METHODS AND DEVICES FOR SELECTIVELY AMPLIFYING MULTIPLE CARRIERS IN DIFFERENT FREQUENCY BANDS

Exemplary embodiments are disclosed of methods and devices (e.g., circuit, compensator, repeater, booster, signal amplifier device, etc.) for selectively amplifying multiple carriers in different frequency bands (e.g., 5G, 4G, etc.). In an exemplary embodiment, a circuit includes a detector configured for detecting carriers in different frequency bands, multiple signal paths respectively configured for amplifying multiple carriers in different frequency bands, and a control unit configured for controlling the detector and the multiple signal paths. The control unit is further configured to: select the carrier(s) to be compensated based on one or more first specified conditions and allow transmission of the selected carrier(s) along the corresponding signal path(s) for amplification; and lock the signal path(s) associated with the frequency band(s) of the unselected carrier(s) to prevent transmission of the unselected carrier(s) along the locked signal path(s) until one or more second specified conditions are satisfied.