Abstract This letter proposes a method to reduce the loss of multi-stage RC polyphase filters (PPFs), which are capable of generating in-phase and quadrature (I/Q) output signals in a broadband… Click to show full abstract
Abstract This letter proposes a method to reduce the loss of multi-stage RC polyphase filters (PPFs), which are capable of generating in-phase and quadrature (I/Q) output signals in a broadband bandwidth. The proposed two-stage PPF operation was evaluated in the high-precision vector-sum phase shifter. The simulation results show that the replacement of the conventional PPF-I with the proposed PPF does not affect the phase shift performance of the phase shifter, while the overall loss will be reduced about 1.4 dB.
               
Click one of the above tabs to view related content.