BROADBAND IMAGE-REJECT RECEIVER FOR MULTI-BAND MILLIMETER-WAVE 5G COMMUNICATION

摘要

According to one embodiment, a radio frequency (RF) receiver circuit includes a low noise amplifier, a polyphase filter, and an in-phase quadrature (IQ) mixer circuit coupled between the low noise amplifier and the polyphase filter. The IQ mixer circuit comprises: an IQ generator having a differential in-phase input port, a differential in-phase output port, and a differential quadrature output port; a first frequency mixer having a differential local oscillator (LO) input port, the differential LO input port of the first frequency mixer coupled to a differential in-phase output port of the IQ generator to drive the first frequency mixer; and a second frequency mixer having a differential LO port, the differential LO input port of the second frequency mixer coupled to the differential quadrature output port of the IQ generator to drive the second frequency mixer.