Disclosed is an electronic device including an antenna module including a first antenna element and a second antenna element, and a processor operatively connected to the antenna module. The processor may be configured to transmit a first signal through the first antenna element, to receive a second signal including a signal obtained as the first signal is reflected by a target object, through the second antenna element, to calculate a distance from the antenna module to the target object based on a phase of the second signal, and to reduce a power level of the antenna module when the distance to the target object is smaller than a reference distance. In addition, various embodiments as understood from the specification are also possible.

Embodiments relate to machines comprising a movable part, transceiver circuitry configured to transmit a radio signal towards the movable part and to receive a reflection of the radio signal from the movable part, evaluation circuitry configured to determine a position or a speed of the movable part based on at least the received radio signal. A distance between an antenna of the transceiver circuitry and the movable part is less than 5 cm.

The electronic device of the present invention may comprise: a first antenna and a second antenna; a communication circuit; and a processor electrically connected to the first antenna, the second antenna, and the communication circuit. The processor is configured to: control the communication circuit such that a first signal is output to the first antenna; acquire a second signal corresponding to the first signal reflected from the first antenna, and a third signal corresponding to the first signal output through the first antenna and received by the second antenna; identify a reflection coefficient at which the first signal is reflected from the first antenna, and a transmission coefficient at which the first signal is transmitted to the second antenna; and perform a designated function according to a value corresponding to a distance between the electronic device and an external object.

Aspects of this disclosure relate to a radio frequency module with a radio frequency coupler and a coupler switching circuit. The coupler switching circuit can provide an indication of radio frequency power generated by the radio frequency coupler to a first input/output port. The coupler switching circuit can also pass an indication of radio frequency power received at the first input/output port to a second input/output port, and pass an indication of radio frequency power received at the second input/output port to the first input/output port.

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.

An electronic device is disclosed and may comprise: an amplifier for amplifying a signal; a filter circuit for filtering the amplified signal; a coupler for delivering a feedback signal with respect to the filtered signal; an antenna for radiating the filtered signal to the outside; and a communication circuit for generating the signal, wherein communication circuit: generates a signal, using designated information; delivers the generated signal to the amplifier; acquires, from the coupler, a first feedback signal and a second feedback signal with respect to signals amplified by the amplifier; and determines whether there is an error in a signal transmitted to an external apparatus, on the basis of the designated information, magnitude information of the first feedback signal, and frequency information of the second feedback signal. In addition, various embodiments recognized through the specification are possible.

A dynamic dual-port passive intermodulation reference signal generator for calibrating an intermodulation testing device includes: a power allocation coupling network, a non-linear device located under a biasing condition, and a voltage modulation module. Extraction of a carrier signal is performed through a power distribution coupling network; the carrier signal as extracted excites a non-linear device to generate an intermodulation signal; this part of signal, together with the excitation signal, is coupled back to two ports of the generator by the same power distribution coupling network, thereby forming reflected and transmitted reference intermodulation levels as reference sources for calibrating the intermodulation testing apparatus. The voltage modulation generating module generates a voltage wave of a certain value, implementing modulation of the intermodulation signal; through the modulated intermodulation signal, the intermodulation testing region power level and intermodulation transient response feature within a nominal range are calibrated for the intermodulation testing device.

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.

Various embodiments of the present invention relate to an electronic device and a method for identifying an object adjacent to the electronic device and providing various functions on the basis of a distance to the object. To this end, the electronic device of the present invention may comprise: a first antenna and a second antenna; a communication circuit for communication using the first antenna and the second antenna; and a processor electrically connected to the first antenna, the second antenna, and the communication circuit, wherein the processor is configured to: control the communication circuit such that a first signal is output to the first antenna; acquire a second signal corresponding to the first signal reflected from the first antenna, and a third signal corresponding to the first signal output through the first antenna and received by the second antenna; identifying, based at least partially on the second signal and the third signal, a reflection coefficient at which the first signal is reflected from the first antenna, and a transmission coefficient at which the first signal is transmitted to the second antenna; and perform, based at least partially on the reflection coefficient and the transmission coefficient, a designated function according to a value corresponding to a distance between the electronic device and an external object. Other embodiments may also be possible.

A testing system and method, for testing wireless communication devices, may include an anechoic far field chamber with a dual-axis positioning system for rotating the device under test. The testing system may further include a measuring antenna and a number of link antennas distributed throughout the testing system. A number of receive (RX) and transmit (TX) testing configurations for 5G NRs, using the testing system, are described in detail.