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Modified two fields problem approach in simulation of microstripe PIC elements

Kula S.

Poznan University of Technology Academic Journals. Electrical Engineering

2013

No. 76

189--195

In this paper Modified Two Fields Problem Approach is presented. This method is based on FIT (Finite Integration Technique), on replacement of 3D (three-dimensional) analysis with 2D analysis and on empirical formulas. The starting point to create this method was desire to reduce order models, to decrease computation time and needed computation power. The proposed method is a hybrid method, which essential element is to use new, empirical formulas of p.u.l. (per unit length) capacitance. The method is applied to compute p.u.l. R (resistance), L (inductance), C (capacitance), G (conductance) and propagation quantities like effective dielectric permittivity ɛeff, attenuation α , characteristic impedance Zo of passive IC (integrated circuits) elements working at high frequency. Usefulness and effectiveness of the method was verified through results comparison with commercial software and with 3D FIT method. Comparison was made on example of Microstripe PIC (Photonic Integrated Circuit) structure.