Beamforming architecture for multi-beam multiple-input-multiple-output (MIMO)

A wireless communications device, comprising:

• a plurality of antenna arrays configured for a Multiple-Input-Multiple-Output (MIMO) antenna array configuration;
• a receiver coupled to the MIMO antenna array configuration to receive signals;
• and
• a transmitter coupled to the MIMO antenna array configuration to transmit signals,
• wherein the MIMO antenna array configuration comprises a plurality of Radio Frequency (RF) chains coupled to the plurality of antenna arrays,
• wherein the number of antenna arrays is larger than the number of RF chains,
• wherein a number of antenna elements and phase shifters that form a first of the antenna arrays is the same as a number of antenna elements and phase shifters that form a second of the antenna arrays, wherein the first antenna array and the second antenna array are asymmetric relative to a field of view boundary.

A Multiple-Input-Multiple-Output (MIMO) antenna array configuration, comprising:

• a plurality of Radio Frequency (RF) chains;
• a plurality of antenna elements;
• and
• a plurality of phase shifters,
• wherein the plurality of antenna elements and plurality of phase shifters form a plurality of antenna arrays that are coupled to the RF chains,
• wherein a number of antenna arrays in the plurality of antenna arrays is larger than a number of RF chains in the plurality of RF chains,
• wherein a number of the plurality of antenna elements and phase shifters that form a first of the antenna arrays is different than a number of the plurality of antenna elements and phase shifters that form a second of the antenna arrays, wherein the first antenna array and the second antenna array are asymmetric relative to a field of view boundary.