Abstract
In this paper, we investigate an impact of voltage supply scaling on power consumption and performance of a new class of wireless receivers (RX) for Internet-of-Things (IoT) applications: a discrete-time (DT) superheterodyne architecture realized in nanoscale CMOS using inverter-based gm and switched capacitors. The power supply is partitioned into three separate domains: RF, intermediate frequency (IF) processing, and clocking, which allows them to be independently regulated to assess their respective impact. The DT-RX maintains its functionality, albeit with some acceptable loss of performance, when the core supplies are varied by as much as an octave, i.e., from the nominal 1.1 V down to 0.55V. The DT-RX IC is then connected to a switched-capacitor based voltage doubler array on a companion IC die such that the DT-RX can be powered at the octave range of 0.275-0.55 V from an energy harvester. The sensitivity at the doubler's 0.275/0.55 V input is -85/-95 dBm while consuming 1.0/2.4mW. Both ICs are implemented in TSMC 28-nm LP CMOS.
Original language | English |
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Title of host publication | 2018 IEEE/MTT-S International Microwave Symposium - IMS |
Subtitle of host publication | Proceedings |
Place of Publication | Danvers |
Publisher | IEEE |
Pages | 1211-1214 |
Number of pages | 4 |
ISBN (Electronic) | 978-1-5386-5067-7 |
ISBN (Print) | 978-1-5386-5068-4 |
DOIs | |
Publication status | Published - 17 Aug 2018 |
Event | 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 - Philadelphia, United States Duration: 10 Jun 2018 → 15 Jun 2018 |
Conference
Conference | 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 |
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Country/Territory | United States |
City | Philadelphia |
Period | 10/06/18 → 15/06/18 |
Keywords
- Bluetoth LE
- Discrete-time receiver
- Internet-of-Things
- ultra-low voltage
- ultralow power
- voltage doubler