Analysis of pyramidal horn antennas using moment methods

Kefeng Liu, Constantine Balanis, Craig R. Birtcher, George C. Barber

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

A hybrid numerical technique is developed for electrically large pyramidal horn antennas radiating in free space. A stepped-waveguide method is used to analyze the interior surfaces of the horn transition. The electric field integral equation (EFIE) is employed on the outer surfaces of the pyramidal horn including the radiating aperture. Meanwhile, the magnetic field integral equation (MFIE) is used on the aperture to relate the aperture fields and those in the horn transition. The resultant hybrid field integral equation (HFIE) is solved numerically by the method of moments. This formulation is both accurate and numerically stable so that high-gain microwave pyramidal horns can be analyzed rigorously. Far-field radiation patterns, both computed and measured, are presented for three electrically-large X-band horn antennas. The comparisons demonstrate that this method is accurate enough to predict the fine pattern structure at wide angles and in the back region. Computed far-field patterns and aperture field distributions of two smaller X-band horns are also presented along with a discussion on the validity of the approximate aperture field distributions routinely used in the analysis and design of pyramidal horns.

Original languageEnglish (US)
Pages (from-to)1379-1388
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Volume41
Issue number10
DOIs
StatePublished - Oct 1993

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Horn antennas
Method of moments
Integral equations
Waveguides
Microwaves
Electric fields
Magnetic fields

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Analysis of pyramidal horn antennas using moment methods. / Liu, Kefeng; Balanis, Constantine; Birtcher, Craig R.; Barber, George C.

In: IEEE Transactions on Antennas and Propagation, Vol. 41, No. 10, 10.1993, p. 1379-1388.

Research output: Contribution to journalArticle

Liu, Kefeng ; Balanis, Constantine ; Birtcher, Craig R. ; Barber, George C. / Analysis of pyramidal horn antennas using moment methods. In: IEEE Transactions on Antennas and Propagation. 1993 ; Vol. 41, No. 10. pp. 1379-1388.
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