CAO Peng, FEI Yuan-chun. The Research on the Effect of the RF Analog Front End to the Large Dynamic Range and Broadband Digital Intermediate Frequency Receivers[J]. Acta Electronica Sinica, 2007, 35(12): 2312-2314.
CAO Peng, FEI Yuan-chun. The Research on the Effect of the RF Analog Front End to the Large Dynamic Range and Broadband Digital Intermediate Frequency Receivers[J]. Acta Electronica Sinica, 2007, 35(12): 2312-2314.DOI:
RF Analog Front-end (RFAF) is one technique-bottleneck to realize the large dynamic range and broadband Digital Intermediate Frequency Receivers (DIFR)
and could restrict the bandwidth
dynamic range and some other key parameters of the DIFR.It has been researched that the constraint condition for the broadband and large dynamic range of the DIFR.Based on the ADC parameters
the correlation expression for the following characters is given:the noise figure
bandwidth
"processing gain" of the under-sampling
and the sensitivity of the DIFR.The relational expression for the gain and noise figure of the RFAF and the dynamic range of the DIFR is also performed.It is reduced and simulated that the relationship between the gain of the RFAF
the signal-to-noise ratio of the ADC and the instantaneous dynamic range
and the step and adjust-range of the RF-DAGC and the extended dynamic range of DIFR.It is discussed the optimization design of RFAF