Title :
Analysis of Spherical Lens Antennas - Comparison of Three Analysis Methods
Author :
Komljenovic, Tin ; Burum, Niksa ; Sipus, Zvonimir
Author_Institution :
Dept. of Wireless Commun., Univ. of Zagreb, Zagreb
Abstract :
The paper presents a comparison of three approaches for analyzing spherical lens antennas - spectral-domain method, ray-tracing method, and time- domain finite integration technique (FIT) implemented in commercial software CST Microwave Studioreg. The spectral-domain method takes advantage of transforming the three-dimensional problem into a set of one- dimensional problems. The spherical lens antenna is rigorously taken into account by implementing the Green´s functions for the multilayer spherical structures. The ray- tracing method is a general analysis method that can be applied to all kinds of lenses with general (non-symmetric) shape. Finally, FIT implemented in commercial software is general purpose full-wave method. The results of the analysis are compared with measured radiation pattern of a 12 layer Luneburg lens antenna.
Keywords :
Green´s function methods; integration; lens antennas; ray tracing; time-domain analysis; Green´s functions; commercial software; general purpose full-wave method; multilayer spherical structures; ray-tracing method; spectral-domain method; spherical lens antennas; time-domain finite integration technique; Antenna measurements; Antenna radiation patterns; Green´s function methods; Lenses; Microwave antennas; Microwave theory and techniques; Nonhomogeneous media; Pattern analysis; Ray tracing; Shape; Ray-tracing method; Spectral-domain analysis; Spherical lens antennas;
Conference_Titel :
Microwave Techniques, 2008. COMITE 2008. 14th Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4244-2137-4
Electronic_ISBN :
978-1-4244-2138-1
DOI :
10.1109/COMITE.2008.4569890
