Search
Now showing items 11-20 of 50
Integration of Thin Flip Chip in Liquid Crystal Polymer Based Flex
(2008-09-09)
Thin embedded active assemblies have been developed that combine a lower profile and high functional density (per volume) with a flexible appearance, meeting the demands for the miniaturization of electronic products. The ...
Nonlinear Systems Control Using a Subset Stabilization Approach
(2008-09-09)
Numerous problems in nonlinear control systems are difficult or impossible to solve with commonly proposed methods of design. For such systems, we propose a two-loop control strategy that we call the subset stabilization ...
Design and Implementation of Digital Controllers for Buck and Boost Converters Using Linear and Nonlinear Control Methods
(2009-02-23)
Issues in the design and implementation of digital controllers for a buck converter and a boost converter using linear and nonlinear control methods were investigated in this dissertation. The small signal models of the ...
Frequency Syntheses with Delta-Ssigma Modulations and their Applications for Mixed Signal Testing
(2009-02-23)
This dissertation presents design and application of two popular frequency synthesizers, namely, the direct digital frequency synthesis (DDS) and phase lock loop (PLL) synthesis.
DDS is a digital technique for frequency ...
Lead-Free Assembly and Reliability of Chip Scale Packages and 01005 Components
(2009-02-23)
Chip Scale Packages (CSPs) are widely used in portable and hand-held electronic devices due to their small size and availability. Consumers expect portable products to survive being dropped repeatedly, and drop testing is ...
Growth and Characterization of Nitrogen Doped Nanocrystalline Diamond Films
(2009-02-23)
Nitrogen doped nanocrystalline (NCD) diamond films have been deposited on a variety of substrates using microwave plasma chemical vapor deposition (MWPCVD). These films have been systematically studied to determine their ...
A Novel ROM Compression Technique and a High Speed Sigma-Delta Modulator Design for Direct Digital Synthesizer
(2009-02-23)
Traditional designs of high bandwidth frequency synthesizers employ phase locked
loops (PLLs). A direct digital frequency synthesizer (DDFS) provides multiple
advantages over the frequency synthesizers that use PLLs. A ...
Ad-hoc and Multi-hop Wireless Sensor Networks for Activity Capture in Cooperative Robotics
(2008-09-09)
Cooperative robotics has been the focus of attention of various groups in recent years. The idea of using a team of robots instead of a single one to execute a task came from the necessity of accomplishing a task that is ...
Modeling and Scaling Limitations of SiGe HBT Low-Frequency Noise and Oscillator Phase Noise
(2008-09-09)
This dissertation presents modeling of SiGe HBT low-frequency noise and oscillator phase noise, and examines their limitations posed by technology scaling. A new method of extracting low-frequency noise, inverse circuit ...
Improved RF Noise Modeling for Silicon-Germanium Heterojunction Bipolar Transistors
(2008-09-09)
Accurate radio frequency (RF) noise models for individual transistors
are critical to minimize noise during mixed-signal analog and RF circuit design.
This dissertation proposes two improved RF noise models
for SiGe ...