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Bi-Directional Vector Variable Gain Amplifier for an X-Band Phased Array Radar Application

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dc.contributor.advisorRobert W. Jackson
dc.contributor.authorMashayekhi, Arash
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.contributor.departmentElectrical & Computer Engineering
dc.date2023-09-23T08:34:14.000
dc.date.accessioned2024-04-26T20:38:07Z
dc.date.available2014-06-16T00:00:00Z
dc.date.issued2014-01-01
dc.date.submittedFebruary
dc.description.abstractThis thesis presents the design, layout, and measurements of a bi-directional amplifier with variable vector (in-phase / quadrature) gain control that will be part of an electronically steered phased array system. The electronically steered phased array has many advantages over the conventional mechanically steered antennas including rapid scanning of the beam and adaptively creating nulls in desired locations. The 10-bit bi-directional Vector Variable Gain Amplifier (VVGA) is part of the transmit and receive module of each antenna element where transmit and receive functionality is determined through a simple switch. The VVGA performs amplification of the IF IQ pair by an adjustable complex coefficient. At receive, the VVGA functions as a Vector Variable Gain Current Amplifier (VVGCA) and at transmit, the VVGA functions as a Vector Variable Gain Transadmittance Amplifier (VVGTA). Design procedure, layout entry, schematic and parasitic extracted simulation results, and measurements are presented in this thesis.
dc.description.degreeMaster of Science in Electrical and Computer Engineering (M.S.E.C.E.)
dc.identifier.doihttps://doi.org/10.7275/4931991
dc.identifier.urihttps://hdl.handle.net/20.500.14394/44635
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=2341&context=theses&unstamped=1
dc.source.statuspublished
dc.subjectvariable gain
dc.subjectphased array
dc.subjectcomplex gain
dc.subjectbi-directional
dc.subjectamplifier
dc.subjectquadrature
dc.subjectControls and Control Theory
dc.subjectElectrical and Electronics
dc.subjectElectronic Devices and Semiconductor Manufacturing
dc.subjectVLSI and Circuits, Embedded and Hardware Systems
dc.titleBi-Directional Vector Variable Gain Amplifier for an X-Band Phased Array Radar Application
dc.typeopen
dc.typearticle
dc.typethesis
digcom.contributor.authorisAuthorOfPublication|email:amashaye@student.umass.edu|institution:University of Massachusetts Amherst|Mashayekhi, Arash
digcom.date.embargo2014-06-16T00:00:00-07:00
digcom.identifiertheses/1190
digcom.identifier.contextkey4931991
digcom.identifier.submissionpaththeses/1190
dspace.entity.typePublication
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