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Internal Resistance of Voltage Source Using the FDTD Technique



Ae-kyoung Lee


The introduction of the internal resistance of a voltage source is a very effective method for analyzing the electromagnetic characteristics of antennas and microstrip devices using the FDTD technique. However, some trial and error could be accompanied for a proper resistance values to obtain a stable result. This letter proposes the method to reflect a proper internal resistance of source voltage in an FDTD code. The key of this method is to choose a resistance value so that the voltage drop due to an internal resistance is less than the amplitude of a voltage source. The reductions of total computation time steps are shown for various antenna types.
IEEE Microwave and Wireless Components Letters


Source resistance, FDTD technique, voltage drop, reduction of time steps


Lee, A. (2009), Internal Resistance of Voltage Source Using the FDTD Technique, IEEE Microwave and Wireless Components Letters, [online], (Accessed May 28, 2024)


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Created November 2, 2009, Updated February 19, 2017