Dual-Resonant Stacked Linear Array of Cross-Slotted Patches for Small SAR Satellites

A cross-slotted linear array antenna of four stacked patches is proposed for X -band synthetic aperture radar (SAR) on a small satellite platform. Owing to the reliability, small size and mass restriction features of small satellites, the antenna is based on a thin dual-substrate topology with each...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2021-06, Vol.69 (6), p.3584-3587
Main Authors: Anim, Kyei, Shin, Goo-Hwan, Jung, Young-Bae
Format: Article
Language:English
Subjects:
<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">X -band
Antenna arrays
Antenna measurements
Antennas
Cavity back
cross-slotted patch
Feeds
Gain
Impedance
Input impedance
Linear arrays
Narrowband
Patches (structures)
Satellite antennas
Satellites
Small satellites
small synthetic aperture radar (SAR) satellite
Substrates
Synthetic aperture radar
thin substrate
Topology
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Summary:A cross-slotted linear array antenna of four stacked patches is proposed for X -band synthetic aperture radar (SAR) on a small satellite platform. Owing to the reliability, small size and mass restriction features of small satellites, the antenna is based on a thin dual-substrate topology with each element surrounded by metal vias to form a cavity-backed patch to result in a lightweight and high efficiency. Although inherently narrowband due to the thin substrate layer, cross-slotted patches were proposed to yield a dual resonance, and lower input impedance at the desired band to meet the SAR requirement. The fabricated prototype exhibits a peak gain of 12 dBi with a radiation efficiency of 84% at 9.44-9.87 GHz for \vert S_{11}\vert < -10 dB.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2020.3030534