A tri-phase direct conversion receiver

A direct conversion receiver architecture that utilizes three channels separated in phase by 120°, instead of the traditional two channels in phase quadrature, is described. The disadvantages of using direct conversion receives, including the difficulty of obtaining the necessary accuracy of gain balance and phase quadrature between the in-phase and quadrature phase channels are discussed, and the theory behind the tri-phase direct conversion receiver is presented. Test data obtained from a breadboard receiver are presented