## Abstract A hybrid FEM/MoM method and a finite‐difference–time‐domain (FDTD) simulator have been employed for the modeling of irregular slot radiators in slotted waveguide antennas. Two typical examples of irregular slots are examined, namely, the T‐shaped slot radiator in a bifurcated waveguide
Analysis of waveguide slot antennas using MLFMA
✍ Scribed by Xu Liu; Changhong Liang; Xunwang Zhao
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 229 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
Slotted waveguide array is analyzed using the multilevel fast multipole algorithm (MLFMA) combined with the near‐field preconditioner applied to the metallic surfaces of the waveguide structure. The approach differs from existing methods that utilize asymptotic method, method of moments (MoM) with the magnetic field integral equation (MFIE), or hybrid methods of MoM and boundary element method (BEM). Since no ideal assumptions are made, the analysis and computation are considered to be theoretically and numerically rigorous. In addition, the low complexity of the MLFMA is especially favorable for fast calculation of the large‐scale waveguide arrays. The experimental results validate the algorithm. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 65–68, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23015
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