Browsing by Author "Jaeger, Richard C."

Now showing items 1-20 of 26

An Accurate CMOS Four-Quadrant Analog Multiplier

Gottiparthy, Ramraj (2006-05-15)

Analog multipliers are used in communication circuits, neural networks as well as frequency doublers, RMS circuits and phase detectors. High linearity is the prime issue for multipliers in conventional applications like ...

Characterization and Prediction of Material Response of Micro And Nano-Underfills for Flip Chip Devices

Islam, Muhammad (2006-05-15)

Silica particles are used as a filler material in electronic underfills to reduce coefficient of thermal expansion of the underfill-epoxy matrix. In traditional underfills, the size of silica particles is in the micrometer ...

Characterization of Die Stress in Microprocessor Packaging Due to Mechanical, Thermal, and Power Loading

Roberts, Jordan C. (2014-08-05)

Microprocessor packaging in modern workstations and servers often consists of one or more large flip chip die that are mounted to a high performance ceramic chip carrier. The final assembly configuration features a complex ...

Characterization of Die Stresses in Large Area Array Flip Chip Packages

Roberts, Jordan (2008-08-15)

Characterization of Thermally Induced Stress in IC Packages using Piezoresistive Sensors

John Akkara, Francy (2015-05-05)

This thesis presents the characterization of thermally induced stress in IC packages using CMOS sensor circuits. In various applications, the IC packages are exposed to extreme environments. The knowledge of the thermally ...

CMOS Stress Sensor Circuits

Chen, Yonggang (2006-12-15)

Two CMOS piezoresistive stress sensor circuits based on piezoresistive MOSFETs (PiFETs) are the focus of this dissertation. The first design is a multiplexed array of 512 piezoresistive sensors fabricated on a 2.2 by 2.2mm2 ...

Cold Cathodes for Applications in Poor Vacuum and Low Pressure Gas Environments: Carbon Nanotubes Versus Zinc Oxide Nanoneedles

Cheng, An-Jen (2006-05-15)

Effects of gas pressure on the electron field emission (FE) properties of zinc oxide (ZnO) nanoneedles and carbon nanotubes (CNTs) were investigated. The FE properties for ZnO nanoneedles almost fully recovered after being ...

Design and Implementation of a Software Defined Radio Receiver for AM Band

Shetye, Kalpesh (2007-08-15)

Since the mid-1990s, the radio industry has actively focused on implementing more and more radio functions in the digital domain. This has been furthered by availability of high speed, high performance data converters and ...

Design of Direct Digital Frequency Synthesizer for Wireless Applications

Chimakurthy, Lakshmi (2005-08-15)

Direct Digital Synthesis can be practically defined as a means of generating highly accurate and harmonically pure digital representations of signals. High speed DDS presents an attractive alternative to use of Phase locked ...

Die Stress Characterization and Interface Delamination Study in Flip Chip on Laminate Assemblies

Rahim, Md. Sayed Kaysar (2005-08-15)

Thermo-mechanical reliability of flip chip on laminate packaging is a major concern when the assemblies are exposed to harsh operating environments such as space or automotive underhood applications. In this study, ...

Efficient Determination of Copper Electroplating Chemistry Additives using Advanced Neural Network Algorithms

Ellis, Charles (2015-04-30)

Copper plating is the metallization process of choice for modern semiconductor devices. It has proven to be a relatively inexpensive and simple process and easily adaptable to high volume manufacturing. The development of ...

Experimental Characterization of the Temperature Dependence of the Piezoresistive Coefficients of Silicon

Cho, Chun (2007-08-15)

In this work, the dependence of the silicon piezoresistive coefficients p11, p12, and p44 on temperature is investigated. Experimental calibration results for the piezoresistive coefficients of silicon as a function of ...

Frequency Syntheses with Delta-Ssigma Modulations and their Applications for Mixed Signal Testing

Yang, Dayu (2006-12-15)

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 ...

Frequency Synthesizer Designs and Their Applications

Deng, Wenting (2007-08-15)

This thesis discusses design and applications of two main frequency synthesizers: direct digital frequency synthesis (DDS) and phase lock loop (PLL) synthesis. DDS is a quickly developed digital technique for frequency ...

Improved RF Noise Modeling for Silicon-Germanium Heterojunction Bipolar Transistors

Xia, Kejun (2006-12-15)

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 ...

Investigations on Damage Mechanics and Life Prediction of Fine-Pitch Electronics in Harsh Envirorments

Islam, Mohd (2005-08-15)

Increased use of sensors and controls in automotive applications has resulted in significant emphasis on the deployment of electronics directly mounted on the engine and transmission. Increased shock, vibration, and higher ...

Modeling and Scaling Limitations of SiGe HBT Low-Frequency Noise and Oscillator Phase Noise

Tang, Jin (2006-08-15)

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 ...

A Novel ROM Compression Technique and a High Speed Sigma-Delta Modulator Design for Direct Digital Synthesizer

Ghosh, Malinky (2006-05-15)

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 ...

On-wafer S-parameter Measurement Using Four-port Technique and Intermodulation Linearity of RF CMOS

Wei, Xiaoyun (2008-12-15)

Accurate on-wafer characterization of CMOS transistors at extremely high frequencies, e.g. above 60GHz, becomes critical for RFIC designs and CMOS technology development for millimeter wave applications. Traditional two-step ...

One Dimensional Zinc Oxide Nanostructures for Optoelectronics Applications: Solar Cells and Photodiodes

Cheng, An-jen (2008-08-15)

Several different morphologies of one-dimensional (1-D) ZnO nanostructured arrays can be controllably synthesized using novel thermal chemical vapor deposition at low temperatures. Well aligned and two dimensional periodic ...