Title :
915MHz ultra low power receiver using sub-Vt active rectifiers
Author :
Roberts, Nathan E. ; Wentzloff, David D.
Author_Institution :
Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
A 98nW receiver with a 23nW active rectifier RF front-end biased in deep subthreshold near the saturation/linear boundary is presented. An on-chip voltage reference and 28nW hysteretic comparator are also designed using subthreshold techniques. The receiver can demodulate an OOK signal at 100kbps with a sensitivity of -41dBm and all processing for process and mismatch is handled on-chip [1]. The ultra-low power receiver is used for wireless sensor node applications, specifically for nodes that are to be worn on the body.
Keywords :
amplitude shift keying; comparators (circuits); low-power electronics; radio receivers; rectifiers; wireless sensor networks; OOK signal; active rectifier RF front-end; frequency 915 MHz; hysteretic comparator; linear boundary; on-chip voltage reference; power 23 nW; power 28 nW; saturation boundary; sub-Vt active rectifier; subthreshold technique; ultra-low power receiver; wireless sensor node application; Low-power electronics; Radio frequency; Receivers; Rectifiers; Sensitivity; System-on-a-chip; Wireless sensor networks;
Conference_Titel :
Subthreshold Microelectronics Conference (SubVT), 2012 IEEE
Conference_Location :
Waltham, MA
Print_ISBN :
978-1-4673-1586-9
DOI :
10.1109/SubVT.2012.6404317
