Electronic device including a temperature sensor connected to a power amplifier and a controller to control an input power based on a temperature of the power amplifier detected by the temperature sensor

An electronic device, comprising:

• a modem configured to process a baseband signal;
• an intermediate frequency (IF) transceiver configured to convert the baseband signal provided from the modem into an IF band signal;
• and
• a radio frequency (RF) transceiver configured to convert the IF band signal provided from the IF transceiver into an RF band signal,
• wherein the RF transceiver includes a power amplifier configured to amplify the RF band signal, and a power detector to detect an output power of the amplified RF band signal,
• wherein the modem includes a controller configured to control an input power inputted to the RF transceiver based on the output power of the RF band signal detected by the power detector,
• wherein a plurality of paths is provided between the modem and the IF transceiver, and
• wherein the controller calculates a difference between a target power and the output power of the RF band signal detected by the power detector, and selects one of the paths based on the difference between the target power and the output power.

An electronic device, comprising:

• a modem configured to process a baseband signal;
• an intermediate frequency (IF) transceiver configured to up-convert the baseband signal outputted from the modem and output an IF band signal;
• and
• a radio frequency (RF) transceiver configured to up-convert the IF band signal outputted from the IF transceiver and output an RF band signal,
• wherein the RF transceiver includes a power amplifier configured to amplify the RF band signal, a temperature sensor unit connected to the power amplifier to detect a temperature of the power amplifier, and a power detector connected to the power amplifier to detect an output power of the amplified RF band signal, and
• wherein the modem includes a controller configured to control an input power inputted to the RF transceiver based on the temperature of the power amplifier detected by the temperature sensor unit, or the output power detected by the power detector, and a memory which stores a look-up table including temperatures of the power amplifier and gain drops of the RF transceiver respectively corresponding to the temperatures of the power amplifier,
• wherein a first path is provided between the modem and the IF transceiver,
• wherein a second path is provided between the IF transceiver and the RF transceiver, and
• wherein the controller selects the first path or the second path based on the output power detected by the power detector.