By Topic

Modeling of Wideband Antennas by Frequency-Dependent Hertzian Dipoles

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Xuan Hui Wu ; Dept. of Electr. Eng., Univ. of Mississippi, Oxford, MS ; Kishk, A.A. ; Glisson, A.W.

It has been found that a set of Hertzian dipoles can be optimized to model the radiation characteristics of an antenna. However, the existing models are normally for narrowband antennas and invalid for a wideband antenna. In addition, it is difficult to combine several such models at different frequencies into a wideband model because the interpolation of dipole parameters is not applicable. This paper presents a procedure to optimize a Hertzian dipole model for a wideband antenna, where each dipole parameter is a polynomial in the phase constant. The tangential electric field on a surface enclosing the antenna is first obtained by full wave analysis at multiple frequencies. An optimization method is then applied to determine the polynomial coefficients for each dipole parameter, by minimizing the error between the exact field and the field due to the dipoles. As an example, a wideband stacked dielectric resonator antenna (DRA) is modeled by four electric and three magnetic Hertzian dipoles. The dipole model is used to efficiently study the radiation characteristics of the DRA mounted on a circular ground plane. Moreover, it is pointed out that the dipole model is resistant to Gaussian noise added to the near-field data, and is frequency scalable.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:56 ,  Issue: 8 )