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Balasubramanian, Sidharth

2013, Doctor of Philosophy, Ohio State University, Electrical and Computer Engineering.
Despite the tremendous advancement in innovations in digitizing and processing signals over the last century, real world signals are inevitably analog in nature. Several approaches have been researched and deployed in order to facilitate the maneuver between the digital and analog domains. Specifically, digital-to-analog converters (DACs) are the lynchpin in systems that realize this art of moving from the digital to the analog world.

Several real-world imperfections and limitations have impeded the efficacy of DACs in terms of accuracy, speed and power. Howbeit, a myriad of efforts has been made in the recent past towards improving the performance of DACs. Furthermore, the fundamental conception of DACs poses several challenges at the architectural, circuit and technological levels. These challenges mandate a solid understanding in order to enable DAC designers to move up and down the device-circuit-architecture ladder with dexterity.

A closer look at the genetic conception of DACs also reveals interesting answers behind some of the well-known questions, such as: How is the spectral performance related to the resolution? Why does distortion in DACs degrade at high frequencies? In order to effectively address these questions, the science behind digital to analog conversion needs to be revisited from a fresh perspective - what is called as a genetic bit-by-bit engineering approach. Such a radical study leads to fascinating ways to conceive DACs that perform well above their expected limit.

This dissertation aims to provide a neoteric and holistic view of the fundamental conception, limitations and challenges in how digital data transcends into the analog world. The quantitative study of this process leads to several transformational benefits; of most importance is the ability to engineer D/A converters to provide high resolution performance with low-resolution data, thereby creating the doors to a brand new field of compressive transmission.
Waleed Khalil (Advisor)
John Volakis (Committee Member)
Patrick Roblin (Committee Member)
Anish Arora (Committee Member)
189 p.

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Balasubramanian, S. (2013). STUDIES ON HIGH-SPEED DIGITAL-TO-ANALOG CONVERSION. (Electronic Thesis or Dissertation). Retrieved from

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Balasubramanian, Sidharth. "STUDIES ON HIGH-SPEED DIGITAL-TO-ANALOG CONVERSION." Electronic Thesis or Dissertation. Ohio State University, 2013. OhioLINK Electronic Theses and Dissertations Center. 25 Sep 2017.

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Balasubramanian, Sidharth "STUDIES ON HIGH-SPEED DIGITAL-TO-ANALOG CONVERSION." Electronic Thesis or Dissertation. Ohio State University, 2013.


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