Hybrid adaptive antenna array
First Claim
1. A hybrid antenna array comprising:
- (a) a plurality of digital branches, each digital branch including;
(i) an analogue beamforming sub-array, each sub-array having a plurality of antenna elements, a phase shifter adapted to apply a phase shift to the signal from each antenna element, and a combiner adapted to combine the phase shifted signals;
(ii) a signal chain adapted to convert the output of the sub-array to baseband;
(b) a digital processing module, including;
(i) an angle of arrival estimation sub-module adapted to estimate an angle of arrival of a signal at the antenna elements;
(ii) a phase control sub-module adapted to control the phase shift applied by each phase shifter depending on the estimated angle of arrival; and
(iii) a digital beamformer adapted to combine the baseband signals from the digital branches using a weight vector to form an output signal.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is a hybrid antenna array (100) comprising a plurality of digital branches (145), each digital branch including an analogue beamforming sub-array (e.g. 110-1), each sub-array having a plurality of antenna elements (120), a phase shifter (130) adapted to apply a phase shift to the signal from each antenna element, and a combiner (e.g. 135-1) adapted to combine the phase-shifted signals. Each digital branch also includes a signal chain (e.g. 140-1) adapted to convert the output of the sub-array to baseband. The hybrid antenna array also comprises a digital processing module (150), including: an angle of arrival estimation sub-module (155) adapted to estimate an angle of arrival of a signal at the antenna elements; a phase control sub-module (170) adapted to control the phase shift applied by each phase shifter depending on the estimated angle of arrival; and a digital beamformer (165) adapted to combine the baseband signals from the digital branches using a weight vector to form an output signal (180).
-
Citations
10 Claims
-
1. A hybrid antenna array comprising:
-
(a) a plurality of digital branches, each digital branch including; (i) an analogue beamforming sub-array, each sub-array having a plurality of antenna elements, a phase shifter adapted to apply a phase shift to the signal from each antenna element, and a combiner adapted to combine the phase shifted signals; (ii) a signal chain adapted to convert the output of the sub-array to baseband; (b) a digital processing module, including; (i) an angle of arrival estimation sub-module adapted to estimate an angle of arrival of a signal at the antenna elements; (ii) a phase control sub-module adapted to control the phase shift applied by each phase shifter depending on the estimated angle of arrival; and (iii) a digital beamformer adapted to combine the baseband signals from the digital branches using a weight vector to form an output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification