Title :
A new numerical technique for calculating current distributions on curved wire antennas - parametric B-spline finite element method
Author :
Ronglin, Li ; Guangzheng, Ni ; Jihui, Yu ; Zejia, Jiang
Author_Institution :
Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China
fDate :
5/1/1996 12:00:00 AM
Abstract :
A new numerical technique is presented for calculating the current distributions on wire antennas with a high degree of curvature. The geometry of the wire antenna is expressed by a parametric equation and the current is directly expanded into a series of quadratic B-spline basis functions of the parameter, so that the truncation error in modeling the curved wire structure is avoided. This algorithm is used to analyze a circular loop antenna, a conical equiangular-spiral antenna, and a four-arm Archimedian spiral antenna to demonstrate its validity and practical value
Keywords :
antenna theory; conical antennas; current distribution; finite element analysis; loop antennas; series (mathematics); spiral antennas; splines (mathematics); wire antennas; circular loop antenna; conical equiangular-spiral antenna; current distributions; curved wire antennas; four-arm Archimedian spiral antenna; numerical technique; parametric B-spline finite element method; parametric equation; quadratic B-spline basis functions; truncation error; Algorithm design and analysis; Current distribution; Equations; Finite wordlength effects; Geometry; Helical antennas; Piecewise linear approximation; Solid modeling; Spirals; Spline; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
