Abstract:
In the contemporary landscape of communication systems, Microstrip Patch Antennas
(MPAs) have gained immense popularity owing to their low profile, cost-effectiveness, and
fabrication simplicity. In high-performance aircraft, spacecraft, satellite, and missile
applications, where size, weight, cost, performance, ease of installation, and aerodynamic
profile are constraints and low-profile microstrip antennas may be potent candidate. Despite
their widespread use, MPAs exhibit a notable drawback in the form of low gain response.
Researchers are actively engaged in overcoming this limitation, exploring diverse techniques
to enhance MPA performance for specific applications.
High gain antennas are particularly desirable in practical scenarios, providing extended
coverage compared to their low gain counterparts. Microstrip array antennas emerge as
promising candidates for achieving high gain, leveraging multiple radiating elements on a
single substrate for versatile wireless applications. This thesis delves into the background
and current state of the problem surrounding MPA gain limitations. Various strategies
reported in the literature to address these limitations include the use of parasitic patches,
thick substrates, multi-resonator techniques, conventional array techniques, large ground
planes, and stacked patches. However, each technique presents its own set of drawbacks,
such as increased antenna size, complexity in multilayer fabrication, and additional
impedance matching circuit requirements. Notably, conventional array antennas necessitate
impedance matching circuits and transmission lines for connecting array elements, leading to
bulkiness and increased internal losses, thereby compromising efficiency.
In response to these challenges, the thesis proposes the exploration of a novel technique
both-sided MIC. Operating at microwave frequencies, this technique holds promise in
mitigating the drawbacks associated with existing strategies. The thesis aims to investigate
the design and optimization of a Microstrip Array Antenna utilizing both-sided MIC for gain
enhancement. Through comprehensive analysis and experimentation, the goal is to establish
the efficacy of this innovative approach in achieving high gain while addressing the
limitations posed by traditional methods. The outcomes of this research are expected to
contribute significantly to the advancement of micro strip antenna technology, opening new
avenues for practical and efficient wireless communication systems.
