Patent
Multimode horn antenna
TLDR
In this article, a conical or pyramidal horn-radiator having small flare angle changes within the horn at cross-section dimensions much larger than the input waveguide is used to excite higher order modes which control the E-plane aperture distribution and produce a tapered aperture field in the Eplane.Abstract:
A conical or pyramidal horn-radiator having small flare angle changes within the horn at cross-section dimensions much larger than the input waveguide, to excite higher order modes which control the E-plane aperture distribution and produce a tapered aperture field in the E-plane. Equal E- and H-plane beamwidths are thereby obtained. The horn has particular use as a feed for a parabolic reflector, such as a Cassegrain antenna. The flare angle changes are used for pattern improvement in a first frequency band, and separate means are provided for pattern improvement in a second band.read more
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Patent
Feed horn for a telecommunications antenna
TL;DR: In this paper, a feed horn comprising a radiating portion having a circular aperture, a transition formed by progressively varying waveguide sections and a flange which provides a coupling with a rectangular waveguide is fabricated from moldable material and designed to be fixed in a support.
Patent
Flared microwave feed horns and waveguide transitions
Saad S. Saad,Charles M. Knop +1 more
TL;DR: In this article, a horn-reflector antenna comprising a paraboloidal reflector for transmitting and receiving microwave energy, and a flared feed horn for guiding microwave energy to and from the reflector, the longitudinal shape of at least a section of the horn at the end where the horn begins to flare outwardly was defined by the equation.
Patent
Dual mode feed horn or horn antenna for two or more frequency bands
TL;DR: In this paper, the slope of the inside wall of a conical waveguide is selected to cancel the electric field at the aperture of the horn in the higher frequency band, thereby producing substantially equal power patterns in the E and H planes in the high frequency band.
Patent
Multiple flared antenna horn with enhanced aperture efficiency
Arun K. Bhattacharyya,James Sor +1 more
TL;DR: An antenna horn having multiple flared sections with their slopes and lengths selected to enhance desirable electromagnetic modes and to suppress undesirable modes at the horn aperture, thereby increasing the aperture efficiency and antenna gain this article.
Patent
Overmoded tapered waveguide transition having phase shifted higher order mode cancellation
Saad S. Saad,Charles M. Knop +1 more
TL;DR: In this article, a phase-overmoded, tapered waveguide transition has a central section which is tapered linearly in the longitudinal direction and two end sections which are tapered curvilinearly in a longitudinal direction.
References
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Patent
Dual mode conical horn antenna
TL;DR: A circular rod having tapered ends is coaxially mounted within a conical horn antenna as mentioned in this paper, which transforms smoothly over the length of the rod into the hybrid HE*11 mode.