CALCULATION OF CAPACITANCE OF TWO SPIRAL PLATES PLACED ON PRINTED CIRCUIT BOARD USING COMSOL MULTIPHYSICS

The aim of this paper is to estimate the capacitance of spiral shaped plates placed on printed circuit board opposite to each other using finite elements method of solution. First, the capacitance of such system is determined using analytic approach. Then the capacitance is calculated using finite elements method of solution. For this purpose the soft-ware package called COMSOL Multhiphysics ? AC/DC module is used. Designed system is modeled in 2D axisymmet-ric space dimension as an electrostatic problem and results are compared with analytic solution.