A Multi-Band Circularly Polarized-Shared Aperture Antenna for Space Applications at S and X Bands

In this article, a compact multiband antenna design and analysis is presented with a view of ensuring efficient uplink/downlink communications at the same time from a single antenna for CubeSat applications. This design shares the aperture of an S-band slot antenna to accommodate a square patch ante...

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Bibliographic Details
Published in:Electronics (Basel) 2023-11, Vol.12 (21), p.4439
Main Authors: Kabir, Syed Salman, Khan, Mehedi Hassan, Latif, Saeed I.
Format: Article
Language:English
Subjects:
Antenna design
Antennas
Antennas (Electronics)
Apertures
Bandwidths
Circular polarization
Communications systems
Cubesat
Design
Design and construction
Downlinking
Electromagnetic waves
Gamma rays
Ground stations
High gain
Ionosphere
Patch antennas
Polarization
Satellite communications
Slot antennas
Space applications
Superhigh frequencies
Uplinking
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Summary:In this article, a compact multiband antenna design and analysis is presented with a view of ensuring efficient uplink/downlink communications at the same time from a single antenna for CubeSat applications. This design shares the aperture of an S-band slot antenna to accommodate a square patch antenna operating in the X-band. Shared aperture antennas, along with an air gap and dielectric loading, provided good gain in both frequency bands. The S-band patch had an S11 = −10 dB bandwidth of 30 MHz (2013–2043 MHz, 1.5%), and the X-band antenna demonstrated a bandwidth of 210 MHz (8320–8530 MHz, 2.5%). The Axial Ratio (
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics12214439