DEVICE FOR CONTROLLING PHASE AND METHOD FOR THE SAME

摘要

PURPOSE: A device for controlling a phase and a method for the same are provided to exactly control the phase of the multi bandwidth frequency in response to the set phase control value with utilizing a small amount of memory. CONSTITUTION: A device for controlling a phase includes a phase controller(40), a digital/analog converter(44) and an analog phase shifter(46). The phase controller(40) searches the digital phase control voltage at the memory in response to the frequency and phase control value to be controlled and calculates the digital phase control voltage in response to the frequency and phase control value by linear interpolation method. The digital/analog converter(44) converts the searched and calculated digital phase control voltage into analog phase voltage by the phase controller(40). And, the analog phase shifter(46) shifts the phase of the signal having the frequency in response to the analog phase control voltage converted by the digital/analog converter(44).