A 5.8 GHz 1.77mW AFSK-OFDM CMOS Backscatter Transmitter for Low Power Internet of Things Applications
United States: NASA Center for Aerospace Information (CASI), 2018
Online
report
This paper presents an AFSK-OFDM (amplitude frequency shift keying-orthogonal frequency division multiplexing) based backscatter transmitter for Internet-of-Things (IoT) applications. The transmitter uses an array of 4 low-power direct digital frequency synthesizers (DDFSs) and DACs to transmit data using both frequency and amplitude symbols on 4 different OFDM subcarriers. The backscatter modulator is demonstrated within a 5.8 GHz wireless link using an 8-symbol OFDM library at a range of 2.7m and shown to consume 1.77 mW when operated at a symbol rate of 4MS/s (corresponds to 12 Mb/s). The modulator chip occupies 0.45mm² of silicon area.
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A 5.8 GHz 1.77mW AFSK-OFDM CMOS Backscatter Transmitter for Low Power Internet of Things Applications
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Autor/in / Beteiligte Person: | Chang, M-C. Frank ; Virbila, G ; Kim, Y ; Tang, A |
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Veröffentlichung: | United States: NASA Center for Aerospace Information (CASI), 2018 |
Medientyp: | report |
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