Electronic device and method for connecting ground node to camera module

An electronic device according to various embodiments comprises: an antenna; a camera module; at least one capacitor; a switching circuit; and a controller operatively coupled to the antenna, the camera module, the at least one capacitor, and the switching circuit, wherein the controller, in a state where the at least one capacitor that is connected in parallel to a power supply node inputted to the camera module is connected to a first node by the switching circuit, identifies a wireless signal related to the antenna, and in response to an identification of the wireless signal, controls the switching circuit to thereby connect the at least one capacitor from the first node to a second node distinguished from the first node.