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NPS ARCHIVE 1997, 0(c SMILOWITZ, G. NAVAL POSTGRADUATE SCHOOL MONTEREY, CALIFORNIA THESIS FINAL DESIGN, INTEGRATION AND VALIDATION OF THE PANSAT ANTENNA SYSTEM by Gary J. Smilowitz June, 1997 Thesis Advisor: Richard W. Adler Thesis Approved for public release; distribution is unlimited. S57215 OHOOL " J-3101 DUDLEY KNOX LIBRARY NAVAL POSTGRADUATESCHOOL MONTEREY, CA 93943-5101 REPORT DOCUMENTATION PAGE FormApprovedOMBNo.0704-018 Publicreportingburdenforthiscollectionofinformationisestimatedtoaverage1hourperresponse,includingthetimeforreviewinginstruction,searchingexistingdatasources gatheringandmaintainingthedataneeded,andcompledngandreviewingthecollectionofinformation.Sendcommentsregardingthisburdenestimateoranyotheraspectofthis collectionofinformation,includingsuggestionsforreducingthisburden,toWashingtonHeadquartersServices,DirectorateforInformationOperationsandReports, 1215 JeffersonDavisHighway,Suite1204,Arlington,VA22202-4302,andtotheOfficeofManagementandBudget,PaperworkReductionProject(0704-0188)WashingtonDC 20503. 1. AGENCYUSEONLY(Leaveblank) 2. REPORTDATE 3. REPORTTYPEANDDATESCOVERED 19June 1997. Master's Thesis TITLEANDSUBTITLE FINALDESIGN,INTEGRATIONANDVALIDATION FUNDINGNUMBERS OFTHEPANSATANTENNA SYSTEM 6. AUTHOR(S) Gary J. Smilowitz PERFORMINGORGANIZATIONNAME(S)ANDADDRESS(ES) PERFORMING 7. Naval Postgraduate School ORGANIZATION Monterey CA 93943-5000 REPORTNUMBER SPONSORING/MONITORINGAGENCYNAME(S)ANDADDRESS(ES) 10. SPONSORING/MONITORING AGENCYREPORTNUMBER 11. SUPPLEMENTARYNOTES The views expressed in this thesis arethoseofthe authorand do not reflectthe official policy orposition oftheDepartmentofDefense orthe U.S. Government. 12a. DISTRIBUTION/AVAILABILITY STATEMENT 12b. DISTRIBUTIONCODE Approved forpublic release; distribution is unlimited. 13. ABSTRACT(maximum 200words) In this thesis, the final design for the Petite Amateur Navy Satellite (PANSAT) antenna system is constructed, integrated and validated. The antenna elements and matching network are field tested and compared to the Numerical Electromagnetics Code (NEC) model. The final free-space radiation pattern and its power gain distribution will be used to help track PANSAT's rotation during its orbit. 14. SUBJECTTERMS Satellite AntennaDesign 15. NUMBEROF Numerical Electromagnetics Code (NEC) PAGES 87 PANSAT 16. PRICECODE 17. SECURITYCLASSIFICA- 18. SECURITY CLASSIFI- 19. SECURITYCLASSIFICA- 20. LIMITATIONOF TIONOFREPORT CATIONOFTHIS PAGE TIONOFABSTRACT ABSTRACT UL Unclassified Unclassified Unclassified NSN7540-01-280-5500 StandardForm298 (Rev. 2-89) PrescribedbyANSIStd.239-18298-102 11 Approved for public release; distribution is unlimited. FINAL DESIGN, INTEGRATION AND VALIDATION OF THE PANSAT ANTENNA SYSTEM Gary J. ^milowitz Lieutenant Commander, United States Navy B.E. EE, Vanderbilt University, 1985 Submitted in partial fulfillment ofthe requirements for the degree of MASTER OF SCIENCE IN ELECTRICAL ENGINEERING from the NAVAL POSTGRADUATE SCHOOL /- June 1993, . M LIBRARY DUDLEY KNOX LIBRARY NAVAL POSTGRADUATE SCHOOL ADUATF«SjCHHOOOmL MONTEREY, CA93943-5101 ABSTRACT In this thesis, the final design for the Petite Amateur Navy Satellite (PANSAT) antenna system is constructed, integrated and validated. The antenna elements and matching network are field tested and compared to the Numerical Electromagnetics Code (NEC) model. The final free-space radiation pattern and its power gain distribution will be used to help track PANSAT's rotation during its orbit. VI 11 TABLE OF CONTENTS INTRODUCTION I. 1 A. OBJECTIVES 1 B. PANSAT SPECIFICATIONS 1 C. PREVIOUS ANTENNA DEVELOPMENT 4 D. DESIGN AND TESTING PLAN 4 H. ELEMENT DESIGN 6 A. ANTENNA SPECIFICATIONS 6 B. TESTING AND MODELING 9 INTEGRATION C. 10 m. ANTENNA FEED SYSTEM 1 A. SPECIFICATIONS AND DESIGN 1 B. TESTING 12 INTEGRATION C. 15 IV. FINAL DESIGN 16 A. FIELD TESTS 16 MODELING B. 21 C. COMPARISONS 23 V. CONCLUSIONS AND RECOMMENDATIONS 27 A. DESIGN AND VALIDATION 27 B. LINK BUDGET AND DEPLOYMENT. 27 C. CONCLUSIONS 29 RECOMMENDATIONS D. 30 APPENDIX A. FIELD TEST DATA 31 APPENDIX B. FINAL DESIGN NEC INPUT FILE 35 APPENDIX C. FINAL DESIGN NEC OUTPUT FILE 40 APPENDIX D. MATLAB CODE FOR PLOTTING GAINS 48 APPENDIX E. PROGRAM TO INPUT DATA TO PLOTTING ROUTINE 52 APPENDIX F. MATLAB AND NEC PLOTS OF FIELD TESTS 53 APPENDIX G. GROUND STATION REFERENCE SECTION 64 1. GAIN PATTERN FOR SAt= 0°, <E>sat=45° 65 vii 2. GAIN PATTERN FOR Sat= 0°, <E>Sat=90° 66 3. GAIN PATTERN FOR SAt= 45° 67 4. GAIN PATTERN FOR Sat= 90° 68 5. GAIN PATTERN FOR SAt= 135° 69 LIST OF REFERENCES 70 BIBLIOGRAPHY 71 INITIAL DISTRIBUTION LIST. 72 Vlll