IEEE - Aerospace and Electronic Systems - March 2022 - 31

Hossain et al.
REFERENCES
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Figure 14.
Comparison ofmeasured and simulated S11 performance.
bandwidth was 411, 2034-2445 MHz. The measured
reflection coefficient of the antenna is compared with the
simulated one in Figure 14, which shows a good agreement
between the simulated and measured results. The
measured impedance bandwidth is 100 MHz wider than
the simulated one. It appears that the fabricated antenna
became lossy due to the use of double-sided tape to attach
several antenna layers to each other, which contributed to
larger measured impedance bandwidth.
CONCLUSION
Compact CP antennas for CubeSats with wide AR
bandwidth and beamwidth are critical for effective
communication and science data download. A singly
fed planar microstrip antenna is also desired for small
satellite applications. This article presents stacked
ring-patch antennas with negative and hybrid perturbations
with wide angular beamwidths and AR bandwidths.
These features are important for ground station
access with increased coverage. These antennas can be
used with NASA's NEN and DSN for high-speed data
download in the S-band.
ACKNOWLEDGMENTS
This work was partially supported by the National Science
Foundation under Award AGS 1936537.
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MARCH 2022
IEEE A&E SYSTEMS MAGAZINE
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http://dx.doi.org/10.1109/LAWP.2019.2892097 http://dx.doi.org/10.1109/LAWP.2019.2892097 http://dx.doi.org/10.1109/ICMMT.2016.7762388

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