Optimal design of a spherical lens antenna with practical feed model

Author

Huang, Ming ; Yang, Shiwen ; Xiong, Wei ; Liu, Zhijia ; Nie, Zaiping

Author_Institution

Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China (UESTC), Chengdu, China

fYear

2011

fDate

3-8 July 2011

Firstpage

926

Lastpage

929

Abstract

A novel approach for the analysis and optimal design of a spherical lens antenna (SLA) with practical feed model (PFM) is proposed. The vector spherical wave function expansions (VSWE) combined with differential evolution (DE) algorithm is adopted for the optimal design of SLAs. The near-field aperture distributions of the dielectric loaded horn feed (Ku band) and the corrugated horn feed (Ka band) were obtained using the full wave simulation and were then taken into account in the DE optimization. The radiation characteristics of an optimized 650mm 2-layer SLA are presented and compared to simulation results. Good agreement is obtained. By substituting these optimal structural parameters of SLA into the corresponding hemispherical lens antenna (HLA), the gain of HLA can be readily predicted.

Keywords

differential equations; lens antennas; optimisation; 2-layer SLA; DE optimization; HLA; PFM; VSWE; corrugated horn feed; dielectric loaded horn feed; differential evolution algorithm; hemispherical lens antenna; optimal design; practical feed model; size 650 mm; spherical lens antenna; vector spherical wave function expansions; Apertures; Dielectrics; Feeds; Gain; Lenses; Polyethylene; Lens antennas; differential evolution; spherical wave function;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Conference_Location

Spokane, WA

ISSN

1522-3965

Print_ISBN

978-1-4244-9562-7

Type

conf

DOI

10.1109/APS.2011.5996428

Filename

5996428