Small scale antenna diversity as a means of reducing the effects of multipath fading for handheld satellite communications systems

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dc.contributor.authorAllnutt, Richard Malloryen
dc.contributor.committeechairPratt, Timothy J.en
dc.contributor.committeememberStutzman, Warren L.en
dc.contributor.committeememberBostian, Charles W.en
dc.contributor.committeememberBrown, Gary S.en
dc.contributor.committeememberKohler, Werner E.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:21:52Zen
dc.date.adate2005-10-20en
dc.date.available2014-03-14T21:21:52Zen
dc.date.issued1995-11-03en
dc.date.rdate2005-10-20en
dc.date.sdate2005-10-20en
dc.description.abstractThis document discusses the measurements conducted at Virginia Tech, in Blacksburg, VA, and at COMSAT Labs, in Clarksburg MD, to determine the impact of multipath fading upon a circularly polarized L-Band satellite-to-handheld communications system using an omni-directional antenna. A significant finding was that motion of the satellite could induce fades of up to lOdB, well in excess of the small link margins available to satellite-to-handheld systems (typically ≤ 3dB). A method for ameliorating multi path fading was then sought. It was also found that the multipath fading effect was significantly different at as small a distance as half a wavelength from the original antenna position. Multipath signals could actually combine at the new position to form a small increase in signal to noise ratio (S/N), rather than a fade of as much as 16dB. Therefore it was determined that a small-scale antenna diversity system might offer a solution to the problem of multipath fading.en
dc.description.degreePh. D.en
dc.format.extentviii, 221 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10202005-102841en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10202005-102841/en
dc.identifier.urihttp://hdl.handle.net/10919/40049en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1995.A556.pdfen
dc.relation.isformatofOCLC# 58802950en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1995.A556en
dc.subject.lcshArtificial satellites in telecommunicationen
dc.titleSmall scale antenna diversity as a means of reducing the effects of multipath fading for handheld satellite communications systemsen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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