Apparatus and method for measuring strength of signal

An electronic device in a wireless communication system, the electronic device comprising:

• a power amplifier comprising a transmission line, a first power amplifier, and a second power amplifier;
• an antenna;
• a first connection member connecting the first power amplifier and a first end of the transmission line;
• a second connection member connecting a second end of the transmission line and the antenna, wherein the second power amplifier is electrically connected to the second connection member;
• at least one sensor;
• at least one processor electrically coupled to the at least one sensor;
• and
• memory storing instructions,
• wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to:
• obtain, by the at least one sensor, a first voltage of a first signal outputted by the first power amplifier at a first point of the first connection member;
• obtain, by the at least one sensor, a second voltage of a second signal outputted by the power amplifier at a second point of the second connection member, and
• calculate a power of the second signal, based on the first voltage and the second voltage obtained by the at least one sensor, and
• wherein a length of the transmission line is based on a wavelength of the second signal.

An electronic device in a wireless communication system, the electronic device comprising:

• a plurality of radio frequency (RF) chains;
• a plurality of antennas corresponding to the plurality of RF chains;
• at least one sensor;
• memory storing instructions;
• and
• at least one processor electrically coupled to the at least one sensor,
• wherein at least one RF chain of the plurality of RF chains includes:
• a power amplifier comprising a first power amplifier, a second power amplifier, and a transmission line, and
• a first connection member connecting the first power amplifier and a first end of the transmission line;
• a second connection member connecting a second end of the transmission line and an antenna of the plurality of antennas, wherein the second power amplifier is electrically connected to the second connection member,
• wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to:
• obtain, by the at least one sensor, a first voltage of a first signal outputted by the first power amplifier at a first point of the first connection member;
• obtain, by the at least one sensor, a second voltage of a second signal outputted by the power amplifier at a second point of the second connection member, and
• calculate a power of the second signal, based on the first voltage and the second voltage obtained by the at least one sensor, and
• wherein a length of the transmission line is based on a wavelength of the second signal.