Enhancing the accuracy of hybrid SBR/MoM method based on new interaction

Mei, Xiaowei; Lin, Hai

doi:10.1109/aps.2015.7305228

Cited by 1 publication

(1 citation statement)

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“…For the interaction coupled back from the BT region to the MLFMA region, the induced PO near field E PO near affecting the MLFMA region [23] can be taken into account by adding the additional exciting voltages to the voltage vector of the MLFMA. The additional exciting voltages ∆V can be calculated by the center point approximation method given as follows:…”

Section: Disturbance From the Bt Region To The Mlfma Regionmentioning

confidence: 99%

Iterative MLFMA-MADBT Technique for Analysis of Antenna Mounted on Large Platforms

2020

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A hybrid technique combining the multi-level fast multipole algorithm (MLFMA) and the modified adaptive division beam tracing (MADBT) is presented to analyze the radiation patterns of the antennas mounted on large-scale complex platforms. In this technique, the MLFMA is used to characterize the antenna and the transition region that cannot be analyzed accurately by high-frequency asymptotic methods. The MADBT method is used to analyze the contribution of the platforms to the entire radiation pattern by tracing all beams effectively. By applying the beam-based MADBT method instead of the conventional current-based physical optics (PO) method to the platforms, the multi-bounce effects inside the platforms are considered, which enhances the accuracy of the radiation patterns, especially for the complex platforms with corner reflector. An iteration method is proposed to model the interaction between the antennas and the platforms strictly. The proposed iterative MLFMA-MADBT method is mesh-independent and can avoid the matrix-vector production (MVP) of the iterative MLFMA-PO method in each iteration. These characters significantly reduce the memory and time consumption in computation while keeping high accuracy. Numerical results are presented to demonstrate the accuracy and efficiency of the proposed hybrid technique.

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Section: Disturbance From the Bt Region To The Mlfma Regionmentioning

confidence: 99%