A low-power and flexible energy detection IR-UWB receiver for RFID and wireless sensor networks

Zhuo Zou, David Sarmiento Mendoza, Peng Wang, Qin Zhou, Jia Mao, Fredrik Jonsson, Hannu Tenhunen, Li Rong Zheng

Research output: Contribution to journalArticlepeer-review

72 Scopus citations


This paper presents an energy detection Impulse Radio Ultra-Wideband (IR-UWB) receiver for Radio Frequency Identification (RFID) and Wireless Sensor Networks (WSN) applications. An Application-Specific Integrated Circuit (ASIC) consisting of a 35 GHz analog front-end, a timing circuit and a high speed baseband controller is implemented in a 90 nm standard CMOS technology. A Field-Programmable Gate Array (FPGA) is employed as a reconfigurable back-end, enabling adaptive baseband algorithms and ranging estimations. The proposed architecture is featured by high flexibility that adopts a wide range of pulse rate (512 kHz33 MHz), processing gain (018 dB), correlation schemes, synchronization algorithms, and modulation schemes (PPM/OOK). The receiver prototype was fabricated and measured. The power consumption of the ASIC is 16.3 mW at 1 V power supply, which promises a minimal energy consumption of 0.5 nJ/bit. The whole link is evaluated together with a UWB RFID tag. Bit error rate (BER) measurement displays a sensitivity of -79 dBm at 10 Mb/s with 10 -3 BER achieved by the proposed receiver, corresponding to an operation distance over 10 meters under the FCC regulation.

Original languageEnglish
Article number5766792
Pages (from-to)1470-1482
Number of pages13
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Issue number7
StatePublished - 2011
Externally publishedYes


  • Energy detection
  • Internet-of-Things
  • low power receiver
  • sensitivity
  • ultra-wideband (UWB)


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