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Progress In Electromagnetics Research
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APPLICATION OF THE IMPROVED MATRIX TYPE FDTD METHOD FOR ACTIVE ANTENNA ANALYSIS

By S.-Q. Xiao, Z. Shao, and B.-Z. Wang

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Abstract:
An improved finite-difference time-domain (FDTD) method has been extended to analyze the antennas with complicated lumped/active networks in this paper. The improved FDTD method is based on a novel integral transform and the matrix theory. Combing the novel integral transform with Kirchhoff's circuit laws, the hybrid networks comprised of high order linear and nonlinear elements with arbitrary connection can be modeled by a stable matrix equation. An effective model is built for the linear lumped networks including the internal independent sources. A wire antenna loaded with wideband match network and a two-element active patch antenna loaded with Gunn diodes are analyzed by the developed techniques. The analysis results indicate that the improved matrix-type FDTD method is not only stable and accurate, but also time-saving in simulating the complicated hybrid networks.

Citation:
S.-Q. Xiao, Z. Shao, and B.-Z. Wang, "Application of the Improved Matrix Type FDTD Method for Active Antenna Analysis," Progress In Electromagnetics Research, Vol. 100, 245-263, 2010.
doi:10.2528/PIER09112204
http://www.jpier.org/PIER/pier.php?paper=09112204

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