Digital Phase Shifting Method using Software Defined Radio for Element level Digital Phased Arrays Architecture and Digital Phase Shifter

摘要

A digital phase shifting method and a digital phase shifter using software defined radios for an element level digital phased array architecture are disclosed. A digital phase shifting method according to an embodiment of the present invention includes converting an input signal into a first digital signal using software defined radio (SDR); Mixing the first digital signal with an up-converting digital signal having a first frequency and a first phase to generate a second digital signal having a changed frequency and phase of the first digital signal; And mixing the second digital signal with a down-converting digital signal having a second frequency to generate a third digital signal shifted only by the first phase of the first digital signal.