Systems, methods, and devices for implementing antenna diversity with wireless communications devices

A system comprising:

• a plurality of antennas;
• a host processor;
• an integrated circuit chip comprising:
• a transceiver coupled to the plurality of antennas and configured to send and receive Bluetooth data packets in accordance with a Bluetooth protocol;
• a processor configured to:
• in a first mode, calculate an angle of arrival (AoA) or an angle of departure (AoD) associated with the plurality of antennas;
• and
• in a second mode, send data to and receive data from a wireless communications device via at least a first antenna of the plurality of antennas, wherein the first antenna is selected from the plurality of antennas by the processor based on one of a first plurality of signal measurements between the plurality of antennas and the wireless communications device, wherein the first plurality of signal measurements corresponds to a continuous tone extension (CTE) portion of a Bluetooth data packet.

A method of a first wireless communications device, the method comprising:

• receiving a first plurality of signals via each of a plurality of antennas at the first wireless communications device;
• determining, using a processor, a signal measurement for each of the plurality of antennas, the signal measurement comprising a signal strength or signal quality measurement;
• identifying, using the processor, a first antenna based on the determined signal measurements;
• and
• selecting, using the processor, the first antenna for communication with a second wireless communications device, wherein at least the receiving and determining correspond to a designated portion of a data packet, wherein the first plurality of signals are transmitted and received using the designated portion of the data packet, wherein the data packet is a Bluetooth data packet, wherein the designated portion is a continuous tone extension (CTE) portion of the Bluetooth data packet, and wherein the first antenna has a designated signal strength or signal quality.