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Faculty Sponsor

Abdullah Eroglu

Sponsor Department/Program

Electrical and Computer Engineering

Student Department/Program



Finite Difference Time Domain Simulations (FDTD) is one of the most effective computational methods for solving electromagnetic problems. It applies the method of finite difference for solving differential equations to Maxwell’s equations. It divides space of application into small fractions which are designated as cells. Then, Maxwell equations are applied at each point in time for each cell. This application enables one to simulate electromagnetic waves propagating in a numerical space. In this work, the finite difference time domain method is applied to develop planar devices for transmission lines. One of the common examples of these planar microstrip devices is directional couplers. The FDTD is developed and applied to design one-line and two-line conventional directional couplers. The results are then compared with Method of Moments (MoM)-based commercial electromagnetic simulators. It is shown that there is close agreement between the results of the proposed method and MoM based commercial software Sonnet. The method such as the one proposed in this paper can be used design any planar devices with accuracy.



Finite Difference Time Domain Simulation of Transmission Lines

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