Journal article
An FSS-Backed 20/30 GHz Circularly Polarized Reflectarray for a Shared Aperture L- and Ka-Band Satellite Communication Antenna
A shared aperture antenna for simultaneous operation at L- (1525 to 1661 MHz) and Ka-band (19.7 to 20.2 GHz and 29.5 to 30.0 GHz) is demonstrated. This stacked antenna consists of a Ka-band reflectarray antenna with a frequency selective surface (FSS) ground-plane above an L-band patch array antenna.
The reflectarray is based on the concentric dual split-loop element backed by a concentric dual-loop FSS element. The reflectarray comprises 80 × 80 elements and it is printed on a 40 ×40 cm2 Rogers 5880 substrate, while the L-band antenna is a 2 × 2 patch array. The reflectarray antenna has been manufactured at the Technical University of Denmark (DTU) and measured at the DTU-ESA Spherical Near-Field Antenna Test Facility.
The reflectarray provides a maximum directivity of 36.4 and 38.5 dBi at 20.0 and 29.8 GHz, respectively, and an aperture illumination efficiency in the two frequency bands up to 57% and 48%, respectively. There is very little degradation in the L-band patch array performance due to the reflectarray, and it provides a minimum directivity of 11.8 dBi over the L-band.
Language: | English |
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Publisher: | IEEE |
Year: | 2014 |
Pages: | 661-668 |
ISSN: | 15582221 and 0018926x |
Types: | Journal article |
DOI: | 10.1109/TAP.2013.2292692 |
ORCIDs: | Kim, Oleksiy S. and Breinbjerg, Olav |
Fields, Waves and Electromagnetics antenna testing frequency selective surfaces loop antennas microwave antenna arrays reflectarray antennas satellite communication
Antenna arrays Antenna measurements Antenna radiation patterns Arrays Concentric dual split-loop element DTU-ESA FSS-backed circularly polarized reflectarray Frequency selective surfaces Ka-band L-band Rogers 5880 substrate Technical University of Denmark aperture illumination concentric dual split-loop element concentric dual-loop FSS element frequency 1525 MHz to 1661 MHz frequency 19.7 GHz to 20.2 GHz frequency 29.5 GHz to 30.0 GHz frequency selective surface frequency selective surface (FSS)-backed reflectarray ground-plane patch array antenna reflectarray antenna satellite communication antenna shared aperture antenna spherical near-field antenna test facility stacked antenna