Date of Award

8-31-2017

Document Type

Campus Access Thesis

Degree Name

Master of Science (MS)

Department

Physics, Applied

First Advisor

KC Kerby-Patel

Second Advisor

Maxim Olchanyi

Third Advisor

D.V.G.L.N. Rao

Abstract

The demand for low profile antennas has increased due to their vast applications in moving vehicles and ease of manufacturing. However designing a wide band low profile antenna is difficult due to the limitation of the physical size and height of an antenna. A potential solution to this problem is to incorporate a high impedance surface alongside the antenna. Current design techniques involve designing the high impedance surfaces and antenna separately; this causes tuning issues and therefore involves a great amount of trial and error. Furthermore, a lack of an accurate model has prevented widespread adoption of this new structure. Our motivation is to create an accurate and intuitive transmission line model for a microstrip antenna backed by a high impedance surface. This model will approximate the behavior of the structure. By modeling this structure as equivalent radiating slots, a closed form expression for the mutual admittance between equivalent radiating slots was developed which is essential for the development of this new model.

Comments

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