Matching Items (4)
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- All Subjects: CMOS
- All Subjects: Guns
- Creators: Young, Alexander
- Creators: Aberle, James
- Status: Published
Description
MESFETs are used in high frequency applications and are typically made from GaAs. Dr. Trevor Thornton designed a silicon-on-insulator MESFET \u2014 a cheaper alternative with competitive capabilities. This paper concerns the characterization and modeling of this device to exhibit its marketability as a CMOS integrated transistor. Overviews of the MESFET's history and DLTS (deep level transient spectroscopy) are offered.
ContributorsTerrell, Catherine Elaine (Author) / Thornton, Trevor (Thesis director) / Young, Alexander (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor)
Created2014-05
Description
An in depth look at the rhetoric behind the campus carry debate at the University of Texas at Austin. This thesis researched and examined primary sources from The Daily Texan and The Austin-American Statesman attempting to analyze what was at stake for both sides of the argument and what the most effective rhetorical tool was.
ContributorsBlumstein, Cory Joshua (Author) / Young, Alexander (Thesis director) / O'Flaherty, Katherine (Committee member) / School of Criminology and Criminal Justice (Contributor) / School of Public Affairs (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
This thesis presents three novel studies. The first two works focus on galvanically isolated chip-to-chip communication, and the third research studies class-E pulse-width modulated power amplifiers. First, a common-mode resilient CMOS (complementary metal-oxide-semiconductor) galvanically isolated Radio Frequency (RF) chip-to-chip communication system is presented utilizing laterally resonant coupled circuits to increases maximum common-mode transient immunity and the isolation capability of galvanic isolators in a low-cost standard CMOS solution beyond the limits provided from the vertical coupling. The design provides the highest reported CMTI (common-mode transient immunity) of more than 600 kV/µs, 5 kVpk isolation, and a chip area of 0.95 mm2. In the second work, a bi-directional ultra-wideband transformer-coupled galvanic isolator is reported for the first time. The proposed design merges the functionality of two isolated channels into one magnetically coupled communication, enabling up to 50% form-factor and assembly cost reduction while achieving a simultaneously robust and state-of-art performance. This work achieves simultaneous robust, wideband, and energy-efficient performance of 300 Mb/s data rate, isolation of 7.8 kVrms, and power consumption and propagation delay of 200 pJ/b and 5 ns, respectively, in only 0.8 mm2 area. The third works studies class-E pulse-width modulated (PWM) Power amplifiers (PAs). For the first time, it presents a design technique to significantly extend the Power back-off (PBO) dynamic range of PWM PAs over the prior art. A proof-of-concept watt-level class-E PA is designed using a GaN HEMT and exhibits more than 6dB dynamic range for a 50 to 30 percent duty cycle variation. Moreover, in this work, the effects of non-idealities on performance and design of class-E power amplifiers for variable supply on and pulse-width operations are characterized and studied, including the effect of non-linear parasitic capacitances and its exploitation for enhancement of average efficiency and self-heating effects in class-E SMPAs using a new over dry-ice measurement technique was presented for this first time. The non-ideality study allows for capturing a full view of the design requirement and considerations of class-E power amplifiers and provides a window to the phenomena that lead to a mismatch between the ideal and actual performance of class-E power amplifiers and their root causes.
ContributorsJavidahmadabadi, Mahdi (Author) / Kitchen, Jennifer N (Thesis advisor) / Aberle, James (Committee member) / Bakkaloglu, Bertan (Committee member) / Burton, Richard (Committee member) / Arizona State University (Publisher)
Created2021
Description
The "no compromise" gun rights movement, which advocates against any form of gun control and the absolute right to keep and bear arms, and white Christian nationalism, a cultural framework built on the belief that Christianity should serve as the foundation of the American government, have both recently come to the national political forefront. The connection between these two movements runs deep: white Christian nationalism informs the religious rhetoric of the "no compromise" movement. To understand why this is, the existing scholarship argues that white Christian nationalists advocate against gun control because they believe the Second Amendment is divinely inspired and that gun control does not address what they perceive to be a moral decline in the United States. However, these explanations are insufficient to fully grasp the inherent importance of guns and gun rights to white Christian nationalists. Therefore, I examine the specific roles that guns play in their worldview.
ContributorsMyers, Patrick (Author) / Young, Alexander (Thesis director) / Livingston, Lindsay (Committee member) / Barrett, The Honors College (Contributor) / School of Accountancy (Contributor)
Created2023-12