Electronic device including coupler

An electronic device comprising:

• a transceiver configured to output a first transmission signal;
• a first radio frequency (RF) module configured to amplify the first transmission signal obtained from the transceiver to generate an amplified first transmission signal;
• a first antenna configured to transmit the amplified first transmission signal;
• and
• a coupler along a transmission path between the first RF module and the first antenna, and configured to output a first coupling signal corresponding to the first transmission signal, wherein the coupler is connected to a fixed ground,
• wherein the first RF module comprises at least one power amplifier configured to amplify the first transmission signal, and a switch configured to connect one of a plurality of input ports with an output port connected to the transceiver,
• wherein the plurality of input ports of the switch comprise at least one input port connected to the coupler and configured to receive the first coupling signal output by the coupler, and
• wherein the coupler is provided outside the first RF module to reduce noise due to coupler switching in the first RF module.