Electronic device including front end modules for wireless environment

An electronic device comprising:

• a first antenna, a second antenna, and a third antenna;
• a first power supply circuit;
• a second power supply circuit;
• a first front end module (FEM) including a power amplifier (PA) connected to the first antenna and configured to operate based on a voltage from the first power supply circuit;
• a second FEM including a PA connected to the second antenna and configured to operate based on a voltage from the second power supply circuit;
• a third FEM including a PA connected to the third antenna and configured to operate based on the voltage from the first power supply circuit and the voltage from the second power supply circuit and obtain a transmit (Tx) power in a range higher than a range of Tx power obtained using each of the PA in the first FEM and the PA in the second FEM;
• at least one processor comprising processing circuitry;
• memory, storing instructions, comprising one or more storage mediums;
• and
• at least one switch,
• wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to:
• transmit, via the third antenna, a signal with a Tx power obtained using the PA in the third FEM operating based on the voltage from the first power supply circuit and the voltage from the second power supply circuit;
• and
• while the signal is transmitted via the third antenna, through the at least one switch, electrically disconnect the PA in the first FEM from the first power supply circuit and electrically disconnect the PA in the second FEM from the second power supply circuit.