Title :
Radiation pattern of helical microstrip antenna mounted on a dielectric coated circular cylinder
Author :
Sun, Jin ; Wan, Chao-Fu ; Li, Le-Wei ; Leong, Mook-Seng
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
A Green´s function approach is presented to calculate the radiation pattern of a center-fed helical microstrip antenna mounted on a circular cylinder with a superstrate. An analytic expression of current on the helical microstrip antenna is rigorously obtained by solving a mixed potential integral equation (MPIE) in the spatial domain. With the analytic expression of the current, the radiation pattern of the helical antenna can be analytically calculated using the far field Hankel transform. The present method can easily be applied to analyze the effects of the substrate and superstrate on the radiation pattern of the helical antenna. Good agreement between the results of the Green´s function approach and those of the reciprocity approach provides validation for the present method.
Keywords :
Green´s function methods; Hankel transforms; antenna radiation patterns; antenna theory; current distribution; helical antennas; integral equations; method of moments; microstrip antennas; Green function; MoM; current distribution; dielectric coated circular cylinder; far field Hankel transform; helical microstrip antenna; mixed potential integral equation; radiation pattern; reciprocity approach; spatial domain; Antenna radiation patterns; Current distribution; Dielectrics; Geometry; Green´s function methods; Helical antennas; Integral equations; Microstrip antennas; Pattern analysis; Permittivity;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1329684
