Now showing items 1-10 of 28
Filter Design for Interference Cancellation for Wide and Narrow Band RF Systems
(Virginia Tech, 2016-06-19)
In radio frequency (RF), filtering is an essential part of RF transceivers. They are employed for different purposes of band selection, channel selection, interference cancellation, image rejection, etc. These are all ...
Design of a High Temperature GaN-Based Variable Gain Amplifier for Downhole Communications
(Virginia Tech, 2017-02-07)
The decline of easily accessible reserves pushes the oil and gas industry to explore deeper wells, where the ambient temperature often exceeds 210 °C. The need for high temperature operation, combined with the need for ...
A Two-mode Buck Converter toward High Efficiency for the Entire Load Range for Low Power Applications
(Virginia Tech, 2015-11-05)
In order to extend the battery life of smart cameras, it is essential to increase the efficiency of power converters, especially at light load. This thesis research investigated a power converter to supply power for the ...
A built-in self-test PLA generator
(Virginia Tech, 1991-01-15)
Double linked backbone ring interconnected network
(Virginia Tech, 1989-12-15)
The token ring has several advantages over other networks, especially under a heavy load. However, Bux and Grillo showed that all desirable characteristics of IEEE 802.2 and 802.5 protocols for a single token ring are ...
A High Temperature Wideband Low Noise Amplifier
(Virginia Tech, 2016-01-27)
As the oil industry continues to drill deeper to reach new wells, electronics are being required to operate at extreme pressures and temperatures. Coupled with substantial real-time data targets, the need for robust high ...
A High Temperature Reference Voltage Generator with SiC Transistors
(Virginia Tech, 2016-09-06)
Natural resources are always collected from harsh environments, such as mines and deep wells. Currently, depleted oil wells force the gas and oil industry to drill deeper. As the industry drills deeper, temperatures of ...
Power Converter Design for Maximum Power Transfer and Battery Management for Vibration-Based Energy Harvesting on Commercial Railcars
(Virginia Tech, 2015-06-24)
Although the locomotive of a train is energized, in general, other railcars are not. This prevents commercial rail companies from installing sensor equipment on the railcars. Thus, several different solutions have been ...
System Design of a High-Temperature Downhole Transceiver
(Virginia Tech, 2018-09-12)
The oil and gas industry, aerospace, and automotive industries are constantly pushing technology beyond their current operational boundaries, spurring the need for extreme environment electronics. The oil and gas industry, ...
On the design of reconfigurable ripple carry adders and carry save multipliers
(Virginia Tech, 1992-01-05)
<p>The fault location and reconfigurable designs of Ripple Carry (RC) adders and Carry Save (CS) multipliers are studied in this thesis. The proposed designs can locate a faulty cell and reconfigure the faulty array to ...