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Oscillators and phase locked loops for space radiation environments

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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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