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The corrected induced surface current for arbitrary conducting objects at resonance frequencies

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3 Author(s)
A. A. Mohsen ; Dept. of Eng. Math. & Phys., Cairo Univ., Giza, Egypt ; A. -R. A. Helaly ; H. M. Fahmy

It is well known that using the method of moments in conjunction with either the electric or magnetic field surface integral equations (EFIE or MFIE) produces inaccurate surface currents on conducting bodies at resonance frequencies. A new technique (based on singular value decomposition) is developed to correct the computed current by adding a correction factor term. This term is seen to be the resonant mode current, obtained by employing the power method in the moment method matrix, multiplied by an unknown complex factor. Applying the condition of vanishing field inside the conducting object results in obtaining the unknown complex factor. Therefore, this technique is hereafter referred to as correction factor technique (CFT). When the computed surface current on a conducting sphere, proposed technique, is compared with the exact one, the numerical results show excellent agreement

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:43 ,  Issue: 5 )