Title :
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
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;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996428
