Shih-Kai Kuo;Manideep Dunna;Hongyu Lu;Akshit Agarwal;Dinesh Bharadia;Patrick P. Mercier
{"title":"LTE-Powered BLE-to-WiFi Backscattering Chip Toward Single-Device Interrogation RFID-Like Systems","authors":"Shih-Kai Kuo;Manideep Dunna;Hongyu Lu;Akshit Agarwal;Dinesh Bharadia;Patrick P. Mercier","doi":"10.1109/LSSC.2023.3304305","DOIUrl":null,"url":null,"abstract":"This letter presents a backscattering chip that is powered via LTE signals and reflects an incident reverse-whitened Bluetooth low energy (BLE) tone-like advertisement packet into a reradiated single-side-band (SSB) 802.11 b WiFi packet at a configurable WiFi channel location, all toward enabling an RFID-like single-device interrogation system. The chip includes an RF energy harvester, a WiFi wake-up receiver, an intermediate frequency (IF) ring oscillator whose frequency is calibrated with a successive-approximation-register (SAR) frequency-lock-loop (FLL), and a QPSK SSB backscatter modulator. Implemented in 65-nm CMOS, the chip consumes 4.5-\n<inline-formula> <tex-math>$\\mu \\text{W}$ </tex-math></inline-formula>\n power in wake-up mode and 11 to \n<inline-formula> <tex-math>$45~\\mu \\text{W}$ </tex-math></inline-formula>\n power in backscatter mode, with on-chip ring oscillator frequencies ranging from 33 to 253 MHz in order to support eight different BLE-to-WiFi backscatter schemes. Wireless measurement showed that the chip can be charged to 1 V before backscattering within 1 s on a 1-\n<inline-formula> <tex-math>$\\mu \\text{F}$ </tex-math></inline-formula>\n off-chip storage capacitor up to a 50-cm distance.","PeriodicalId":13032,"journal":{"name":"IEEE Solid-State Circuits Letters","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Solid-State Circuits Letters","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10214533/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"COMPUTER SCIENCE, HARDWARE & ARCHITECTURE","Score":null,"Total":0}
引用次数: 0
Abstract
This letter presents a backscattering chip that is powered via LTE signals and reflects an incident reverse-whitened Bluetooth low energy (BLE) tone-like advertisement packet into a reradiated single-side-band (SSB) 802.11 b WiFi packet at a configurable WiFi channel location, all toward enabling an RFID-like single-device interrogation system. The chip includes an RF energy harvester, a WiFi wake-up receiver, an intermediate frequency (IF) ring oscillator whose frequency is calibrated with a successive-approximation-register (SAR) frequency-lock-loop (FLL), and a QPSK SSB backscatter modulator. Implemented in 65-nm CMOS, the chip consumes 4.5-
$\mu \text{W}$
power in wake-up mode and 11 to
$45~\mu \text{W}$
power in backscatter mode, with on-chip ring oscillator frequencies ranging from 33 to 253 MHz in order to support eight different BLE-to-WiFi backscatter schemes. Wireless measurement showed that the chip can be charged to 1 V before backscattering within 1 s on a 1-
$\mu \text{F}$
off-chip storage capacitor up to a 50-cm distance.