Oscillators and phase locked loops for space radiation environments

dc.contributor	Moon, Un-Ku
dc.contributor	Mayaram, Kartikeya
dc.contributor	Wang, Zhongfeng
dc.contributor	Kruzic, Jamie
dc.date	2005-09-13T20:58:45Z
dc.date	2005-09-13T20:58:45Z
dc.date	2005-08-25
dc.date	2005-09-13T20:58:45Z
dc.date.accessioned	2013-10-16T07:27:14Z
dc.date.available	2013-10-16T07:27:14Z
dc.date.issued	2013-10-16
dc.identifier	http://hdl.handle.net/1957/446
dc.identifier.uri	http://koha.mediu.edu.my:8181/xmlui/handle/1957/446
dc.description	Graduation date: 2006
dc.description	Circuits operating outside the earth’s atmosphere are more vulnerable to cosmic radiation and require special design consideration. The purpose of this work is to explore methods of mitigating the effect of radiation in phase locked loop (PLL) circuits. Several voltage controlled oscillators (VCOs) and two complete PLLs are designed and fabricated in a 0.35µm silicon on insulator (SOI) CMOS process. These circuits are characterized before and after exposure to total ionizing dose (TID) radiation to determine the effect of the radiation. This work shows that TID radiation has a relatively minor effect on PLL circuits in SOI process technology. All digital PLLs (ADPLLs) also provide increased resistance to radiation and thus are attractive for space applications. The design of a digitally controlled analog oscillator (DCAO), a key component of an ADPLL, is also presented.
dc.language	en_US
dc.subject	PLL
dc.subject	Radiation
dc.title	Oscillators and phase locked loops for space radiation environments
dc.type	Thesis

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