Abstract:
The dissertation is mainly divided into five chapters. Introduction to WLAN, microsrtip
antenna and main objectives of the thesis have already been expressed in Chapter 1. Chapter 2
provides some information about basic properties of antenna and the literature review done in
the process. Based on the literature review an antenna is taken for optimization. Optimization
is done by simulating the antenna with variable parameters. the effects of parametric study
have been summarized to understand the effect of different parameters on bandwidth,
resonance and return loss. A comparison with existing antennas and proposed antenna is also
briefly discussed in this chapter. Finally, conclusive discussion and scope for future works
Description:
In recent years, the current trend in commercial and government communication systems has
been to develop low cost, minimal weight, low profile antennas that are capable of maintaining
high performance over a large spectrum of frequencies. This technological trend has focused
much effort into the design of microstrip patch antennas. With a simple geometry, patch
antennas offer many advantages not commonly exhibited in other antenna configurations. For
example, they are extremely low profile, lightweight, simple and inexpensive to fabricate using
modern day printed circuit board technology, compatible with microwave and millimeter-wave
integrated circuits (MMIC) and have the ability to conform to planar and non-planar surfaces.
In addition, once the shape and operating mode of the patch are selected, designs become very
versatile in terms of operating frequency, polarization, pattern, and impedance. The variety in
design that is possible with microstrip antennas probably exceeds that of any other type of
antenna element. However, standard rectangular microstrip patch antenna also has the
drawbacks of narrow bandwidth. Researchers have made many efforts to overcome this
problem and many configurations have been presented to extend the bandwidth.
