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UID:20260523T121116EDT-1570DuTdUz@132.216.98.100
DTSTAMP:20260523T161116Z
DESCRIPTION:Abstract\n\n \n\nUsing an integrated micro-heater and a phase-l
 ocked loop (PLL) configuration\, a technique to create a temperature-insen
 sitive area on a die is described. The proposed PLL configuration employs 
 thermal feedback through the micro-heater to significantly improve the tem
 perature stability of the die area. Two oscillators are employed in the PL
 L to act as temperature sensors to detect the ambient temperature variatio
 ns and command the thermal loop to compensate them. The temperature stabil
 ity of these oscillators located in the temperature-compensated die area i
 s improved significantly and can provide a stable timing signal needed for
  the system. The temperature compensation of oscillators provided by this 
 technique is studied in more detail. Design methodologies and system-level
  analysis are presented. An application on temperature compensation of MEM
 S-based oscillators is studied with analysis and simulations. Based on the
 se preliminary steps\, an all-CMOS test-chip for proof-of-concept is desig
 ned and fabricated using a standard 130 nm CMOS technology. Analysis and e
 xperimental results show that the micro-heating system employed in this te
 chnique can provide a low pass filtering effect enough to replace the elec
 trical low pass filtering effect provided by a charge pump and a loop filt
 er. Therefore\, the charge pump and the loop filter existing in the conven
 tional PLL loops can be eliminated in this system. Test characterization o
 f the realized proof-of-concept chip shows that the temperature stability 
 of the die area can be improved by a factor as large as 50x for an ambient
  temperature range of 36°C to 52°C. Simulation shows that this range can b
 e improved by many folds using more heat preserving technologies like SOI 
 CMOS instead of bulk CMOS.\n
DTSTART:20230531T140000Z
DTEND:20230531T160000Z
LOCATION:Room 603\, McConnell Engineering Building\, CA\, QC\, Montreal\, H
 3A 0E9\, 3480 rue University
SUMMARY:PhD defence of Ali Gorji Zadeh -  'Temperature compensation of osci
 llators using a phase-locked loop with a thermal feed-back'
URL:/ece/channels/event/phd-defence-ali-gorji-zadeh-te
 mperature-compensation-oscillators-using-phase-locked-loop-thermal-348492
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