A method for improving the accuracy of measuring a distance to an object using a wireless communication signal and an electronic device therefor the same are provided. The method includes transmitting a wireless communication signal to an external object by controlling a wireless communication module, receiving a signal returned based on the transmitted wireless communication signal being reflected from the external object by controlling the wireless communication module, acquiring a first distance to the external object based on a transmission time point of the transmitted signal and a reception time point of the received signal, acquiring a second distance to the external object based on phases of the transmitted signal and the received signal by controlling the phase matching module, and estimating a distance to the external object based on the first distance and the second distance.

A radar device includes a transmit antenna radiating a modulation signal and a receive antenna receiving reflection waves from the modulation signal. The radar device also includes a mixer mixing the modulation signal and the received signal to output a beat signal, a calculation circuit judging presence or absence of an abnormality by using the beat signal, and a memory storing reference data and a threshold. The reference data indicates a phase component of a set frequency signal from a beat signal without necessarily any abnormality. The set frequency signal is generated from the modulation signal reflected on a surface of a housing located at a set distance from the radar device. The calculation circuit extracts a phase component from the beat signal and supplies information indicating the presence of an abnormality if the difference between the extracted phase component and the reference data is greater than the threshold.

A radar device includes a transmit antenna radiating a modulation signal and a receive antenna receiving reflection waves from the modulation signal. The radar device also includes a mixer mixing the modulation signal and the received signal to output a beat signal, a calculation circuit judging presence or absence of an abnormality by using the beat signal, and a memory storing reference data and a threshold. The reference data indicates a phase component of a set frequency signal from a beat signal without necessarily any abnormality. The set frequency signal is generated from the modulation signal reflected on a surface of a housing located at a set distance from the radar device. The calculation circuit extracts a phase component from the beat signal and supplies information indicating the presence of an abnormality if the difference between the extracted phase component and the reference data is greater than the threshold.

A signal generator includes a first phase-locked loop (PLL) configured to receive a first reference signal having a first reference frequency and generate a ramping signal based on the first reference signal, where the ramping signal is between a minimum frequency and a maximum frequency of a radar frequency band; a system clock configured to generate a second reference signal having a common system reference frequency; and a second PLL configured to receive the second reference signal from the system clock, generate the first reference signal based on the second reference signal, and provide the first reference signal to the first PLL.

A signal generator includes a first phase-locked loop (PLL) configured to receive a first reference signal having a first reference frequency and generate a ramping signal based on the first reference signal, where the ramping signal is between a minimum frequency and a maximum frequency of a radar frequency band; a system clock configured to generate a second reference signal having a common system reference frequency; and a second PLL configured to receive the second reference signal from the system clock, generate the first reference signal based on the second reference signal, and provide the first reference signal to the first PLL.

The radar device is provided with a distance calculation unit that calculates a distance correspondence value corresponding to the distance to a target from a digital signal converted by a beat signal detection unit, and calculates the distance to the target from the distance correspondence value.

A radar device utilizing frequency modulation of a frequency modulated continuous wave type, and includes a voltage-controlled oscillator generating a high frequency signal frequency-modulated based on a triangular wave voltage signal, a transmission antenna emitting the high frequency signal into the air, a receiving antenna receiving, as a reception signal, a reflected wave from a target object, of the high frequency signal, a mixer generating a beat signal having a frequency equal to a frequency difference between the reception signal and the high frequency signal, and a microcomputer calculating distance from the target object and relative velocity with respect to the target object, using the beat signal, and causing the initial voltage of the triangular wave voltage signal corresponding to second modulation scheme to be equal to that corresponding to first modulation scheme at a time of switching from the first modulation scheme to the second modulation scheme.

Positioning reference signals are transmitted in a downlink direction from base stations (200) of a wireless communication network to a wireless communication device (100) or in an uplink direction from the wireless communication device (100) to base stations (200) of the wireless communication network. According to a frequency hop pattern, a radio interface of the wireless communication device is switched between multiple different frequency ranges. In this way, the wireless communication device (100) can receive the downlink positioning reference signals on multiple different frequencies defined by the frequency hop pattern or send the uplink positioning reference signals on multiple different frequencies defined by the frequency hop pattern.

Positioning reference signals are transmitted in a downlink direction from base stations (200) of a wireless communication network to a wireless communication device (100) or in an uplink direction from the wireless communication device (100) to base stations (200) of the wireless communication network. According to a frequency hop pattern, a radio interface of the wireless communication device is switched between multiple different frequency ranges. In this way, the wireless communication device (100) can receive the downlink positioning reference signals on multiple different frequencies defined by the frequency hop pattern or send the uplink positioning reference signals on multiple different frequencies defined by the frequency hop pattern.

Systems, methods, and circuitries are provided for generating a frequency hopping radar signal. In one example, a radar signal modulator include a frequency offset generator, a phase locked loop, and a bandwidth compensation circuitry. The frequency offset generator is configured to generate a sequence of frequency offsets. The bandwidth compensation circuitry is configured to combine a modulation signal and the sequence of frequency offsets to generate a bandwidth compensated signal. The PLL is configured to receive the bandwidth compensated signal and generate a frequency hopping radar signal based on the bandwidth compensated signal.