Title :
A spiral antenna with a circular reflector
Author :
Zhang, Xiaomiao ; Yan, Zehong ; Wei, Wenyuan ; Li, Yanping ; Shi, Yongkang
Author_Institution :
Inst. of Antennas & EM Scattering, Xidian Univ., Xi´´an, China
fDate :
Oct. 28 2003-Nov. 1 2003
Abstract :
A numerical solution for a spiral antenna with a finite reflector is presented. The analysis is based on the method of moments (MoM) and Galerkin´s matching. The antenna geometric parameters are optimized to obtain the best circular polarization (CP) axial ratios (AR) in the main beam of the pattern. A block matrix inversion technique is used for the computation to be more efficient. Simulated results are well consistent with the measured ones, while the antenna height is less than a quarter of wavelength.
Keywords :
Galerkin method; matrix inversion; method of moments; optimisation; polarisation; reflector antennas; spiral antennas; Galerkin matching; antenna geometric parameters; block matrix inversion technique; circular polarization; circular reflector; finite reflector; method of moments; optimization; spiral antenna; Antenna measurements; Bandwidth; Computational modeling; Equations; Message-oriented middleware; Moment methods; Reflector antennas; Spirals; Transmission line matrix methods; Wavelength measurement;
Conference_Titel :
Antennas, Propagation and EM Theory, 2003. Proceedings. 2003 6th International SYmposium on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-7831-8
DOI :
10.1109/ISAPE.2003.1276615
