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AssigneeEMS Technologies Canada, Ltd.
InventorsEric Amyotte, Martin Gimersky, Jean-Daniel Richerd, Chuck Mok
Estimating the term…
A multimode horn used to feed an antenna includes a generally hollowed conical structure for transmitting and/or receiving an electromagnetic signal there through. The structure flaring radially outwardly from a throat section to an aperture has a pre-determined size and an internal wall with a plurality of discontinuities for altering the mode content of the signal to achieve a balance between a plurality of performance parameters of the antenna over a pre-determined frequency range of the signal. At least one performance parameter is from the group of horn on-axis directivity, horn pattern beamwidth, antenna illumination edge-taper, antenna illumination profile and antenna spill-over losses. The discontinuities are a combination of different local smooth profiles and/or steps and/or corrugations and/or chokes.
A multimode horn for feeding an antenna, comprising a generally hollowed conical structure for either transmitting or receiving an electromagnetic signal therethrough and flaring radially outwardly from a throat section to an aperture having a pre-determined size, said structure having an internal wall with a plurality of discontinuities for altering the mode content of said signal to achieve a balance between a plurality of performance parameters of said antenna over a pre-determined frequency range of said signal, at least one of said plurality of performance parameters being from the group of horn on-axis directivity, horn pattern beamwidth, antenna illumination edge-taper, antenna illumination profile and antenna spill-over losses.
A multiple beam antenna including either reflectors or lens and a plurality of multimode horns to feed the same, each of said plurality of horns generating a respective beam of said antenna and comprising a generally hollowed conical structure for either transmitting or receiving an electromagnetic signal therethrough and flaring radially outwardly from a throat section to an aperture having a pre-determined size, said structure having an internal wall with a plurality of discontinuities for altering the mode content of said signal to achieve a balance between a plurality of performance parameters of said antenna over a pre-determined frequency range of said signal, at least one of said plurality of performance parameters being from the group of horn on-axis directivity, horn pattern beamwidth, antenna illumination edge-taper, antenna illumination profile and antenna spill-over losses.
Dependencies are inferred from the claim text.