“Reverse Engineering a passive UHF RFID Tag” was a tutorial given at IEEE RFID 2016. The talk was motivated by the fact that the EPC Gen2 protocol is available publicly, but the ISO-18000 documents are not. The tutorial is “mostly correct” technically; however, the audience was expected to be mostly RF/Radar people, the talk is very light on the circuit details. There are several errors on the OTA slides due to poor copying; so, caveat lector, if it the schematic looks wrong: it is. The table for the 130 process also has “um” where I should have had “nm”. 03 MAY 2016 Brian Degnan http://users.ece.gatech.edu/~degs
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“Reverse Engineering a passive UHF RFID Tag” was a · “Reverse Engineering a passive UHF RFID Tag” was a tutorial given at IEEE RFID 2016. The talk was motivated by the fact
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“Reverse Engineering a passive UHF RFID Tag” was a tutorial given at IEEE RFID 2016. The talk was motivated by the fact that the EPC Gen2 protocol is available publicly, but the ISO-18000 documents are not. The tutorial is “mostly correct” technically; however, the audience was expected to be mostly RF/Radar people, the talk is very light on the circuit details.
There are several errors on the OTA slides due to poor copying; so, caveat lector, if it the schematic looks wrong: it is. The table for the 130 process also has “um” where I should have had “nm”.
03 MAY 2016Brian Degnanhttp://users.ece.gatech.edu/~degs
ReverseEngineeringapassiveUHFRFIDTag
Whynot?
BrianDegnan,Ph.D.
What’sthisabout?
• AparAalimplem
entaAonGen2forUHFRFID
• Whytheelectronicsideisrelevant.
• Components(sam
ebutdifferent)• System
componentsandbounding
theproblem
• CircuitintuiAon
TheTagSystem
• Gen2:860MHz-960M
Hzsub40kHz-640kHz• PassivelyPow
ered~20ktransistors
gSystematalink
Why
other?• IhaveW
ISPs!• Icanjustputaba\eryonit.• IcannottaketheAm
etodesignfrom
scratch• Rem
ovalofconstraintsopensinnovaAon
EnergyStorage• 1000J~1m
^2sunlightsecondsecond
• 100Jreleasedfrom
ahuman
persecond• U
SAuses4W
EIRP
MooreM
oreMooreLess
AssumpAons:
--Transistorsscaling--Processingpow
ercorrelatestotransistors
Moore’soriginalgraph.
Degnanetal,AssessingTrendsinPerform
anceperWa\forSignalProcessingApplicaAons
TVLSI2014
Howthingsusedtobe.
Advantages
• SuperiorPowerPerform
ance• SuperiorProcessingPow
er
A130nmProcess
eviceReview:
ransistor
• MOSFETisoneofm
anydevices.• Voltagecontrolledcurrentsource• Theinputlookslikeacapacitor• M