Electronic device for obtaining reflection coefficient of antenna and operating method thereof

1 . An electronic device comprising:

a transceiver comprising an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC);

a coupler coupled to the transceiver through a feedback path;

at least one memory storing instructions; and

at least one communication processor configured to execute the instructions to:

provide a digital transmission signal to the transceiver,

receive a digital feedback signal from the transceiver, and

obtain a reflection coefficient based on the digital transmission signal and the digital feedback signal,

wherein the DAC is configured to convert the digital transmission signal into an analog signal, and

wherein the ADC is configured to convert a signal into a digital signal to obtain the digital feedback signal, based on sampling information controlled according to a resource block size of the digital transmission signal.

2 . The electronic device of claim 1 , wherein the digital transmission signal comprises a first transmission signal and a second transmission signal, and

wherein the digital feedback signal comprises a forward signal received by the at least one communication processor in response to provision of the first transmission signal, and a reverse signal received by the at least one communication processor in response to provision of the second transmission signal.

3 . The electronic device of claim 2 , wherein the reflection coefficient is determined based on a ratio between a forward voltage and a reverse voltage,

wherein the forward voltage is a correlation value between the first transmission signal and the forward signal, and

wherein the reverse voltage is a correlation value between the second transmission signal and the reverse signal.

4 . The electronic device of claim 1 , wherein the sampling information comprises at least one of a sampling rate and a sampling count.

5 . The electronic device of claim 1 , wherein the at least one communication processor is further configured to execute the instructions to:

control the sampling information based on a threshold value of the resource block size;

control the sampling information as first sampling information based on the resource block size exceeding the threshold value, and

control the sampling information as second sampling information based on the resource block size being less than or equal to the threshold value.

6 . The electronic device of claim 5 , wherein a sampling count of the second sampling information is greater than a sampling count of the first sampling information.

7 . The electronic device of claim 5 , wherein a sampling rate of the second sampling information is less than a sampling rate of the first sampling information.

8 . The electronic device of claim 1 , wherein the at least one communication processor is further configured to execute the instructions to determine whether the electronic device is gripped using the reflection coefficient.

9 . The electronic device of claim 1 ,

wherein the at least one communication processor is further configured to execute the instructions to display the reflection coefficient on a complex plane, and determine that the electronic device is gripped by a user based on the reflection coefficient being displayed outside a circle displayed on the complex plane, and

wherein the circle has, as a center, a reflection coefficient determined based on the electronic device being not gripped.

10 . The electronic device of claim 9 , wherein the circle has a center that differs depending on a frequency band, and has a radius that differs depending on the frequency band.

11 . The electronic device of claim 10 , wherein the radius is determined to be smaller as the frequency band increases.

12 . An electronic device comprising:

a transceiver comprising an analog-to-digital converter (ADC);

a coupler coupled to the transceiver through a feedback path;

at least one memory storing instructions; and

at least one communication processor configured to execute the instructions to:

control a sampling rate and a sampling count to convert an analog signal into a digital signal based on whether a resource block size of a first transmission signal and a second transmission signal transmitted through the transceiver exceeds a threshold value;

convert a forward signal and a reverse signal into digital signals through sampling with the controlled sampling rate and the controlled sampling count;

obtain a forward voltage based on the first transmission signal and the converted forward signal;

obtain a reverse voltage based on the second transmission signal and the converted reverse signal; and

identify a reflection coefficient of an antenna with respect to from an input of a tuner connected to the coupler based on a ratio between the forward voltage and the reverse voltage,

wherein the forward signal corresponds to the first transmission signal received by the transceiver through the feedback path from the coupler, and

wherein the reverse signal corresponds to the second transmission signal received by the transceiver through the feedback path from the coupler.

13 . An operating method of an electronic device, the operating method comprising:

providing a digital transmission signal to a transceiver;

receiving a digital feedback signal from the transceiver; and

obtaining a reflection coefficient based on the digital transmission signal and the digital feedback signal,

wherein the digital transmission signal is converted into an analog signal by a digital-to-analog converter (DAC) of the transceiver, and

wherein the digital feedback signal is converted into a digital signal by an analog-to-digital converter (ADC) of the transceiver based on sampling information controlled according to a resource block size of the digital transmission signal.

14 . The operating method of claim 13 , wherein the digital transmission signal comprises a first transmission signal and a second transmission signal, and

wherein the digital feedback signal comprises a forward signal received in response to provision of the first transmission signal, and a reverse signal received in response to provision of the second transmission signal.

15 . The operating method of claim 13 , wherein the sampling information comprises at least one of a sampling rate and a sampling count.

16 . The operating method of claim 13 , wherein the sampling information is controlled as first sampling information based on the resource block size exceeding a threshold value, and is controlled as second sampling information based on the resource block size being less than or equal to the threshold value.

17 . The operating method of claim 13 , further comprising:

determining whether the electronic device is gripped based on the reflection coefficient.

18 . The operating method of claim 17 , wherein the determining whether the electronic device is gripped based on the reflection coefficient comprises displaying the reflection coefficient on a complex plane, and determining that the electronic device is gripped by a user based on the reflection coefficient being displayed outside a circle displayed on the complex plane, and

wherein the circle has, as a center, a reflection coefficient determined based on the electronic device being not gripped.

19 . The operating method of claim 18 , wherein the circle has a different center depending on a frequency band, and has a different radius depending on the frequency band.

20 . A non-transitory computer-readable storage medium storing a program that, when executed by at least one processor, causes the electronic device to perform the operating method of claim 13 .