Electronic device having slidable structure

1. A portable electronic device comprising:

a housing;

a sliding plate configured to move with respect to the housing between a slide-in state and a slide-out state;

a driving circuit configured to move the sliding plate;

a first antenna;

a wireless communication circuit connected to the first antenna;

a first grip sensor;

a processor connected to the wireless communication circuit, the driving circuit, and the first grip sensor; and

memory connected to the processor,

wherein the memory store one or more programs including instructions which, when executed by the processor, cause the portable electronic device to:

while the sliding plate is in the slide-in state, correct a first capacitance value measured through the first grip sensor using a first offset value corresponding to the slide-in state,

in response to a user input, control the driving circuit so that a state of the sliding plate changes from the slide-in state to the slide-out state different from the slide-in state according to a degree of movement,

based on the sliding plate changing from the slide-in state to the slide-out state, correct the first capacitance value measured through the first grip sensor to be a correction value by using a second offset value corresponding to the slide-out state and different from the first offset value corresponding to the slide-in state, and

in case the correction value is equal to or greater than a threshold value corresponding to the slide-out state, control to lower a power of a radio frequency (RF) signal output from the wireless communication circuit to the first antenna by using a power back-off value corresponding to the slide-out state.

2. The portable electronic device of claim 1 , wherein the one or more programs further include instructions which, when executed by the processor, cause the portable electronic device to:

reconfigure an offset value used when the first capacitance value measured through the first grip sensor is corrected from an (1-1)-th offset value corresponding to the first grip sensor and the slide-in state to an (1-2)-th offset value corresponding to the first grip sensor and the slide-out state,

reconfigure a threshold value that is compared with a value used to determine whether to perform a power back-off operation from an (1-1)-th threshold value corresponding to the first grip sensor and the slide-in state to an (1-2)-th threshold value corresponding to the first grip sensor and the slide-out state, and

reconfigure the power back-off value used when the power back-off operation is performed from a first power back-off value corresponding to the slide-in state to a second power back-off value corresponding to the slide-out state.

3. The portable electronic device of claim 2 , wherein the one or more programs further include instructions which, when executed by the processor, cause the portable electronic device to:

correct the first capacitance value measured through the first grip sensor to be a first correction value by using the (1-2)-th offset value, and

perform the power back-off operation using the second power back-off value when the first correction value is equal to or greater than the (1-2)-th threshold value.

4. The portable electronic device of claim 2 , further comprising:

a second grip sensor,

wherein the one or more programs further include instructions which, when executed by the processor, cause the portable electronic device to:

reconfigure an offset value used to:

correct a second capacitance value measured through the second grip sensor from a (2-1)-th offset value corresponding to the second grip sensor and the slide-in state to a (2-2)-th offset value corresponding to the second grip sensor and the slide-out state; and

reconfigure a threshold value that is compared with a correction value calculated using the second capacitance value measured through the second grip sensor from a (2-1)-th threshold value corresponding to the second grip sensor and the slide-in state to a (2-2)-th threshold value corresponding to the second grip sensor and the slide-out state, and

wherein the one or more programs further include instructions which, when executed by the processor, cause the portable electronic device to:

correct the second capacitance value measured through the second grip sensor to be a second correction value by using the (2-2)-th offset value when a first correction value is less than the (1-2)-th threshold value; and

perform the power back-off operation by using the second power back-off value when the second correction value is equal to or greater than the (2-2)-th threshold value.

5. The portable electronic device of claim 1 , wherein the second offset value is determined by subtracting a designated value from the first offset value.

6. The portable electronic device of claim 1 , wherein the one or more programs further include instructions which, when executed by the processor, cause the portable electronic device to:

based on the sliding plate being in the slide-in state, configure to use the first offset value when correcting the first capacitance value measured through the first grip sensor, and

based on the sliding plate changing from the slide-in state to the slide-out state, configure to use the second offset value when correcting the first capacitance value measured through the first grip sensor.