Now showing items 1-10 of 153
A wide dynamic range high-q high-frequency bandpass filter with an automatic quality factor tuning scheme
(Georgia Institute of Technology, 2009-01-09)
An 80 MHz bandpass filter with a tunable quality factor of 16∼44 using an improved transconductor circuit is presented. A noise optimized biquad structure for high-Q, high- frequency bandpass filter is proposed. The quality ...
Low-Overhead Opportunistic Routing for Wireless Ad Hoc and Sensor Networks in a Fading Environment
(Georgia Institute of Technology, 2007-11-15)
The development of miniaturized radio and sensing technologies have enabled the deployment of large quantities of wireless sensors capable of forming multi-hop networks. Emerging applications of this technology such as ...
Ultra-wideband tunable circuit design using silicon-germanium heterojunction bipolar transistors
(Georgia Institute of Technology, 2010-05-20)
This thesis explores the critical advantages of using silicon-germanium (SiGe) HBTs for RF front-end design. The first chapter looks at the SiGe BiCMOS technology platform and its important performance metrics. The second ...
High performance radio-frequency and millimeter-wave front-end integrated circuits design in silicon-based technologies
(Georgia Institute of Technology, 2011-04-21)
Design techniques and procedures to improve performances of radio-frequency and millimeter-wave front-end integrated circuits were developed. Power amplifiers for high data-rate wireless communication applications were ...
Energy-Efficient Network Protocols for Wireless Sensor and Actor Networks
(Georgia Institute of Technology, 2006-08-15)
Wireless sensor networks (WSNs) have a wide variety of applications in civilian, medical and military applications. However, the nodes in such a network are limited to one type of action: sensing the environment. With ...
Reduced Complexity Sequential Monte Carlo Algorithms for Blind Receivers
(Georgia Institute of Technology, 2006-04-10)
Monte Carlo algorithms can be used to estimate the state of a system given relative observations. In this dissertation, these algorithms are applied to physical layer communications system models to estimate channel state ...
Orthogonal Frequency Division Multiplexing for Wireless Communications
(Georgia Institute of Technology, 2004-11-24)
OFDM is a promising technique for high-data-rate wireless communications because it can combat inter-symbol interference (ISI) caused by the dispersive fading of wireless channels. The proposed research focuses on techniques ...
Advanced Transport Protocols for Next Generation Heterogeneous Wireless Network Architectures
(Georgia Institute of Technology, 2004-04-12)
The revolutionary advances in the wireless communication technologies are inspiring the researchers to envision the next generation wireless networking architectures, i.e., Next Generation Wireless Internet (NGWI), ...
QoS concerned efficient video communications over wireless networks
(Georgia Institute of Technology, 2000-08)
Low Power Reconfigurable Microwave Circuts Using RF MEMS Switches for Wireless Systems
(Georgia Institute of Technology, 2005-05-31)
This dissertation presents the research on several different projects. The first project is a via-less CPW RF probe pad to microstrip transition; The second, the third, and the fourth one are reconfigurable microwave ...