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2017_Patel_Dissertation_Final.pdf (8.33 MB)

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A Poly-phased, Time-interleaved Radio Frequency Digital-to-analog Converter (Poly-TI-RF-DAC)

Patel, Vipul J.
http://rave.ohiolink.edu/etdc/view?acc_num=wright1516146989134088

Abstract Details

2017, Doctor of Philosophy (PhD), Wright State University, Electrical Engineering.
With increasing data rates and new communication standards owing to substantial advancements in digitizing and signal processing capabilities over the last century, the radio spectrum is increasingly becoming a finite and expensive resource. Furthermore, radar systems and 5G communication systems have revealed the need for gigahertz-frequency signal generation with flexible frequency planning and minimal spurious emissions. Advanced digital-to-analog converters (DACs), along with associated filtering, are critical enablers of these new systems and play a key role in meeting stringent system requirements. In conventional implementations, however, high quality filters are specific to one frequency band thereby limiting their operational agility. Therefore, a DAC architecture that removes undesired image replicas, mixer sidebands, and harmonic nonlinearities is an essential component for flexible frequency synthesis as it allows for reduced filtering requirements while enabling new software-defined transmitter techniques. This dissertation aims to provide a quantitative study and analysis of a poly-phased, time-interleaved Nyquist radio frequency digital-to-analog converter (Poly-TI-RF-DAC) for use in spectrum-agile and software-defined transmitters. Beginning with the fundamental understanding of high-speed DAC capabilities and limitations, the mathematical and behavioral analyses give insight into the signal, sideband, and image replica locations of the proposed architecture. Additionally, the use of a mixing DAC as the core structure is discussed along with how nonlinearities can be canceled with the appropriate choice of frequency planning.
John Emmert, Ph.D. (Advisor)
Waleed Khalil, Ph.D. (Advisor)
Saiyu Ren, Ph.D. (Committee Member)
Raymond Siferd, Ph.D. (Committee Member)
Paul Watson, Ph.D. (Committee Member)
104 p.
Electrical Engineering
Communications; DACs; Frequency-agile; Mixer; Poly-phase; Radar; RF-DACs; SDR; Transmitter

Recommended Citations

Citations

  • Patel, V. J. (2017). A Poly-phased, Time-interleaved Radio Frequency Digital-to-analog Converter (Poly-TI-RF-DAC) [Doctoral dissertation, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1516146989134088

    APA Style (7th edition)

  • Patel, Vipul. A Poly-phased, Time-interleaved Radio Frequency Digital-to-analog Converter (Poly-TI-RF-DAC). 2017. Wright State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1516146989134088.

    MLA Style (8th edition)

  • Patel, Vipul. "A Poly-phased, Time-interleaved Radio Frequency Digital-to-analog Converter (Poly-TI-RF-DAC)." Doctoral dissertation, Wright State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1516146989134088

    Chicago Manual of Style (17th edition)

wright1516146989134088
624
© 2017, some rights reserved.Creative Commons License A Poly-phased, Time-interleaved Radio Frequency Digital-to-analog Converter (Poly-TI-RF-DAC) by Vipul J. Patel is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Wright State University and OhioLINK.