Single event upsets and noise margin enhancement of gallium arsenide Pseudo-Complimentary MESFET Logic

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1 Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection Single event upsets and noise margin enhancement of gallium arsenide Pseudo-Complimentary MESFET Logic Van Dyk, Steven E. Monterey, California. Naval Postgraduate School

2 NAVAL POSTGRADUATE SCHOOL MONTEREY, CALIFORNIA THESIS OTIC S ELECTE. :" "JAN 1 8 '996: G SINGLE EVENT UPSETS AND NOISE MARGIN ENHANCEMENT OF GALLIUM ARSENIDE PSEUDO-COMPLIMENTARY MESFET LOGIC By Steven E. Van Dyk June, 1995 Thesis Advisor: Douglas J. Fouts Approved for public release; distribution is unlimited '

3 REPORT DOCUMENTATION PAGE Fonn Approved OMB No Public reporting burden for this collection ofinfonnation is estimated to average I hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed. and completing and reviewing the collection ofinfonnation. Send comments regarding this burden estimate or any other aspect of this collection of infonnation. including suggestions for reducing this burden. to Washington Headquarters Services. Directorate for Infonnation Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA , and to the Office of Management and Budget, Paperwork Reduction Project ( ) Washington DC I. AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED 15 June 1995 Master's Thesis 4. SINGLE EVENT UPSETS AND NOISE MARGIN ENHANCEMENT OF 5. FUNDING NUMBERS GALLIUM ARSENIDE PSEUDO-COMPLIMENTARY MESFET LOGIC. 6. AUTHOR(S) Steven E. VanDyk 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING Naval Postgraduate School ORGANIZATION Monterey CA REPORT NUMBER 9. SPONSORINGIMONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORINGIMONITORING AGENCY REPORT NUMBER II. SUPPLEMENTARY NOTES The views expressed in this thesis are those ofthe author and do not reflect the official policy or position ofthe Department ofdefense or the U.S. Government. 12a. DISTRIBUTION/AVAILABILITY STATEMENT 12b. DISTRIBUTION CODE Approved for public release; distribution is unlimited. 13. ABSTRACT (maximum 200 words) The use ofgallium arsenide (GaAs) logic circuits in high perfonnance computers and digital systems in space applications is desirable due to their high speed and immunity to total dose radiation. Several problem areas must be overcome for more widespread use. First, GaAs MESFETs with short gate lengths are susceptible to single event upsets (SEU) in a high radiation environment and second, GaAs circuits consume relatively large amounts ofstatic power. To overcome the shortcomings ofthese areas, a new type ofgaas logic family called Pseudo-Complementary MESFET Logic (PCML) was designed. This new type ofgaas logic consumes less power than current logic families and provides improved tolerances to SEUs. Experiments which estimated the charge required to generate SEUs in PCML circuits are described. The power consumption ofa test circuit using PCML is analyzed and the data presented for a caparison against other GaAs logic families. Further refmements to PCML are discussed. 14. SUBJECT TERMS Single Event Upset, Gallium Arsenide Logic 15. NUMBER OF PAGES * PRICE CODE 17. SECURITY CLASSIFI- 18. SECURITY CLASSIFI- 19. SECURITY CLASSIFI- 20. LIMITATION OF CATION OF REPORT CATION OF THIS PAGE CATION OF ABSTRACT ABSTRACT Unclassified Unclassified Unclassified UL NSN Standard Fonn 298 (Rev. 2-89) Prescribed by ANSI Std

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5 Approved for public release; distribution is unlimited. SINGLE EVENT UPSETS AND NOISE MARGIN ENHANCEMENT OF GALLIUM ARSENIDE PSEUDO-COMPLIMENTARY MESFET LOGIC Steven E. Van Dyk Lieutenant Commander, United States Navy B.S., University ofsouthern California, 1980 Submitted in partial fulfillment ofthe requirements for the degree of MASTER OF SCIENCE IN ELECTRICAL ENGINEERING from the NAVAL POSTGRADUATE SCHOOL June 1995 Author: Approved by: Douglas 1. Fouts, Thesis Advisor iii

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