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A 90nm CMOS UHF/UWB asymmetric transceiver for RFID readers
KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK. KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK. KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK. KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, VinnExcellence Center for Intelligence in Paper and Packaging, iPACK. KTH, Skolan för informations- och kommunikationsteknik (ICT), Elektroniksystem.
Vise andre og tillknytning
2011 (engelsk)Inngår i: European Solid-State Circuits Conference, 2011, s. 179-182Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

This paper presents an integrated asymmetric transceiver in 90nm CMOS technology for RFID reader. The proposed reader uses UHF transmitter to power up and inventory the tags. In the reverse link, a non-coherent Ultra-wide Band (UWB) receiver is deployed for data reception with high throughput and ranging capability. The transmitter delivers 160 kb/s ASK modulated data by an integrated modulator and a Digital Controlled Oscillator (DCO) in UHF band with 11% tuning range. The DCO consume 6 mW with 0.12 mm2 area. On the other side, adopting two integration channels, the 3-5 GHz energy detection receiver supports maximum 33 Mb/s data rate both in OOK and PPM modulations. The receiver front-end provides 59 dB voltage gain and 8.5 dB noise figure (NF). Measurement results shows that the receiver achieves an input sensitivity of -79 dBm at 10 Mb/s, with power consumption of 15.5 mW.

sted, utgiver, år, opplag, sider
2011. s. 179-182
Emneord [en]
ASK modulated data;CMOS UHF/UWB asymmetric transceiver;CMOS technology;OOK modulation;PPM modulation;RFID reader;UHF band;UHF transmitter;data reception;digital controlled oscillator;gain 59 dB;integrated asymmetric transceiver;noise figure 8.5 dB;noncoherent ultra-wide band receiver;power 15.5 mW;power 6 mW;reverse link;size 90 nm;tuning range;CMOS integrated circuits;UHF integrated circuits;amplitude shift keying;radio reception;radio transceivers;radiofrequency identification;ultra wideband communication;
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-49204DOI: 10.1109/ESSCIRC.2011.6044894Scopus ID: 2-s2.0-82955201686ISBN: 978-145770701-8 (tryckt)OAI: oai:DiVA.org:kth-49204DiVA, id: diva2:459409
Konferanse
37th European Solid-State Circuits Conference, ESSCIRC 2011; Helsinki; Finland; 12 September 2011 through 16 September 2011
Merknad

QC 20150713

Tilgjengelig fra: 2011-11-25 Laget: 2011-11-25 Sist oppdatert: 2016-11-11bibliografisk kontrollert
Inngår i avhandling
1. Radio and Sensor Interfaces for Energy-autonomous Wireless Sensing
Åpne denne publikasjonen i ny fane eller vindu >>Radio and Sensor Interfaces for Energy-autonomous Wireless Sensing
2016 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
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%.

sted, utgiver, år, opplag, sider
KTH Royal Institute of Technology, 2016. s. xviii, 93
Emneord
Ultra-wideband, asymmetric UHF/UWB radio, clock harvesting, time-domain sensing, energy efficiency, Internet-of-things
HSV kategori
Forskningsprogram
Informations- och kommunikationsteknik
Identifikatorer
urn:nbn:se:kth:diva-184851 (URN)978-91-7595-855-2 (ISBN)
Disputas
2016-05-02, Sal/hall B, Electrum, KTH-ICT, Kista, Kista, 13:30 (engelsk)
Opponent
Veileder
Forskningsfinansiär
VINNOVA
Merknad

QC 20160412

Tilgjengelig fra: 2016-04-12 Laget: 2016-04-05 Sist oppdatert: 2016-04-18bibliografisk kontrollert
2. Sub-Nyquist Sampling Impulse Radio UWB Receivers for the Internet-of-Things
Åpne denne publikasjonen i ny fane eller vindu >>Sub-Nyquist Sampling Impulse Radio UWB Receivers for the Internet-of-Things
2016 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

In the era of Internet-of-Things, the demand for short range wireless links featured by low-power and low-cost, robust communication and high-precision positioning is growing rapidly. Impulse Radio Ultra-Wideband (IR-UWB) technology characterized by the transmission of sub-nanosecond pulses spanning up to several GHz band with extremely low power spectral density emerges as a promising candidate. Nevertheless, several challenges must be confronted in order to take the full advantage of IR-UWB technology. The most significant one lies in the reception of UWB signals. Traditional receiver requires Nyquist rate ADC which is overwhelmingly complex and power hungry. This dissertation proposes and investigates possible sub-Nyquist sampling techniques for IR-UWB receiver design.

In the first part of this dissertation, the IR-UWB receiver based on energy detection (ED) principle is explored. A low-power ED receiver featured by flexibility and multi-mode operation is proposed. The receiver prototype for 3-5 GHz band is implemented in 90 nm CMOS. Measurement results demonstrate that 16.3 mW power consumption and -79 dBm sensitivity at 10 Mb/s data rate can be achieved. To further optimize the receiver performance, threshold optimization is suggested for the on-off-keying modulated signal, and adaptive synchronization and integration region optimization is proposed. Finally, a low complexity burst packet detection scheme is proposed, which is adaptive to the variations of noise background and link distance.

In the second part of this dissertation, the IR-UWB receiver based on compressed sensing (CS) theory is investigated. Firstly, appropriate sparse basis, sensing matrix and reconstruction algorithms are suggested for the CS based IR-UWB receiver. And then, the architectural analysis of the CS receiver with focuses on the random noise processes in the CS measurement procedure is presented. At last, a novel two-path noise-reducing architecture for the CS receiver is proposed. Besides the improvement on the receiver performance, the proposed architecture also relaxes the hardware implementation of the CS random projection as well as the back-end signal reconstruction.

sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2016. s. 79
Serie
TRITA-ICT ; 2016:23
Emneord
Ultra-Wideband, impulse radio, receiver, energy detection, compressed sensing, sub-Nyquist sampling, Internet-of-Things
HSV kategori
Forskningsprogram
Informations- och kommunikationsteknik
Identifikatorer
urn:nbn:se:kth:diva-195816 (URN)978-91-7729-174-9 (ISBN)
Disputas
2016-12-12, Sal 205, Electrum, Kista, 09:00 (engelsk)
Opponent
Veileder
Merknad

QC 20161110

Tilgjengelig fra: 2016-11-10 Laget: 2016-11-09 Sist oppdatert: 2016-11-10bibliografisk kontrollert

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