Date of Award

Spring 5-5-2017

Level of Access

Campus-Only Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Electrical and Computer Engineering

Advisor

David E. Kotecki

Second Committee Member

Donald M. Hummels

Third Committee Member

Nuri W. Emanetoglu

Additional Committee Members

Ali Abedi

Robert W. Meulenberg

Abstract

Wireless communication systems have seen tremendous advances in utilization, capabilities, and in the number and variety of devices that can be connected to networks. Despite the astounding pace at which this field is growing, the burgeoning demands placed on it warrant continuous innovation and research. The discipline of wireless communications has entered into a phase, where the focus has shifted from the interaction between people to the interaction between objects. This has led to the advent of a domain called the Internet of Things (IoT). The major focus of this research is on the hardware implementation of impulse-radio ultra-wide-band (IR-UWB) transmitters capable of transmitting data-rates exceeding 100 Mbps for IoT and other applications. This research addresses the design of transmitters to achieve maximum distance of transmission while staying with the FCC spectral limits. The major factors that limit the distance of transmission as the data-rate is varied are first analyzed. Then, the design, simulation, and measured results of three transmitters are presented. All transmitters were fabricated in 180 nm CMOS technology. The transmitters are BPSK modulated and work at a data rate of 250 Mbps with an overall efficiency of > 22%. The spectral efficiency was improved using a gaussian addition technique which also allowed for the introduction of a frequency notch to reduce interference with 5 GHz WiFi. The analysis, design considerations, simulations, and experimental results of all transmitters are described.

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