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Analysis and Design of Coupled-Oscillator Arrays for Microwave Systems

Moussounda, Renaud
http://rave.ohiolink.edu/etdc/view?acc_num=osu1388354578

Abstract Details

2014, Doctor of Philosophy, Ohio State University, Electrical and Computer Engineering.
The concept of synchronized nonlinear coupled oscillators is applied to microwave and antenna engineering for the analysis and design of wireless communication and sensing systems operating at the microwave and/or millimeter (mm)-wave frequencies. The significance of such approach is justified from the potential gain in efficiency, weight, cost and functionality although technical challenges stand in the way. Unlike typical phased array systems, which are currently used to construct such systems, coupled-oscillator systems present additional challenges that mainly arise from maintaining stability and synchronization as the the coupled nonlinear system is operated. Linear systems do not present such stability issues and are consequently faster since they do not rely on any gradual synchronization mechanism in order to function. However, at significantly higher frequencies in the quasi-optical domain, coupled-oscillator systems can make up for the speed difference and present significant efficiency advantages over typical phased array architectures. In addition, coupled nonlinear systems possess inherent analog properties that can be used for a multitude of functions. This dissertation advances the topic of coupled-oscillator arrays by 1) developing an alternative set of techniques for designing the oscillating unit cells called active integrated antennas (AIAs) at microwave or mm-wave frequencies, 2) developing a more accurate description of the dynamics of the array, 3) developing and implementing a new topology for a coupling network that is able to extend stability, 4) implementing a fully non-reciprocally coupled array able to produce large scan angle without loss of stability, 5) proposing an architecture based on a single phase-locked loop (PLL) and containing a self-calibration mechanism, and finally 6) implementing a phase-boosting mechanism using simple circuits to amplify the phase difference between adjacent radiating antennas in order to increase scanning range.
Roberto Rojas (Advisor)
Patrick Roblin (Committee Member)
Teixiera Fernando (Committee Member)
160 p.
Electrical Engineering; Electromagnetics; Engineering; Mathematics; Physics
coupled-oscillator antenna arrays, phased arrays

Recommended Citations

Citations

  • Moussounda, R. (2014). Analysis and Design of Coupled-Oscillator Arrays for Microwave Systems [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1388354578

    APA Style (7th edition)

  • Moussounda, Renaud. Analysis and Design of Coupled-Oscillator Arrays for Microwave Systems. 2014. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1388354578.

    MLA Style (8th edition)

  • Moussounda, Renaud. "Analysis and Design of Coupled-Oscillator Arrays for Microwave Systems." Doctoral dissertation, Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1388354578

    Chicago Manual of Style (17th edition)

osu1388354578
2,158
© 2014, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.