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Mao, Chunxu and Gao, Stephen and Rommel, Tobias (2017) Low-Profile Aperture-Shared X/Ka-band Dual-Polarized Antenna for DBF-SAR Applications. In: 2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications, iWAT 2017, pp. 104-107. International Workshop on Antenna Technology, 2017-03-01 - 2017-03-03, Athens, Greece. doi: 10.1109/IWAT.2017.7915329.
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Abstract
In this paper, a novel low profile aperture-shared X/Ka-band dual-polarized antenna array is proposed for space-borne digital beamforming (DBF) synthetic aperture radar (SAR) applications. To begin with, the DBF concept and its operation mechanism for SAR system are discussed. In this work, every 2 × 2 Ka-band elements are combined as a subarray and connected to a channel while each one X-band element is connected to a channel. Then, a novel slot-antenna based on substrate-integrated-cavity (SIC) is proposed. The resonant frequency can be controlled by adjusting the length of the U-shaped slot. To share a same aperture, the X-band antenna is interlaced with the Ka-band subarray on the same plane. To verify the concept, an antenna operating at 9.6/35.75 GHz is designed, prototyped and tested. The results demonstrate good performance in terms of impedance matching, channel isolation, and cross polarization level. Such highly integrated low profile antenna can significantly reduce the potential cost of the DBF-SAR system.
| Item URL in elib: | https://elib.dlr.de/110099/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||
| Title: | Low-Profile Aperture-Shared X/Ka-band Dual-Polarized Antenna for DBF-SAR Applications | ||||||||||||||||
| Authors: |
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| Date: | 1 March 2017 | ||||||||||||||||
| Journal or Publication Title: | 2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications, iWAT 2017 | ||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||
| Open Access: | No | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||
| DOI: | 10.1109/IWAT.2017.7915329 | ||||||||||||||||
| Page Range: | pp. 104-107 | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | dual-band; dual-polarized; digital beamforming (DBF); low-profile; synthetic aperture radar (SAR) | ||||||||||||||||
| Event Title: | International Workshop on Antenna Technology | ||||||||||||||||
| Event Location: | Athens, Greece | ||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||
| Event Dates: | 2017-03-01 - 2017-03-03 | ||||||||||||||||
| Organizer: | IEEE | ||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||
| HGF - Program Themes: | Earth Observation | ||||||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||||||
| DLR - Program: | R EO - Earth Observation | ||||||||||||||||
| DLR - Research theme (Project): | R - Development of a mini-SAR | ||||||||||||||||
| Location: | Oberpfaffenhofen | ||||||||||||||||
| Institutes and Institutions: | Microwaves and Radar Institute > Radar Concepts | ||||||||||||||||
| Deposited By: | Rommel, Tobias | ||||||||||||||||
| Deposited On: | 02 Jan 2017 09:16 | ||||||||||||||||
| Last Modified: | 20 Jun 2021 15:48 |
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