Electronic device and method of controlling spurious emission

1 . An electronic device comprising:

a memory storing instructions; and

at least one processor electrically connected to the memory and configured to execute the instructions,

wherein, based on the instructions being executed by the at least one processor, the at least one processor causes the electronic device to control a plurality of operations, and

wherein the plurality of operations comprises:

setting a first time interval in which a feedback receiver operates in a spurious emission detection mode,

obtaining a feedback signal in a first frequency band via the feedback receiver based on a first resolution bandwidth in the first time interval,

determining whether a spurious emission is in the frequency band by analyzing the feedback signal, and

in response to determination that the spurious emission is in the frequency band, determining whether a spurious emission is in a second frequency band included in the first frequency band based on a second resolution bandwidth narrower than the first resolution bandwidth,

wherein the feedback signal corresponds to a radio frequency (RF) signal amplified by a power amplifier of the electronic device.

2 . The electronic device of claim 1 , wherein the plurality of operations further comprise initiating a process of setting the first time interval based on one or more of a temperature of the electronic device and a transmission power of the electronic device.

3 . The electronic device of claim 2 , wherein the initiating comprises initiating the process of setting the first time interval, based on a current transmission power of the electronic device satisfying a threshold value.

4 . The electronic device of claim 3 , wherein the threshold value is determined based on a maximum transmission power of the electronic device.

5 . The electronic device of claim 1 , wherein the setting of the first time interval comprises randomly arranging the first time interval and a second time interval,

wherein the second time interval comprises a time interval in which the feedback receiver operates in a different mode from the spurious emission detection mode.

6 . The electronic device of claim 5 , wherein, during the second time interval, the feedback receiver is configured to compensate for a transmission power of the electronic device.

7 . The electronic device of claim 1 , wherein the determining whether the spurious emission is in the frequency band comprises:

determining whether the spurious emission is in the first frequency band, which is an adjacent frequency band of a current transmission frequency of the electronic device based on the first resolution bandwidth.

8 . The electronic device of claim 1 , wherein the plurality of operations further comprises adjusting a bias current of the power amplifier based on the spurious emission.

9 . The electronic device of claim 8 , wherein the adjusting of the bias current comprises:

determining a bias current range of the power amplifier based on one or more of a transmission quality of the electronic device and a transmission power of the electronic device; and

adjusting the bias current of the power amplifier within the bias current range based on the spurious emission.

10 . A method of determining a spurious emission of an electronic device, the method comprising:

setting a first time interval in which a feedback receiver operates in a spurious emission detection mode; and

obtaining a feedback signal in a first frequency band via the feedback receiver based on a first resolution bandwidth in the first time interval,

determining whether a spurious emission is in the frequency band by analyzing the feedback signal, and

in response to determination that the spurious emission is in the frequency band, determining whether a spurious emission is in a second frequency band included in the first frequency band based on a second resolution bandwidth narrower than the first resolution bandwidth,

wherein the feedback signal corresponds to a radio frequency (RF) signal amplified by a power amplifier of the electronic device.

11 . The method of claim 10 , further comprising:

initiating a process of setting the first time interval based on one or more of a temperature of the electronic device and a transmission power of the electronic device.

12 . The method of claim 11 , wherein the initiating comprises initiating the process of setting the first time interval, based on a current transmission power of the electronic device satisfying a threshold value.

13 . The method of claim 12 , wherein the threshold value is determined based on a maximum transmission power of the electronic device.

14 . The method of claim 12 , wherein, during the second time interval, the feedback receiver is configured to compensate for a transmission power of the electronic device.

15 . The method of claim 10 , wherein the setting of the first time interval comprises randomly arranging the first time interval and a second time interval,

wherein the second time interval comprises a time interval in which the feedback receiver operates in a different mode from the spurious emission detection mode.

16 . The method of claim 10 , wherein the determining whether the spurious emission is in the frequency band comprises:

determining whether the spurious emission is in the first frequency band, which is an adjacent frequency band of a current transmission frequency of the electronic device based on the first resolution bandwidth.

17 . The method of claim 10 , further comprising:

adjusting a bias current of the power amplifier based on the spurious emission.

18 . The method of claim 17 , wherein the adjusting of the bias current comprises:

determining a bias current range of the power amplifier based on one or more of a transmission quality of the electronic device and a transmission power of the electronic device; and

adjusting the bias current of the power amplifier within the bias current range based on the spurious emission.