期刊
IEEE JOURNAL OF SOLID-STATE CIRCUITS
卷 49, 期 2, 页码 335-346出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2013.2285371
关键词
Batteryless; crystal-less; energy harvesting; 90-nm CMOS; RF-powered sensor network; radio frequency identification (RFID); RF transceiver
资金
- European FP7 project ENIAC_END [ENIAC 2009-1]
This paper presents a 90-nm CMOS batteryless transceiver for RF-powered wireless sensor networks. The circuit is made up of a RF energy harvesting module that is implemented through a multi-stage rectifier, a power management unit, and a PLL-based RF front-end that enables TX carrier synthesis by exploiting the RF input signal as a reference frequency. This avoids the use of a local crystal oscillator, thus implementing a highly integrated low-cost wireless transceiver. An active narrowband transmission scheme is adopted with the aim of overcoming the reader self-jamming that limits the operating range of backscattering- based RF-powered devices. The circuit supports a 915-MHz FSK downlink and a 2.45-GHz OOK uplink, while achieving a data rate up to 5 Mbps. It operates with an RF input power as low as -17.1 dBm.
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