Title:
Design of process and environment adaptive ultra-low power wireless circuits and systems

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dc.contributor.advisor Chatterjee, Abhijit
dc.contributor.author Sen, Shreyas en_US
dc.contributor.committeeMember Bonnie Heck Ferri
dc.contributor.committeeMember David Keezer
dc.contributor.committeeMember Saibal Mukhopadhyay
dc.contributor.committeeMember Satish Kumar
dc.contributor.department Electrical and Computer Engineering en_US
dc.date.accessioned 2013-01-17T20:47:37Z
dc.date.available 2013-01-17T20:47:37Z
dc.date.issued 2011-08-22 en_US
dc.description.abstract The objective of the proposed research is to investigate the design of Self-Aware Radio Frequency Circuits and Wireless Communication Systems that can adapt to environmental and process variations to always operate at minimum power levels possible, extending battery life. The explosive growth of portable battery operated devices has mandated design of low power circuits and systems to prolong battery life. These devices fabricated in modern nanoscale CMOS technologies suffer from severe process variation due to the reduced controllability of the fabrication process, causing yield loss. This calls for integrated low power and process tolerant design techniques, or design of systems that can adapt to its process and environment to maintain its performance while minimizing power consumption. Currently, most of the wireless circuits are designed to meet minimum quality-of-service requirements under worst-case wireless link conditions (interference, noise, multi-path effects), leading to high power consumption when the channel is better than worst-case. In this research, we develop a multi-dimensional adaptation approach for wireless transmitters and receivers that optimally trades-off power vs. performance across temporally changing operating conditions by concurrently tuning control parameters in the RF front end to lower power consumption. Tunable circuits (e.g. LNA) with built-in tuning knobs providing independent controllability of important specifications allow optimal adaptation. Process sensing using intelligent test and calibration facilitates yield improvement and the design of process tolerant environment adaptive systems. Low cost testing methodologies are developed for identification of the health of the wireless circuit/system. These are used in conjunction with tuning algorithms that tune a wireless system under process variation to meet performance specifications and recover yield loss. This testing and adaptation is performed once during the post manufacture test/tune phase to compensate for manufacturing variations. This can also be applied periodically during in field operation of a device to account for performance degradation due to ageing. Finally, process tolerant environment adaptive systems are designed. en_US
dc.description.degree PhD en_US
dc.identifier.uri http://hdl.handle.net/1853/45755
dc.publisher Georgia Institute of Technology en_US
dc.subject Process variation tolerant low power RF/AMS en_US
dc.subject.lcsh Electric batteries
dc.subject.lcsh Electric power supplies to apparatus
dc.subject.lcsh Low voltage integrated circuits
dc.subject.lcsh Low voltage systems
dc.subject.lcsh Microprocessors
dc.title Design of process and environment adaptive ultra-low power wireless circuits and systems en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Chatterjee, Abhijit
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
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relation.isOrgUnitOfPublication 5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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