WAVEGUIDE FEED ARRAY WITH OVERLAPPING CLUSTERS FOR USE IN A TRANSMIT/RECEIVE MULTIPLE-FEED-PER-BEAM SINGLE REFLECTOR ANTENNA SYSTEM

Abstract: a waveguide feed array includes overlapping clusters of elementary feeds, each feed configured to operate in at least two distinct frequency bands with dual-polarization in each frequency band. the feeds have at least four waveguide ports each, one for each pairing of frequency band and polarization, and are connected through beamforming networks, one per frequency band. clusters of feeds each have at least two beamforming networks and at least two common ports. the waveguide feed array further has a main longitudinal direction that is substantially orthogonal to a plane of an aperture of the waveguide feed array, the plane being defined by two main directions. adjacent clusters along a first of the main directions are configured to operate, for a given frequency band, in different polarizations. at least one feed of each cluster is rotated around the main longitudinal direction with reference to the other feeds of said cluster.

Inventor(s): Nelson Fonseca

CPC Classification: H01Q21/064 ({using horn or slot aerials (slotted waveguides arrays )})

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