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A power scalable and high pulse swing UWB transmitter for wirelessly-powered RFID applications
KTH, School of Information and Communication Technology (ICT), Electronic Systems. KTH, School of Information and Communication Technology (ICT), Centres, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK.
KTH, School of Information and Communication Technology (ICT), Electronic Systems. KTH, School of Information and Communication Technology (ICT), Centres, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK.
KTH, School of Information and Communication Technology (ICT), Centres, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK.
KTH, School of Information and Communication Technology (ICT), Electronic Systems. KTH, School of Information and Communication Technology (ICT), Centres, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK.
Show others and affiliations
2012 (English)In: NORCHIP, 2012, IEEE , 2012, 6403099- p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents a 3-5 GHz, high output amplitude, carrier-less based Ultra Wideband (UWB) transmitter for wirelessly powered RFID application. The UWB transmitter consists of a baseband pulse generator, a driver amplifier and an output on-chip filter. The baseband pulse generator and the driver amplifier are designed as zero DC power consuming circuit, which enables scalable power with the pulse rate. IC pad and bonding wire parasitics are considered to be absorbed as part of output filtering network, realizing package co-design. The simulation result shows that the proposed transmitter radiates 2.34 pJ/pulse energy with 1.63 V pulse amplitude. The total energy consumption under 1.8 V power supply is 18 pJ/pulse, corresponding to 13% energy efficiency.

Place, publisher, year, edition, pages
IEEE , 2012. 6403099- p.
Keyword [en]
Energy efficiency, Package co-design, Transmitter, Ultra-wide band (UWB)
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-118515DOI: 10.1109/NORCHP.2012.6403099ISI: 000332453500004Scopus ID: 2-s2.0-84873534835ISBN: 978-146732221-8 (print)OAI: oai:DiVA.org:kth-118515DiVA: diva2:606631
Conference
NORCHIP 2012 Conference, 12 November 2012 through 13 November 2012, Copenhagen
Note

QC 20130220

Available from: 2013-02-20 Created: 2013-02-20 Last updated: 2016-04-12Bibliographically approved
In thesis
1. Radio and Sensor Interfaces for Energy-autonomous Wireless Sensing
Open this publication in new window or tab >>Radio and Sensor Interfaces for Energy-autonomous Wireless Sensing
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Along with rapid development of sensing and communication technology, Internet of Things (IoTs) has enabled a tremendous number of applications in health care, agriculture, and industry. As the fundamental element, the wireless sensing node, such as radio tags need to be operating under micro power level for energy autonomy. The evolution of electronics towards highly energy-efficient systems requires joint efforts in developing innovative architectures and circuit techniques. In this dissertation, we explore ultra-low power circuits and systems for micropower wireless sensing in the context of IoTs, with a special focus on radio interfaces and sensor interfaces. The system architecture of UHF/UWB asymmetric radio is introduced firstly. The active UWB radio is employed for the tag-to-reader communication while the conventional UHF radio is used to power up and inventory the tag. On the tag side, an ultra-low power, high pulse swing, and power scalable UWB transmitter is studied. On the reader side, an asymmetric UHF/UWB reader is designed. Secondly, to eliminate power-hungry frequency synthesis circuitry, an energy-efficient UWB transmitter with wireless clock harvesting is presented. The transmitter is powered by an UHF signal wirelessly and respond UWB pulses by locking-gating-amplifying the sub-harmonic of the UHF signal. 21% locking range can be achieved to prevent PVT variations with -15 dBm injected power. Finally, radio-sensing interface co-design is explored. Taking the advantage of RC readout circuit and UWB pulse generator, the sensing information is directly extracted and transmitted in the time domain, exploiting high time-domain resolution UWB pulses. It eliminates the need of ADC of the sensor interface, meanwhile, reduces the number of bits to be transmitted for energy saving. The measurement results show that the proposed system exhibits 7.7 bits ENOB with an average relative error of 0.42%.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2016. xviii, 93 p.
Keyword
Ultra-wideband, asymmetric UHF/UWB radio, clock harvesting, time-domain sensing, energy efficiency, Internet-of-things
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Information and Communication Technology
Identifiers
urn:nbn:se:kth:diva-184851 (URN)978-91-7595-855-2 (ISBN)
Public defence
2016-05-02, Sal/hall B, Electrum, KTH-ICT, Kista, Kista, 13:30 (English)
Opponent
Supervisors
Funder
VINNOVA
Note

QC 20160412

Available from: 2016-04-12 Created: 2016-04-05 Last updated: 2016-04-18Bibliographically approved

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