Title :
Analysis of a Conformal Archimedean Spiral Antenna Printed Within Layered Dielectric Cylindrical Media Using the Method of Moments
Author :
Wu, Junyong ; Khamas, S.K. ; Cook, G.G.
Author_Institution :
Dept. of Electron. & Electr. Eng., Commun. Res. Group, Univ. of Sheffield, Sheffield, UK
Abstract :
A method of moments analysis of a conformal Archimedean spiral antenna is presented where the spiral is printed on a grounded cylindrical substrate with a superstrate. The layered cylindrical media are modelled using dyadic Green´s functions in conjunction with novel asymptotic expressions to accelerate convergence. The results are validated against the limiting case of an equivalent planar structure as well as those obtained using commercial software.
Keywords :
Green´s function methods; conformal antennas; method of moments; microstrip antennas; spiral antennas; asymptotic expressions; conformal Archimedean spiral antenna; dyadic Green´s functions; equivalent planar structure; grounded cylindrical substrate; layered cylindrical media; layered dielectric cylindrical media; method of moments; printed antenna; superstrate; Antenna measurements; Antennas; Green´s function methods; Impedance; Moment methods; Phase measurement; Spirals; Conformal spiral antenna; cylindrical antennas; dyadic Green´s function; method of moments (MoM); multilayered media;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2201117
