Accurate modelling of anti-resonant dipole antennas using the method of moments

Accurate modelling of anti-resonant dipole antennas using the method of moments

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

The authors demonstrate that the difficulties encountered when modelling anti-resonant antennas are primarily due to the conventional variable gap source model which is commonly employed in thin-wire moment method codes. An alternative source model is introduced, for use in analysing this class of antennas, where the essential feature is that the gap width of the feed region remains fixed. The fixed gap model is compared to the variable gap model for both a half-wave dipole, where the variable gap is still a valid source model, and for a full-wave anti-resonant dipole, where the fixed gap source is shown to be superior to the variable gap model.


    1. 1)
      • R. Harrington . (1968) Field computation by moment methods.
    2. 2)
      • F.M. Tesche . The effect of the thin-wire approximation and the source gapmodel on the high-frequency integral solution of radiating antennas. IEEE Trans. , 210 - 211
    3. 3)
      • E.K. Miller . PCs for AP and other EM reflections. IEEE Trans. AntennasPropagat. Mag. , 1 , 94 - 97
    4. 4)
      • D.H. Werner . A method of moments approach for the efficient and accuratemodeling of moderately thick cylindrical wire antennas. IEEE Trans. , 3 , 373 - 382
    5. 5)
      • E.K. Miller . Admittance dependence of the infinite cylindrical antenna uponexciting gap thickness. Radio Sci. , 12 , 1431 - 1435
    6. 6)
      • R.A. Hurd , J. Jacobsen . Admittance of an infinite cylindrical antennawith realistic gap field. Electron. Lett. , 19 , 420 - 421
    7. 7)
      • T. Do-Nhat , R.H. MacPhie . The static electric field distribution betweentwo semi-infinite circular cylinders: A model for the feed gap of a dipole antenna. IEEE Trans. , 1273 - 1280
    8. 8)
      • D.J.J. Van Rensburg , D.A. McNamara . On quasistatic source modelsfor wire dipole antennas. Microw. Opt. Technol Lett. , 11 , 396 - 398
    9. 9)
      • G.P. Junker , A.A. Kishk , A.W. Glission . A novel delta gap sourcemodel for center fed cylindrical dipoles. IEEE Trans. , 537 - 540
    10. 10)
      • Junker, G.P., Glisson, A.W., Kishk, A.A.: `On the stability of simplevoltage source models for the study of mutual coupling effects', 12th Annual Rev.Progress Appl. Comput. Electromagn., 1996, Monterey, CA, p. 842–847.

Related content

This is a required field
Please enter a valid email address