Title page for ETD etd-05162006-161217


Type of Document Master's Thesis
Author Taylor, David Wyatt
URN etd-05162006-161217
Title Design of Ultrawideband Digitizing Receivers for the VHF Low Band
Degree Master of Science
Department Electrical and Computer Engineering
Advisory Committee
Advisor Name Title
Ellingson, Steven W. Committee Chair
Davis, William A. Committee Member
Raman, Sanjay Committee Member
Keywords
  • design methodology
  • VHF
  • receiver
  • wideband
Date of Defense 2006-05-09
Availability unrestricted
Abstract
The next generation of receivers for applications such as radio astronomy, spectrum

surveillance, and frequency-adaptive cognitive radio will require the capability to digitize

very large bandwidths in the VHF low band (30 to 100 MHz). However, methodology

for designing such a receiver is not well established. The difficulties of this design are

numerous. There are various man-made interferers occupying this spectrum which can

block desired signals or spectrum, either directly or through intermodulation. The

receivers will typically use simple (i.e., narrowband) antennas, so the efficiency of power

transfer to the preamplifier needs to be carefully considered. This thesis takes these

design challenges into account and produces a seven step design methodology for direct

sampling wideband digitizing receivers. The methodology is then demonstrated by

example for three representative receivers. Finally, improvements to the analysis are

suggested.

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