Application of Ludwig integral combining with SPM in NURBS MOM-PO method for analyzing antenna around electrically large platform

Author

Ren, Zhi-Peng ; Su, Tao ; Luo, Liang-Ping ; Huang, Kai

Author_Institution

Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´´an, China

Volume

2

fYear

2010

fDate

17-20 Sept. 2010

Firstpage

1

Lastpage

4

Abstract

The hybrid method of moments and physical-optics (MOM-PO) based on Non-uniform rational B-spline (NURBS) modeling represented a suitable approach because it´s higher in efficiency and more accurate modeling than Triangle MOM-PO method. However, the reason of the invalidation in existing NURBS MOM-PO method is analyzed in detail in this paper. Ludwig integral combining with SPM (stationary phase method) is utilized to calculate the integral of induced currents for overcoming the invalidation. Thus both the efficiency and validity are ensured. Numerical results demonstrate that accurate results can be achieved in electrically large EM radiation problems by using the present method.

Keywords

antennas; method of moments; physical optics; splines (mathematics); EM radiation problem; Ludwig integral; antenna; hybrid method of moments; nonuniform rational B-spline modeling; physical-optics; stationary phase method; Ludwig integral combining with SPM; MOM-PO; NURBS; electrically large;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals Systems and Electronics (ISSSE), 2010 International Symposium on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-6352-7

Type

conf

DOI

10.1109/ISSSE.2010.5606995

Filename

5606995