Analytical analysis of a rectangular shielded multilayer coupled coplanar waveguide
Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, Shanghai Shi, ChinaMicrowave and Optical Technology Letters (Impact Factor: 0.57). 06/2004; 41(5):392 - 395. DOI: 10.1002/mop.20149
The closed-form expressions for calculating the quasi-static parameters of a rectangular shielded multilayer coupled coplanar waveguide (RSMCCPW) are presented. Expressions of the odd- and even-mode characteristic impedances, which can provide accurate and fast calculations, are derived by using conformal-mapping techniques. The numerical results are obtained and compared with those available in the literature for similar unshielded structures. Good agreement between the results is observed. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 41: 392–395, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20149
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ABSTRACT: A new approach, the multipole theory(MT) method, is presented for computation of the characteristics impedance of the rectangular shielded planar striplines. The rectangular structure is transformed as the cylindrical structure by conformal mapping, the inhomogeneous field domain is treated as a combination of several simple homogeneous regions, and the solution of the boundary-value problem is represented by the generalized MT formula. Representative computational examples, including asymmetric TEM cell, rectangular shielded single microstrip line and coupled microstrip line on multilayered substrates, are given to validate the theory, and to demonstrate the accuracy and flexibility of the MT method.