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UQ Innovation Expo 2003 ITEE Innovation Expo 2002 ITEE Innovation Expo 2001 ITEE Public Web ITEE School Alumni| UQ Innovation Expo 2003 » Mid-Year Student Projects » Justin Joseph Paul |
Wide Band Linearly Tapered Slot Antenna
Student: Justin Joseph Paul
Supervisor: Nick Shuley
Category: Engineering Thesis Project - Communications
A Wide Band Linearly Tapered Slot Antenna (LTSA) acting as a receiving antenna used for identification of objects through measurement of pulses was experimentally designed and constructed. Since a simulated design along with an identical prototype was completed, results obtained for the S11 return loss, bandwidth and radiation patterns of both the simulated and measured results were evaluated.
The simulation of the Wide Band LTSA was done on a program called FEKO. A return loss of –48dB and a usable bandwidth of 66% was obtained for the simulated design whereas the prototype obtained a return loss of –39dB and a usable bandwidth of only 15%. There seem to be an alarming difference in the usable bandwidth and thus, we can conclude that a wide bandwidth was apparent only for the simulated design and not the prototype. The radiation patterns, however, produce almost similar results for both the simulated and measured designs. This proved that the signal is being transmitted in the same directions in both cases.
At the end of the thesis, a simulated design of a Wide Band LTSA was successfully constructed into a prototype and tested. The overall results obtained agreed, to a certain extent, with the research and theoretical background found in several journals on this thesis topic.