Wavefront-projection beamformer
First Claim
Patent Images
1. A method of digital beam forming comprising:
- performing a wavefront projection on a plurality of elements of an array of elements; and
thereafter, performing a phase compensated projection for the plurality of elements.
0 Assignments
0 Petitions
Accused Products
Abstract
A method for beamforming signals for an array of receiving or transmitting elements includes the steps of selecting a beam elevation and azimuth and grouping elements of an antenna array into element ensembles that are substantially aligned with a wavefront projection on the antenna array corresponding to the selected beam elevation and azimuth.
37 Citations
41 Claims
-
1. A method of digital beam forming comprising:
-
performing a wavefront projection on a plurality of elements of an array of elements; and
thereafter, performing a phase compensated projection for the plurality of elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An apparatus for digital beam forming comprising:
-
means for performing a wavefront projection; and
means for performing a phase compensated projection after the wavefront projection. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A method of forming a digital beam comprising:
-
grouping elements in both different rows and different columns in response to a beam projection for the digital beam;
phase compensating each of the elements; and
generating a beam in response to phase compensating and grouping. - View Dependent Claims (21, 22, 23, 24, 25, 26)
-
-
27. A beamformer for a beam having an elevation and azimuth comprising:
a selector for grouping elements of an antenna array into element groups that are substantially aligned with a wavefront projection on the antenna array corresponding to the beam elevation and azimuth. - View Dependent Claims (28, 29, 30, 31, 32, 35, 36, 37, 38, 39, 40, 41)
- 33. A beamformer as recited in 27 further comprising a back-projection signal calculator for calculating a back-projection signal for each antenna element from the phase weighted projection signals.
Specification