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Capacitance of transmission line of parallel cylinders in the presence of dielectric coating

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3 Author(s)
Das, B.N. ; Dept. of Electron. & Electr. Commun. Eng., Inst. of Technol., Kharagpur, India ; Chakrabarty, S.B. ; Rao, K.S.R.

The paper presents a method for the evaluation of variation of capacitance of a dielectric coated two-wire line of parallel cylinders, each of unit radius with a change in thickness of the dielectric along the radial direction. A conformal transformation is used to transform the conductor and dielectric boundaries to appropriate contours extending over a fixed region along the imaginary axis in the transformed plane. Approximating the continuous curve obtained through transformation of dielectric boundaries by a very large number of discrete steps, the expression for the capacitance is derived in the form of a definite integral. Numerical data on capacitance as a function of width of the dielectric in the absence and presence of a conducting ground plane are presented

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:37 ,  Issue: 1 )