Please use this identifier to cite or link to this item: http://localhost:8081/xmlui/handle/123456789/10215
Full metadata record
DC FieldValueLanguage
dc.contributor.authorKumar, Mukesh-
dc.date.accessioned2014-11-23T08:36:36Z-
dc.date.available2014-11-23T08:36:36Z-
dc.date.issued1991-
dc.identifierM.Techen_US
dc.identifier.urihttp://hdl.handle.net/123456789/10215-
dc.guideGupta, S. C.-
dc.description.abstractAn absorber is defined by a surface which gives very small reflection when illuminated by electromagnetic source. Absorbent coatings are used on the walls of anechoic chambers and o.n the enterior surface of military aircraft and vehicles to achieve radar invisibility. The present study has been devoted to design a thin, broadband, dielectric absorbers using graphite in X-band. In chapter-2 various theories have been given to calculate 'the reflection loss at any angle of incidence, polarization and frequency. First the impedance method to calculate the reflection coefficient has been discussed. In the end of this chapter a different approach has been given to calculate reflection coefficient for normal incidence. This approach can be used to write computer program. In third chapter the approach for designing the graphite absorber has been discussed in detail. The basic material of absorber is polystyrol powders coated with graphite. The absorber has been designed in X-band (8.5-12.5 GHz) for different thicknesses of a layer. The various calculated and measured results have been discussed in chapter-5. The comparison of design method given here and converging impedance method has been discussed also. Finally a single layer absorber has been fabricated, and tested. A theoretical study of other multilayer absorbers has been given also.en_US
dc.language.isoenen_US
dc.subjectELECTRONICS AND COMPUTER ENGINEERINGen_US
dc.subjectGRAPHITE ABSORBERSen_US
dc.subjectMICROWAVE FREQUENCIESen_US
dc.subject8.5-12.5 GHzen_US
dc.titleSTUDY OF GRAPHITE ABSORBERS AT MICROWAVE FREQUENCIESen_US
dc.typeM.Tech Dessertationen_US
dc.accession.number246202en_US
Appears in Collections:MASTERS' DISSERTATIONS (E & C)

Files in This Item:
File Description SizeFormat 
ECD246202.pdf2.47 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.