Near-field patterns from pyramidal horn antennas: numerical calculation and experimental verification

Near-field patterns from pyramidal horn antennas: numerical calculation and experimental verification

The electromagnetic field close to a pyramidal horn antenna has been predicted using a numerical technique assuming a spherical phase front in the aperture of the horn. Comparison with experimental results using an infrared imaging technique has shown that the best fit is for a phase front that is 1...

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Veröffentlicht in:IEEE transactions on electromagnetic compatibility 1991-08, Vol.33 (3), p.188-196
Hauptverfasser: Metzger, D.W., Norgard, J.D., Sega, R.M.
Format: Artikel
Sprache:eng
Schlagworte:
Antenna accessories
Antennas
Aperture antennas
Applied sciences
Electromagnetic fields
Exact sciences and technology
Geometry
Horn antennas
Infrared imaging
Integral equations
Maxwell equations
Radiocommunications
Surface fitting
Surface waves
Telecommunications
Telecommunications and information theory
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Beschreibung
Zusammenfassung:The electromagnetic field close to a pyramidal horn antenna has been predicted using a numerical technique assuming a spherical phase front in the aperture of the horn. Comparison with experimental results using an infrared imaging technique has shown that the best fit is for a phase front that is 1.25 times more curved than a sphere. The infrared imaging method has been demonstrated to be very useful for mapping the fields in a region that is sensitive to the introduction of metallic probes.< >
ISSN:0018-9375
1558-187X
DOI:10.1109/15.85132