A device, a method, and a non-transitory storage medium are described in which an antenna assembly detection service is provided. A device may include an oscillator circuit whose frequency of operation is determined by a resonant frequency of a tank circuit and reactance of a load associated with the antenna terminal configured to receive an external antenna. A controller may be configured to measure an output signal of the oscillator circuit when the oscillator circuit is connected to the antenna terminal, and determine whether or not the external antenna is connected to the antenna terminal based on the measurement and comparison data.

Antenna monitoring modules associated with antennas and test antennas communicating test signals, input blocking modules, and addressable mixed signal processors determining antenna performance. Distributed antenna systems including global transceivers, splitters or tappers, monitoring modules, antennas and test antennas, that monitor antenna presence and performance indications, and centrally report antenna status. Distributed antenna systems including a trunk, multiple coupled branch runs with corresponding antenna monitoring modules, antennas and switches, capable of selectively decoupling antennas. Distributed antenna systems with programmable attenuators for adjusting transmission levels for a trunk and its segments, branches, and corresponding antennas. Distributed antenna systems for over the air antenna transmission and reception testing using local or global signals. Distributed antenna systems with a system controller selectively depowering and repowering segments is thereof. Distributed antenna systems with switches coupled to an antenna monitoring module by multiple selectable routes. Distributed antenna systems with loop-based antenna configurations supplying power in multiple directions.

A compact antenna test range equipment of the invention includes a microwave darkroom including a plurality of walls connected to each other, a reflector disposed in the microwave darkroom and comprising a reflecting surface having a polygon shape comprising a plurality of edges and a plurality of corners, each of the corners is located between two of the edges, wherein each of the corners aiming at one of the walls, a feeding antenna disposed in the microwave darkroom and corresponding to any position of the reflecting surface, and a test turning table disposed in the microwave darkroom and configured to bear a testing piece which is disposed in a quiet zone and exited by a plane electromagnetic wave. The feeding antenna transmits electromagnetic waves to the reflecting surface so as to generate a plane electromagnetic waves or receive electromagnetic waves from the quiet zone.

A wireless device is disclosed that can support carrier aggregation uplink (“CAUL”) communication using a single wideband coupler. A single wideband coupler that can operate or support some or all of the communication bands of the wireless device can be used in conjunction with one or more diplexers and/or filters to measure the power of individual communication bands involved in the transmission process. Further, the use of a wideband coupler and switching network to measure the transmit power from the one or more transmit paths or main paths of a wireless device can reduce the size of a transceiver and reduce the insertion loss attributed to the power measurement components compared to systems that use separate measurement systems for each transmit path. The power measurement system may occur in a separate path in electrical connection with the wideband coupler, which may therefore be termed a coupler path.

A digital pre-distortion processing method and an electronic device are provided. The method is performed by an electronic device and includes: detecting a standing wave status of an antenna of the electronic device; obtaining a calibration result through digital pre-distortion calibration in a case that the standing wave status satisfies a preset working condition; and determining whether to enable a digital pre-distortion function according to the calibration result.

Systems, apparatuses, and methods are described for wireless communications. A base station may transmit indications of target received powers for a random access procedure and a beam failure recovery procedure. A wireless device may transmit a random access preamble and a beam failure recovery preamble using different transmission powers based on the indications of target received powers.

A method is provided for calibrating a test system, including first and second test instruments. The method includes connecting a first test port of the first test instrument to a second test port of the second test instrument; generating a first RF signal using a first RF source of the first test instrument while a second RF source of the second test instrument is turned off; measuring first phase of the first RF signal at the first test port using first incident and reflected signals; generating a second RF signal using a second RF source of the second test instrument while the first RF source; measuring second phase of the second RF signal at the first test port using the second incident signal and reflected signals; determining a phase difference between the first and second phases; and adjusting the first and/or second RF source to remove the determined phase difference.

Devices and methods to allow a source of noise generated by modulation with a signal inside a device to be easily measured. A measurement device according to an embodiment includes: a transmission unit that applies a first signal formed by a high frequency signal to an object to be measured; a reception unit that receives a second signal formed by a high frequency signal generated from the object to be measured; and a measurement unit that measures the second signal received by the reception unit. The reception unit receives the second signal while the transmission unit applies the first signal.

A network device obtains data associated with transmissions received at one or more receive antennas from multiple transmit antennas located at different locations. The network device solves, based on the data and using an antenna transmission model, for unknown variables associated with the one or more receive antennas or the multiple transmit antennas to produce solution results that include solved parameters corresponding to the unknown variables. The network device modifies antenna profiles associated with the one or more receive antennas, in an antenna profile database, based on the solution results. The network device uses the modified antenna profiles to estimate a location of one or more of the multiple transmit antennas.

Systems and methods for remote radio frequency device monitoring are provided. In one embodiment, an RF communication system comprises: an RF transceiver system; an RF device coupled to the RF transceiver system by a cable, wherein the RF transceiver system is configured transmit an RF signal to the RF device via the cable; a remote measurement transceiver in communication with a processor of the RF transceiver system; a remote measurement transponder coupled between the cable and the RF device; wherein the processor controls the remote measurement transceiver to transmit an interrogation signal to the remote measurement transponder; wherein the remote measurement transponder determines a first parameter of the at least one RF device based on the RF signal as detected at the RF device, and transmits a response signal to the remote measurement transceiver comprising measurement data; wherein the remote measurement transceiver outputs the measurement data to the processor.