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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2016-10-19
Numerical Constructions of Testing Functions for Improving the Accuracy of MFIE and CFIE in Multi-Frequency Applications
By
Bariscan Karaosmanoglu,

    Dr. Bariscan Karaosmanoglu

    Department of Electrical and Electronics Engineering

    Middle East Technical University

    Turkey

    Homepage

Aşkın Altınoklu,

    Dr. Aşkın Altınoklu

    Department of Electrical and Electronics Engineering

    Middle East Technical University

    Turkey

    Homepage

Ozgur Ergul

    Dr. Ozgur Ergul

    Department of Electrical and Electronics Engineering

    Middle East Technical University

    Turkey

    Homepage

Progress In Electromagnetics Research M, Vol. 51, 63-70, 2016
doi:10.2528/PIERM16053107 | Google Scholar

Abstract
We present a new approach based on numerical constructions of testing functions for improving the accuracy of the magnetic-field integral equation (MFIE) and the combined-field integral equation (CFIE) with low-order discretizations. Considering numerical solutions, testing functions are designed by enforcing the compatibility of the MFIE systems with the accurate coefficients obtained by solving the electric-field integral equation (EFIE). We demonstrate the accuracy improvements on scattering problems, where the testing functions are designed at a single frequency and used in frequency ranges to benefit from the design procedure. The proposed approach is easy to implement by using existing codes, while it improves the accuracy of MFIE and CFIE without deteriorating the efficiency of iterative solutions.
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Citation
Bariscan Karaosmanoglu, Aşkın Altınoklu, and Ozgur Ergul, "Numerical Constructions of Testing Functions for Improving the Accuracy of MFIE and CFIE in Multi-Frequency Applications," Progress In Electromagnetics Research M, Vol. 51, 63-70, 2016.
doi:10.2528/PIERM16053107
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