US 12,267,142 B2
Forming a beam from a subscriber module of a fixed wireless access communication system
Nigel Jonathan Richard King, Ashburton (GB); Thirumaran Muthiah, Ashburton (GB); and Matt Fuller, Ashburton (GB)
Assigned to Cambium Networks Ltd, Ashburton (GB)
Filed by Cambium Networks Ltd, Ashburton (GB)
Filed on May 1, 2023, as Appl. No. 18/310,313.
Application 18/310,313 is a continuation of application No. 17/547,022, filed on Dec. 9, 2021, granted, now 11,677,456.
Claims priority of application No. 2019618 (GB), filed on Dec. 11, 2020.
Prior Publication US 2023/0268978 A1, Aug. 24, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/08 (2006.01); H01Q 3/20 (2006.01)
CPC H04B 7/086 (2013.01) [H01Q 3/20 (2013.01); H04B 7/0888 (2013.01)] 16 Claims
OG exemplary drawing
 
9. A method of forming a beam from a subscriber module of a fixed wireless access communication system, the subscriber module having an offset Gregorian antenna system comprising a primary reflector dish, a secondary reflector, an array of antenna elements and a beamforming network, the beamforming network being configured to form a beam using an antenna weight vector selected from a pre-determined plurality of antenna weight vectors, wherein the array of antenna elements is arranged to feed the secondary reflector to form the beam from the primary reflector dish, the method comprising:
providing the pre-determined plurality of antenna weight vectors configured to form a plurality of beams, the orientations of the plurality of beams being arranged in a grid comprising a plurality of rows, each of the pre-determined plurality of antenna weight vectors being configured to form a respective beam from the primary reflector dish of the Gregorian antenna arrangement by forming a respective feed beam from the array of antenna elements,
wherein a relationship between the azimuth and elevation direction of each feed beam and the azimuth and elevation direction of the respective beam from the primary reflector dish is a non-linear function of azimuth and elevation.