Corrugated-Conical Horn Analysis Using Aperture Field With Quadratic Phase

• Published in: IEEE transactions on antennas and propagation Vol. 59; no. 9; pp. 3453 - 3457
• Main Authors: Densmore, A., Rahmat-Samii, Y., Seck, G.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-09-2011; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna radiation patterns; Antenna theory; Antennas; Apertures; Applied sciences; Approximation; Approximation methods; Beams (radiation); Coordinate measuring machines; corrugated antennas; corrugated horn antennas; corrugated waveguides; Corrugating; Exact sciences and technology; Horn antennas; Horns; Linear polarization; Mathematical analysis; Mathematical model; Microwave antennas; Radiocommunications; Satellite telecommunications. Space telecommunications; Telecommunications; Telecommunications and information theory; Rectilinear polarization; corrugated waveguides; Horn antenna; Formal method; Antenna theory; Conical antenna; Circular polarization; Wireless telecommunication; Satellite telecommunication; Far field; Baseline; Field equation; Corrugated antenna; corrugated antennas; corrugated horn antennas; Radiation pattern; Corrugated waveguide
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2011.2161552

An approximation of the far-field radiation pattern of the corrugated-conical horn, by integration of the aperture field, augmented with perimeter-matched quadratic radial phase, is sufficient to establish a baseline design for the feedhorn of a satcom antenna system. The approximated far-field patterns compare well to more formal analysis methods, even reasonably so in the main beam with a semi-flare angle as wide as 45 deg for the first two angular modes. The field equations are presented in a compact complex exponential form, from which the components corresponding to excitation with any polarization sense may be obtained (either sense of circular/elliptical polarization or linear polarization with arbitrary orientation).