Premium
Characterization of biconical transmitting antennas
Author(s) -
Grimes Dale M.,
Badii Vahid,
Tomiyama Ken
Publication year - 1991
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/90rs02469
Subject(s) - conic section , biconical antenna , radius , physics , antenna (radio) , electric field , voltage , directional antenna , current (fluid) , field (mathematics) , mathematics , mathematical analysis , optics , computational physics , geometry , smart antenna , computer science , telecommunications , quantum mechanics , computer security , pure mathematics , thermodynamics
We have obtained a general, numerical solution of an ideal biconical transmitting antenna, with arbitrary arm length and conic angle. The solution evaluates the field coefficients associated with the electric multipolar expansion terms both within the antenna region and external to it; the set must necessarily be truncated, and we truncate our set with 16 terms. From the field coefficients we obtain surface current and charge densities resulting from a normalized input current, for several antennas. We evaluate resonant frequencies versus cone angle for the first three resonances. Using a normalized input voltage, we obtain the complex power at all radii; conservation of energy, in turn, permits us to solve for the reactive energy of the field per unit radius.