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The effects of magnetic biasing fields on the far‐field distributions of source on composite ferrite media
Author(s) -
Wenyan Yin,
Wei Wan,
Wenbing Wang
Publication year - 1994
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650071210
Subject(s) - ferrite (magnet) , composite number , biasing , radiation pattern , radiation , materials science , near and far field , optics , computational physics , physics , antenna (radio) , engineering , composite material , electrical engineering , voltage
In this article the radiation characteristics of a dipole antenna on grounded composite ferrite structures are studied using the generalized spectral‐domain–exponential‐matrix technique. Numerical results are presented to show the effects of internal dc magnetic bias fields, operating frequency, geometrical sizes, and losses of substrates on the radiation pattern and scanning characteristics of dipoie antenna. The figures show that it is possible to obtain an optimum radiation pattern by choosing suitable constitutive and geometrical parameters of ferrite materials. © 1994 John Wiley & Sons, Inc.