تلخیص
In satellite communication applications, patch
antennas design faces the challenge of lower bandwidth and small
gain. Many design approaches are proposed in the literature to
overcome this limitation. Furthermore, future
developments/trends in the field of satellite communication also
focus on the design of more efficient patch antennas. This research
work is focused on the enhancement of bandwidth, efficiency and
gain of patch antenna. Various techniques are proposed and
analyzed using computer based simulations to improve such
design requirements. The investigated design is based on a
hexagonal structure with a rectangular defect. Further in order to
investigate the design performance, three parasitic patches were
employed in its vicinity and defects were also created in the ground
plane. Preperm L380 substrate (with a dielectric constant: 3.8) was
selected, and for bandwidth expansion air hole was employed in
the substrate. Proposed design of antenna with dimensions of
24mm in length, 28mm in width and a thickness of 1.64mm was
simulated and analyzed for several parameters including return
loss, SWR with respect to voltage, efficiencies, Gain and
directivity. Proposed design bandwidth was enhanced from
3.74GHz to 4GHz in X and Ku band for satellite military
applications. Simulation results show an overall efficiency of 0.98
prior to and after the structural amendments in the proposed
design with a maximum gain of 6.46dB which make it suitable for
use in X and Ku band in satellite military applications
G. Ahmad, S.W.Shah, F. Ali, S. Ali. (2019) Simulation of Hexagonal Patch Antenna with three Parasitic Artifacts, Journal of Space Technology , Volume 9, Issue 1.
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