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A new numerical technique for calculating current distributions on curved wire antennas - parametric B-spline finite element method

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4 Author(s)
Li Ronglin ; Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China ; Ni Guangzheng ; Yu Jihui ; Jiang Zejia

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

Published in:

IEEE Transactions on Magnetics  (Volume:32 ,  Issue: 3 )