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http://dx.doi.org/10.9766/KIMST.2022.25.2.135

Design of Optimized Two Baseline Waveguide Slot Array Antenna for Interferometric Radar Altimeter  

Yoon, Nanae (Department of Specific Radar, Hanwha Systems)
Kim, Jihyung (Department of Specific Radar, Hanwha Systems)
Kim, Jinsu (Department of Millimeter Microwave Device, Eltronix)
Jang, Jonghun (The 1st Research and Development Institute, Agency for Defense Development)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.25, no.2, 2022 , pp. 135-143 More about this Journal
Abstract
In this paper, the compact waveguide slot array antenna for interferometric radar altimeter is proposed. The proposed antenna structure consist of corrugation structure which is applied between each channel to improve isolation, three-channel waveguide slot array antenna and feeder. In addition, to reduce the occurrence of phase ambiguity, the baseline spacing of the three-channel antenna is analyzed and the results are applied to the design. For compact design, reduced height and SMP connector structure are used and the dip brazing method which is the conjugation method after dipping to flux is used for the fabrication of the lightweight antenna. The measurement result of the proposed antenna shows less than 1.41 : 1 (VSWR) and 48.3 dBc (isolation). The antenna gain is higher than 20.2 dBi and the side lobe levels are lower than 18.8 dB (vertical plane) and 10.0 dB (horizontal plane).
Keywords
Waveguide Slot Array Antenna; Interferometric Radar Altimeter; Baseline Analysis; Corrugation; Dip Brazing;
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Times Cited By KSCI : 1  (Citation Analysis)
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