RF Upconversion Using Digital IQ Mixing
{"Image DocumentName": "RF Upconversion Using Digital IQ Mixing", "Image ImageDescription": "QDUC = QUADRATURE. DIGITAL. UPCONVERTER. IF TO 400MHz. (AD9957) RF. AD9857. AD9957. N\uf0b4 I. I. DSP. CHANNEL. FILTER. BPF. BPF. PA. DAC. NCO. 0\u00b0 \uf053 90\u00b0 Q. Q. N\uf0b4 LO. In this figure, the digital I/Q data is passed through a quadrature digital upconverter (QDUC) such as the AD9857 (200MHz) or AD9957 (400MHz) and then to a single on-chip DAC which provides an IF frequency output (up to 400MHz for the AD9957). The IF frequency then passes through a final stage of upconversion using traditional analog techniques. A DDS is used as the LO for the digital upconverter.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}