Combined linear power amplifying device and method

A method of controlling a combined linear power amplifying device which has a power divider module for dividing power of an RF signal, a power combiner module for combining power thereof, and linear power amplifiers connected with RF switches respectively connected to output terminals of said power divider module and input terminals of said power combiner module, comprising the steps of:

• self diagnosing linear amplifying operation, turning off said corresponding RF switch upon sensing an abnormal state, if said abnormal state is not sensed then evenly dividing the power of said RF signal to an input terminal of a normal linear power amplifier by opening said RF switch upon said inputted RF signal being power-divided by means of said linear power amplifiers, and if said abnormal state is sensed then reflecting back to an input node a divided RF signal corresponding to said corresponding RF switch.

A method of controlling a combined linear power amplifying device which has a power divider module for dividing power of an RF signal, a power combiner module for combining power thereof, and linear power amplifiers connected with RF switches respectively connected to output terminals of said power divider module and input terminals of said power combiner module, comprising the steps of:

• sequentially checking an internal operation state of said linear power amplifiers by a set period, displaying a detection signal that abnormal state is generated in said checking step, accumulatively storing time when the abnormal state is generated therein, closing said RF switch upon said time when the abnormal state is generated and has lasted over the set time, and terminating RF input/output paths of said linear power amplifiers.