Improved Formulation for Admittance of Thin and Short Monopole Driving From Coaxial Line Into Dissipative Media

An improved formulation of the admittance equation for small and thin monopole is presented where the coefficient of the capacitive correction term can be calculated directly from the values of the inner and outer radius of the coaxial line. The results were found to agree well with measurements and...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2009, Vol.8, p.1246-1249
Main Authors: Kok Yeow You, Abbas, Z., Khalid, K., Ngoon Fah Kong
Format: Article
Language:English
Subjects:
Admittance
Antennas
Apertures
Capacitance
Coaxial components
Conducting materials
Electrical impedance
End correction
Equations
Finite element method
Formulations
Impedance
input admittance
Materials testing
Mathematical analysis
Mathematical models
monopole
Monopoles
open-ended coaxial line
Permittivity
Propagation constant
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Summary:An improved formulation of the admittance equation for small and thin monopole is presented where the coefficient of the capacitive correction term can be calculated directly from the values of the inner and outer radius of the coaxial line. The results were found to agree well with measurements and the finite element method (FEM). Some rules, features, and limitations of the improved formula are also discussed.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2009.2035645