Abstract:
Technology has evolved constantly over the years where the demand of Microstrip Patch
Antenna (MPA) has been growing tremendously. This is mostly due to their versatility in
terms of possible geometries that makes them applicable for many different situations.
The lightweight construction and the suitability for integration with microwave integrated
circuits are basic advantages. Additionally the simplicity of the structures makes this type
of antennas suitable for low cost manufacturing. Besides all benefit, these antennas have
major drawbacks such as narrow bandwidth, low efficiency, and low gain. Recently Ku
band frequency range of (12-18) GHz has been studied vigorously for allocation of
satellite communication, which became the most demanding subject around the world in
last few decades. But researchers are facing difficulty to improve both bandwidth and
gain in same MPA under this band which leads to examine and investigate for further
enhancement. In last decade a new man made material has been discovered known as
metamaterial and it has already drawn attention to antenna researchers. This advance
material depicts unusual electromagnetic properties which are not available in nature,
such as negative permittivity (εr) and permeability (μr). Due to its amazing feature, it has
the capacity to enhance antenna characteristic rapidly. The primary objectives of this
thesis is to exploit these exceptional properties of metamaterial in designing suitable
MPA for better bandwidth and gain antenna characteristic that can operate under Ku
band. In this thesis a series of MPAs have been designed in chronological order to
achieve desirable objectives. Among them E slotted E shaped patch loaded with
metamaterial antenna (proposed antenna) shows better improved characteristics. The
intended design and feeding technique provides the antenna to operate at Ku band range
with approximately total 4.40 GHz bandwidth which covers 73.33% of this domain. The
proposed antenna resonates at 14.97 GHz with total field directivity 9.4 dBi. This thesis
also contains four particular Microstrip patch antenna design including proposed antenna
with a brief comparative study between them where effect of different antenna
parameters are studied.
