Abstract
This paper presents a fully-integrated wireless direct sampling receiver that covers from DC to 200MHz system bandwidth implemented with a single-channel SAR ADC in 14nm FinFET. To demonstrate the proposed architecture, frequency modulation (FM) among the applicable standard frequency bands is adopted as a prototype. The measured demodulated SNR is 73.9dB with -47dBm input power at 108MHz and the sensitivity level is -106dBm. The proposed direct sampling receiver shows a robust performance over a 30dB demodulated SNR even in the presence of the interference such as a strong adjacent channel and an in-band spur. Furthermore, the FM channel scan time is drastically reduced since the proposed receiver simultaneously samples all channels without adjusting analog building blocks.
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