An electronic device may include at least one communication processor, at least one radio frequency integrated circuit (RFIC) configured to provide a radio frequency (RF) signal based on a signal from the at least one communication processor, and a first RF circuit and a second RF circuit configured to process and provide the RF signal. The at least one communication processor may be configured to control at least part of the electronic device to allow the first RF circuit to process at least one first RF signal provided from the RFIC, in an over-temperature state, identify that a sum of times when the first RF circuit processes the at least one first RF signal is at least the value of a designated period, and based on the sum of the times when the first RF circuit processes the at least one first RF signal being at least the value of the designated period, stop use of the first RF circuit and control at least part of the electronic device to allow the second RF circuit to process at least one second RF signal provided from the RFIC. Other various embodiments are possible as well.

An electronic device may include at least one communication processor, at least one radio frequency integrated circuit (RFIC) configured to provide a radio frequency (RF) signal based on a signal from the at least one communication processor, and a first RF circuit and a second RF circuit configured to process and provide the RF signal. The at least one communication processor may be configured to control at least part of the electronic device to allow the first RF circuit to process at least one first RF signal provided from the RFIC, in an over-temperature state, identify that a sum of times when the first RF circuit processes the at least one first RF signal is at least the value of a designated period, and based on the sum of the times when the first RF circuit processes the at least one first RF signal being at least the value of the designated period, stop use of the first RF circuit and control at least part of the electronic device to allow the second RF circuit to process at least one second RF signal provided from the RFIC. Other various embodiments are possible as well.

Systems and methods for calibrating VNA modules which dynamically assigns match utilization to improve overall calibration accuracy and reduce problems from a non-optimal set of calibration components and simplify user input requirements during calibration.

Methods and devices useful in performing precise indoor localization and tracking are provided. By way of example, a method includes locating and tracking, via a first wireless electronic device, a plurality of other wireless electronic devices within an indoor environment. Location ambiguity mitigation is performed using characteristics of signals received by a reference node used to generate a radio frequency map of electronic devices.

Methods and devices useful in performing precise indoor localization and tracking are provided. By way of example, a method includes locating and tracking, via a first wireless electronic device, a plurality of other wireless electronic devices within an indoor environment. Location ambiguity mitigation is performed using characteristics of signals received by a reference node used to generate a radio frequency map of electronic devices.

The present disclosure relates to manufacture of an active array antenna from a combination of modular sub-arrays, nominally of equal size; each sub-array being associated with a separate receiver and/or transmitter. A solution to calibrating a modular array is the inclusion of a calibration manifold having multiple 1st ports that connect to respective sub-arrays between their passive network and their respective receiver and/or transmitter. Each of the first ports communicate with a common second port through which a signal can be introduced in order to be received at each element of each sub array, or through which a signal from any element of any sub-array can be received. This allows any element of the sub array to be calibrated at any time including during operation.

The present disclosure relates to manufacture of an active array antenna from a combination of modular sub-arrays, nominally of equal size; each sub-array being associated with a separate receiver and/or transmitter. A solution to calibrating a modular array is the inclusion of a calibration manifold having multiple 1st ports that connect to respective sub-arrays between their passive network and their respective receiver and/or transmitter. Each of the first ports communicate with a common second port through which a signal can be introduced in order to be received at each element of each sub array, or through which a signal from any element of any sub-array can be received. This allows any element of the sub array to be calibrated at any time including during operation.

Disclosed herein are related to systems and methods for correcting non-linearity due to duty cycle error. In one aspect, a system includes a mixer configured to up-convert transmission (Tx) data, a coefficient calibrator configured to select a target value of a coefficient based on a measurement of an interference signal due to non-linearity of the mixer, and an interference canceller coupled to the coefficient calibrator and the mixer. In some embodiments, the interference canceller is configured to generate compensated Tx data based on the Tx data and the selected target value of the coefficient and provide the compensated Tx data to the mixer. In some embodiments, the compensated Tx data corrects for the non-linearity of the mixer.

A radio unit that is configured to perform calibration of its antennas for beamforming is disclosed. The radio unit may comprise a combiner. The combiner may be configured to cause the antennas to transmit calibration signals. The combiner may cause the calibration signals to rotate to different phases. The different phases may cause non-coherent combining of noise of the calibration signals when the calibration signals are combined. The combiner may combine the rotated calibration signals and the noise may be cancelled by the radio unit. The combiner may calibrate the antennas based on the combined calibration signals.

A system includes a local oscillator (LO) signal generation circuit, a receiver (RX) circuit, and a calibration circuit. The LO signal generation circuit generates an LO signal according to a reference clock, and includes an active oscillator that generates the reference clock. The active oscillator includes at least one active component. The RX circuit generates a processed RX signal by processing an RX input signal according to the LO signal. The calibration circuit checks a signal characteristic of the processed RX signal by detecting if a calibration tone exists within a receiver bandwidth, set a frequency calibration control output in response to the calibration tone being not found in the receiver bandwidth, and output the frequency calibration control output to the LO signal generation circuit. The LO signal generation circuit adjusts an LO frequency of the LO signal in response to the frequency calibration control output.