Title :
Analysis of Antenna Around NURBS Surface With Hybrid MoM-PO Technique
Author :
Chen, Ming ; Zhang, Yu ; Zhao, Xun-Wang ; Liang, Chang-Hong
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´´an
Abstract :
The hybrid method of moments and physical-optics (MoM-PO) approach is used to calculate the radiation pattern of antenna around arbitrarily shaped structure. The structure is modeled with Non-uniform rational B-spline (NURBS) surfaces. The hybrid MoM-PO approach is implemented by modifying the impedance matrix of the MoM region with PO. Formula for the scattered PO field is deduced for cases of antenna located around NURBS surface. The stationary phase method (SPM) is applied for the integral of the induced current in the PO region. Results obtained from this method and from MoM-PO approach based on triangle facet model agree well while the former is more efficient in execution time
Keywords :
antenna radiation patterns; electromagnetic wave scattering; impedance matrix; method of moments; physical optics; splines (mathematics); NURBS surface analysis; SPM; antenna around arbitrarily shaped structure; field scattering; hybrid MoM-PO technique; impedance matrix; method-of-moments; nonuniform rational B-spline; physical-optics; radiation pattern; stationary phase method; Electromagnetic analysis; Electromagnetic scattering; Moment methods; Optical scattering; Optical surface waves; Solid modeling; Spline; Surface impedance; Surface reconstruction; Surface topography; Method of moments (MoM); non-uniform rational B-spline (NURBS); physical optics (PO); stationary phase method (SPM);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.889814
