] [Hide abstract]

**ABSTRACT:**Fast and accurate analytic formulas for calculating the quasistatic transverse electromagnetic (TEM) parameters of a general broadside-coupled coplanar waveguide (GBSC CPW) are presented. Simplicity, high speed of computation, and accuracy suggest the use of these formulas for (M)MIC CAD (monolithic) microwave integrated circuit computer-aided design programs. Numerical calculations are presented to investigate various electrical properties of the structure. An asymmetrical BSC CPW and the single CPW resulting from connecting the two coupled strips of the GBSC CPW at the input and the output ports are analyzed. Criteria are obtained to ensure the coplanar behavior of the structureIEEE Transactions on Microwave Theory and Techniques 06/1989; MTT-37(5):843 - 850. · 2.23 Impact Factor

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