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A 35 pJ/pulse injec...
A 35 pJ/pulse injection-locking based UWB transmitter for wirelessly-powered RFID tags
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- Mao, Jia (författare)
- KTH,Elektroniksystem
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- Zou, Zhuo (författare)
- KTH,Elektroniksystem
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- Zheng, Lirong (författare)
- KTH,Elektroniksystem
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(creator_code:org_t)
- 2013
- 2013
- Engelska.
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Ingår i: 2013 Proceedings of the ESSCIRC (ESSCIRC). - 9781479906437 ; , s. 379-382
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- This paper presents an energy-efficient injection-locking based UWB transmitter for RFID tags in a 0.18 μm CMOS technology. The transmitter is powered by 900 MHz UHF signals radiated by a reader wirelessly, and responds UWB pulses by locking-gating-amplifying the sub-harmonic of the UHF signal. A simple harmonic injection-locking ring oscillator (ILRO) is utilized to generate a 450 MHz carrier for sub-GHz UWB, eliminating power-hungry and complex timing components such as PLL and crystal on tags. The measurement results show that the sensitivity of the ILRO is -15 dBm under 21% locking range without any extra amplifier. Thanks to fast setup time of the ILRO, the proposed transmitter is power-scalable with 35 pJ/pulse energy consumption by duty-cycling. The amplitude of the transmitted UWB pulse is 0.75 Vpp, allowing a pulse rate up to 5 MHz under the FCC regulations. The entire power consumption of the transmitter is 175 μW, which is favorable to wirelessly-powered RFID applications.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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