Devices and methods for testing microelectronic assemblies including wireless communications are disclosed herein. For example, in some embodiments, a wireless testing system may include a radio frequency (RF) shielded chamber; a device under test (DUT) in the RF shielded chamber, wherein the DUT includes an array of first antenna elements; a testing apparatus in the RF shielded chamber including an array of second antenna elements at a first surface of a substrate to receive a test signal from the DUT, wherein a distance between individual second antenna elements and an adjacent second antenna element is at least half of a wavelength of the test signal, and wherein a distance between the first antenna elements and the second antenna elements is within a near-field region; and an array of electrical switches, wherein an individual electrical switch is coupled to a respective individual second antenna element.

A method for detecting the state of the proximity sensor, applied to a terminal including the proximity sensor and an antenna, includes: sending a predetermined instruction to the proximity sensor; determining whether the proximity sensor is abnormal based on a feedback result of the proximity sensor to the predetermined instruction; and maintaining the antenna transmitting power at a low power if the proximity sensor is abnormal. Through the feedback of the proximity sensor to the request to obtain the capacitance value, it is determined whether the proximity sensor can work normally, and in a case that the proximity sensor cannot work normally, the antenna transmitting power is reduced to avoid the continuous high antenna transmitting power due to the inability of the proximity sensor to work normally, which reduces the radiation to the human body.

A method for detecting the state of the proximity sensor, applied to a terminal including the proximity sensor and an antenna, includes: sending a predetermined instruction to the proximity sensor; determining whether the proximity sensor is abnormal based on a feedback result of the proximity sensor to the predetermined instruction; and maintaining the antenna transmitting power at a low power if the proximity sensor is abnormal. Through the feedback of the proximity sensor to the request to obtain the capacitance value, it is determined whether the proximity sensor can work normally, and in a case that the proximity sensor cannot work normally, the antenna transmitting power is reduced to avoid the continuous high antenna transmitting power due to the inability of the proximity sensor to work normally, which reduces the radiation to the human body.

Methods and systems are provided for dynamically detecting and correcting the deactivation of beamforming from an antenna. One or more users are identified as present within a particular geographic area typically served by beamforming, and the average signal strength of the one or more user devices is monitored. If a threshold level of degradation of the average signal strength is detected, then a beamforming status is determined for one or more of the antennas serving the user device or devices. Based on the determination, corrective measures are taken and beamforming is reactivated.

Methods and systems are provided for dynamically detecting and correcting the deactivation of beamforming from an antenna. One or more users are identified as present within a particular geographic area typically served by beamforming, and the average signal strength of the one or more user devices is monitored. If a threshold level of degradation of the average signal strength is detected, then a beamforming status is determined for one or more of the antennas serving the user device or devices. Based on the determination, corrective measures are taken and beamforming is reactivated.

An electronic device is provided. The electronic device includes a first antenna, a second antenna segmented from the first antenna, a switch selectively coupled to the first antenna and the second antenna, a front end module connected to the switch, and a radio frequency (RF) communication circuit, wherein the RF communication circuit controls to communicate using the first antenna, determines whether radiation power through the first antenna is equal to or greater than a predetermined value, and if the radiation power through the first antenna is greater than or equal to the predetermined value, checks the in-phase quadrature phase (IQ) value of the first antenna, determines whether the IQ value corresponds to a switching condition of the second antenna, and if the IQ value corresponds to the switching condition of the second antenna, may switch the first antenna to the second antenna.

An electronic device is provided. The electronic device includes a first antenna, a second antenna segmented from the first antenna, a switch selectively coupled to the first antenna and the second antenna, a front end module connected to the switch, and a radio frequency (RF) communication circuit, wherein the RF communication circuit controls to communicate using the first antenna, determines whether radiation power through the first antenna is equal to or greater than a predetermined value, and if the radiation power through the first antenna is greater than or equal to the predetermined value, checks the in-phase quadrature phase (IQ) value of the first antenna, determines whether the IQ value corresponds to a switching condition of the second antenna, and if the IQ value corresponds to the switching condition of the second antenna, may switch the first antenna to the second antenna.

Methods, systems, and devices for wireless communications are described for cross-link interference (CLI) measurement and estimation in one or more cells that are inactive or dormant. A user equipment (UE) operating in a first serving cell (e.g., a primary cell (PCell)) may measure one or more reference signals, with the measurements used to estimate one or more CLI measurements of one or more other cells (e.g., one or more secondary cells (SCells)). CLI estimates may be based on scaling factors associated with frequency locations of the PCell and SCell, may be based on a coupling loss estimate associated with different frequency bands, or combinations thereof.

There is provided a self-diagnostic apparatus of a magnetic coupling type. The self-diagnostic apparatus according to an embodiment includes: a signal detection line which is magnetic-coupled with an RF signal line through a magnetic coupling loop; and a signal detector configured to detect a size and a phase of an RF signal by detecting a current flowing through the signal detection line. Accordingly, the apparatus grasps and diagnoses respective operation states of channels by itself in a beamforming system, without increasing and a size of the system and degrading performance.

Components, systems, and methods for determining propagation delay of communications in distributed antenna systems are disclosed. The propagation delay of communications signals distributed in the distributed antenna systems is determined. If desired, the propagation delay(s) can be determined on a per remote antenna unit basis for the distributed antenna systems. The propagation delay(s) can provided by the distributed antenna systems to a network or other system to be taken into consideration for communications services or operations that are based on communications signal delay. As another non-limiting example, propagation delay can be determined and controlled for each remote antenna unit to uniquely distinguish the remote antenna units. In this manner, the location of a client device communicating with a remote antenna unit can be determined within the communication range of the remote antenna unit.