An apparatus is provided that includes a planar printed circuit board having at least receiver circuitry. The apparatus also includes a plurality of directional antennas that have radiation patterns that cover a respective plurality of partially overlapping sectors that extend outwardly from the printed circuit board. The apparatus further includes control circuitry for controlling a discovery process for discovering availability of multiple radio links. The control circuitry is configured to receive a plurality of quality measurements for signals received via the respective plurality of directional antennas. The control circuitry is also configured to select directional antennas for communicating data via radio links based on the plurality of quality measurements. A portable electronic device and a stationary electron device that include the apparatus are also provided.

Embodiments disclosed herein include headphone devices with spatially diverse antennas employing multiple operational modes and antenna switching policies. The headphone device may identify a current mode of operation and wirelessly communicate with at least one external device based at least in part on the current mode of operation. Further, operating in a first mode of operation, the headphone device may cause switching circuitry to selectively couple a first antenna to the common port in accordance with a first antenna switching policy. While operating in the second mode of operation, the headphone device may cause circuitry to selectively couple a second antenna to the common port in accordance with a second antenna switching policy that is different from the first antenna switching policy.

Embodiments of the present disclosure relate to an antenna switching method, a terminal device and a communication device. The method comprises: a first terminal device receives a configuration message; the configuration message indicates M sounding reference signal (SRS) resource set groups, each SRS resource set group contains at least one SRS resource set, and M is a positive integer; each SRS resource set group corresponds to a corresponding antenna switching configuration, and the antenna switching configuration supports the first terminal device to have more than four receiving antennas. Embodiments of the present disclosure can achieve antenna switching for a terminal device having many (e.g., more than four) receiving antennas.

A fire, burglary or access control security communicator having an antenna switching system and method that is external to the cell module to allow complete switching from a primary to a secondary antenna based on signal strength, error rate or other performance parameters.

Described herein are systems, methods and devices for implementing a temperature-aware, multi-antenna scheduler that cools mmWave devices by preventing heat buildup via switching or distributing a data stream to other redundant antennas, allowing for dissipation of heat as well as providing reliable connectivity.

A communication device comprises a receiver including at least two receive antennas and configured to receive at least one reference signal of a plurality of reference signals, each reference signal being transmitted from at least one base station at a predefined reference signal transmission time; a controller configured to switch between at least two receive configurations of the at least two antennas during a reception period of the at least one reference signal; and a signal quality determiner configured to determine a parameter indicative of a first signal quality of the received reference signal for each receive configuration.

Disclosed is a system for performing Massive MIMO or Multi-User MIMO using a gradient index sphere (such as a Luneburg Lens). The gradient index sphere may have a plurality of radiators disposed along its outer surface such that each radiator radiates inward toward the center of the sphere so that the sphere focuses the energy from each radiator to form a tight beam. This provides for improved uplink gain for detecting and locating a mobile device within range of the system, and it enables high performance with reduced signal processing required for array-based beamforming.

A communication system includes a variable device, which is one of a management device and a terminal device, having an antenna determination unit and a transmission instruction unit. State information is information indicating a state of a housing that houses the communication system. The antenna determination unit is configured to determine a transmission antenna as an applicable antenna for a wireless communication with a target device in order to achieve a predetermined communication quality when it is determined that the state of the housing has changed based on the state information. The target device, which is the other of the management device and the terminal device, is a device with which the variable device communicates. A transmission instruction unit instructs a wireless communication device in the variable device to perform the wireless communication with the target device by using the applicable antenna.

An electronic device having multiple antenna groups for data communication may determine a temperature of a first antenna group and determine a power gain of a second antenna group. The electronic device may communicate using the second antenna group in response to determining that the temperature of the first antenna group exceeds a temperature threshold and the power gain of the second antenna group exceeds a gain threshold. In some embodiments, the electronic device may receive communication link preferences, determine an antenna group that is disposed outside of thermal hotspots of the electronic device, and determine a beam that enables the communication link preferences via the antenna group. The electronic device may then transmit or receive data via the antenna group by forming the beam.

A front-end module (FEM) for a 6.1 GHz Wi-Fi acoustic wave resonator RF filter circuit. The device can include a power amplifier (PA), a 6.1 GHz resonator, and a diversity switch. The device can further include a low noise amplifier (LNA). The PA is electrically coupled to an input node and can be configured to a DC power detector or an RF power detector. The resonator can be configured between the PA and the diversity switch, or between the diversity switch and an antenna. The LNA may be configured to the diversity switch or be electrically isolated from the switch. Another 6.1 GHZ resonator may be configured between the diversity switch and the LNA. In a specific example, this device integrates a 6.1 GHz PA, a 6.1 GHZ bulk acoustic wave (BAW) RF filter, a single pole two throw (SP2T) switch, and a bypassable LNA into a single device.