Figure 7From: Multistage Quadrature Sigma-Delta Modulators for Reconfigurable Multi-Band Analog-Digital Interface in Cognitive Radio DevicesDemanded interference rejection ratio with different QΣΔM setups as a function full-band signal power relative to the desired signal power. SNRPRE at the ADC input and SINRtarget for detection are assumed 13 and 10 dB, respectively, giving implementation margin of 3 dB.Back to article page