ISU Electrical and Computer Engineering Archives

Phase array system design

Wanner, Shannon (2008) Phase array system design. PhD thesis, Iowa State University.

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Abstract

This dissertation presents a new architecture for controlling the amplitude and phases of signals in a fully integrated phased array system. The phase shifting is performed at baseband and is up-converted to a RF band using a phased locked loop as a frequency synthesizer which allows for precise control of the RF phases. A structure for a phase aid is presented for a fast phase hopping system. A mathematical model was shown for an adjustable amplification within a phased locked loop to mitigate phase distortion. A mutual coupling correctional network was proposed to mitigate pattern distortion induced from the active impedance model. An automatic tuner to reduce manufacturing variations within an array was proposed that will reduce unwanted effects from the active impedance model and minimize the losses due to reflections. A polarization alignment system was also proposed that will help improve the overall gain between the transmitting and receiving system.

EPrint Type:Thesis (PhD)
Uncontrolled Keywords:Phase Array, MIMO, Phase Lock Loop, Smart Antenna, Space Time Adaptive Communications.
Subjects:Electrical Engineering > ELECTROMAGNETICS & NONDESTRUCTIVE EVALUATION > Microwave Engineering/Mimic
Computer Engineering > VLSI > Mixed Circuit VLSI
Electrical Engineering > COMMUNICATION & SIGNAL PROCESSING > Wireless Communications
ID Code:439
Identification Number:Identification Number UNSPECIFIED
Deposited By:Mr Shannon Wanner
Deposited On:24 July 2008

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