Certain aspects of the present disclosure provide techniques for adaptively tuning a wireless data transmission system in an electronic device, including: generating a plurality of measurements of an element of the wireless data transmission system in the electronic device; generating a determined use case for the electronic device based on a use case determination model and the plurality of measurements; determining one or more antenna settings associated with the determined use case; tuning the wireless data transmission system based on the one or more antenna settings; and transmitting data via the wireless data transmission system using the one or more antenna settings.

A device for measuring a reflection coefficient of an antenna by using a radio frequency (RF) feedback signal provided by a coupler based on an RF transmission signal provided to the antenna includes a feedback circuit configured to generate a baseband feedback signal by down-converting and filtering the RF feedback signal, and a signal processing device configured to control the down-converting, based on a target frequency band, process a baseband transmission signal and the baseband feedback signal to have the target frequency band, and calculate a reflection coefficient of the antenna corresponding to the target frequency band. The RF transmission signal is generated from the baseband transmission signal.

Exemplary embodiments described herein include systems, methods, and nodes for selecting a donor for a relay wireless device. Candidate signal arcs of a predetermined angle for a relay wireless device that do not meet an interference criteria are determined. Signals levels are scanned for the relay wireless device for signals received from a plurality of donor access nodes, the scanning iterating over the determined candidate signal arcs that do not meet the interference criteria. Candidate donor access nodes with a received signal level at the relay wireless device that meets a signal level criteria for each candidate signal arc based on the scanning are determined. And a donor access node is selected for the relay wireless device based on the determined candidate donor access nodes.

A measurement system for testing a device under test is described that comprises at least one signal unit for processing a signal, at least two measurement antennas, at least two reflectors, a shielded space, and a testing position for the device under test. Each measurement antenna is orientated with respect to the testing position such that the testing position is located in at least one of a side lobe area and a back lobe area of the measurement antennas. The reflectors are located such that each reflector generates and/or collimates a planar wave at different angles with respect to the testing position. Further, a method for performing test measurements is described.

An example device includes antennas to receive wireless signals from a wireless transmitter and to output radio frequency signals based upon the wireless signals that are received, low noise amplifiers coupled to the antennas to amplify the radio frequency signals, and a receiver stage to generate, based upon the radio frequency signals, digital representations of the wireless signals that are received via the antennas and to determine a measure a wireless channel parameter from the digital representations of the wireless signals.

An antenna device includes: a first variable phase amplifier that outputs a first signal to a first transmission line without outputting a second signal to a second transmission line; a second variable phase amplifier that outputs a fourth signal to a fourth transmission line without outputting a third signal to a third transmission line; a phase comparator that acquires a first reflected signal that is obtained by reflecting the first signal by a first antenna element from the second transmission line, acquires a second reflected signal that is obtained by reflecting the fourth signal by a second antenna element from the third transmission line, and detects a phase difference between the first and the second antenna elements based on the first and the second reflected signals; and a phase amplitude controller that calibrates a phase between the first and the second antenna elements based on the detected phase difference.

Disclosed is a system for measuring free space properties of an antenna. The system includes an analyzer adapted to obtain from an antenna supported in the air by an aircraft, at least one property of the antenna, and to determine at least one property of the antenna. The system also includes a telemetry unit adapted to relay information from the analyzer to a ground station.

Methods that include detecting cables connected to telecommunications network equipment are provided herein. In particular, a method that includes detecting connections of respective cables to ports of telecommunications network equipment may be performed using image recognition. Moreover, in some embodiments, the method may include detecting, using image recognition, respective positions of the ports. Related systems are also provided.

A transceiver for distance measurements between the transceiver and an apparatus is provided. The transceiver has a transmitter configured to emit a first signal portion to be emitted at a first center frequency and a second signal portion to be emitted at a second center frequency so that the first signal portion to be emitted is radiated back from the apparatus to the transceiver as a first reflected signal portion and so that the second signal portion to be emitted is radiated back from the apparatus to the transceiver as a second reflected signal portion. In addition, the transceiver has a receiver configured to receive the first reflected signal portion radiated back from the apparatus to the transceiver and the second reflected signal portion radiated back from the apparatus to the transceiver. Furthermore, the transceiver has a measuring module configured to determine a distance between the transceiver and the apparatus.

Technologies directed to sharing an antenna and a frequency band between coexistence radios are described herein. In one device, semi-active front-end circuitry includes a directional coupler and a phase-shifter circuit coupled to two radios that use the same antenna and the same frequency band. The phase-shifter circuit and directional coupler create an isolation null at an isolated port of the directional coupler that cancels a copy of an incident wave of a transmit signal being applied at an input port of the directional coupler. The isolation null permits the second radio to receive a receive signal concurrently with the first radio transmitting the transmit signal.