Title :
Spectral domain analysis of resonant characteristics of a circular patch microstrip antenna on uniaxial substrate
Author :
Motevasselian, Alireza ; Salehi, Mohsen ; Tavakoli, Ahad
Author_Institution :
Amirkabir Univ. of Technol., Tehran
Abstract :
A full-wave analysis for determining the resonant frequency and quality factor of a circular patch microstrip antenna printed on a uniaxial anisotropic substrate is presented. Green´s functions of the structure are determined in Hankel transform domain (HTD) using Hertz potential vectors. Galerkin´s method, together with parsval´s relation in Hankel transform domain is then applied to compute the resonant frequency and quality factor. Wave equation is solved in cylindrical coordinates for the structure to estimate the basis function. The numerical results show that there is a substantial deviation in calculated resonant frequency when substrate dialectric anisotropy is considered. The variations of resonant frequency and quality factor of the structure for several values of substrate thickness and patch radius are presented.
Keywords :
Galerkin method; Green´s function methods; Hankel transforms; Q-factor; anisotropic media; microstrip antennas; wave equations; Galerkin´s method; Hankel transform domain; Hertz potential vectors; Wave equation; circular patch microstrip antenna; dialectric anisotropy; full-wave analysis; parsval´s relation; quality factor; resonant frequency; spectral domain analysis; uniaxial anisotropic substrate; Anisotropic magnetoresistance; Green´s function methods; Microstrip antennas; Moment methods; Partial differential equations; Q factor; Resonance; Resonant frequency; Spectral analysis; Transforms; Hankel transform; circular patch; microstrip antenna; quality factor; uniaxial anisotropic substrate;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429801
