SHI Weiwei, PENG Panfeng, CHOY Chiu-Sing. A 90nm Passive RFID Tag's Custom Baseband Processor for Subthreshold Operation Below 0.3V[J]. Chinese Journal of Electronics, 2017, 26(4): 720-724. doi: 10.1049/cje.2017.04.006
Citation: SHI Weiwei, PENG Panfeng, CHOY Chiu-Sing. A 90nm Passive RFID Tag's Custom Baseband Processor for Subthreshold Operation Below 0.3V[J]. Chinese Journal of Electronics, 2017, 26(4): 720-724. doi: 10.1049/cje.2017.04.006

A 90nm Passive RFID Tag's Custom Baseband Processor for Subthreshold Operation Below 0.3V

doi: 10.1049/cje.2017.04.006
Funds:  This work is supported by Natural Science Foundation of Guangdong Province, China (No.2015A030310498), the basic research foundation of Shenzhen Commission of Science, Technology & Innovation, China (No.JCYJ20140418091413534), the Youth Scholar Innovation Fund of Guangdong Institutes (No.2015KQNCX140), and the Startup Project for Shenzhen High-level Oversea Experts/Scholars (No.827-000110).
  • Received Date: 2016-05-23
  • Rev Recd Date: 2017-01-06
  • Publish Date: 2017-07-10
  • In the design of passive Radio frequency (RF) tags' baseband processor, subthreshold timing and wide-range-Process, voltage and temperature (PVT) variation problems are the bottlenecks to extend the tag's working range. A sophisticated processor is presented based on the EPC and ISO protocol. Power-aware ideas are applied to the entire processor, including data link portions. Innovatively, a novel custom ratioed logic style is adopted in critical logic paths to fundamentally speed up the circuit operations at ultra-low-voltage. The proposed baseband processor was fabricated in 90nm CMOS, another baseband processor design by regular standard-cell-based design flow was also fabricated for comparison. In measurement the proposed design indicates good robustness in wide-range supply and frequency variation and much more competent for subthreshold operation. It can operate at minimum 0.28V supply with power consumption of 129nW.
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