IEEE Antennas and Propagation Society International Symposium, Boston, MA, July 8-13, 2001

Complementary Operators and Associated Issues of Instability

Omar Ramahi
University of Maryland
College Park, MD 20742


The past several years witnessed the development of the complementary operators method (COM) as a highly-accurate mesh-truncation technique for the solution of open-region radiation problems [1]. The COM is based on the application of two independent operators that combine to annihilate the first-order reflections that arise from the outer boundaries of the FDTD computational domain. Since the construction of the complementary operators depends on classical absorbing boundary conditions (ABCs) such as Higdon or Bayliss-Turkel, any instability potential of these operators directly impact the performance of the COM operators. This work gives a summary of present efforts to improve the stability potential of ABCs

Complete article is available to CALCE Consortium Members


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