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http://dx.doi.org/10.6109/jkiice.2019.23.5.568

Design of Sub-array Receiver for Active Phase Array Radar  

Yi, Hui-min (Radar.PGM R&D Division, Hanwha Systems)
Kim, Do-hoon (Radar.PGM R&D Division, Hanwha Systems)
Han, Il-tak (Agency for Defense Development)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.23, no.5, 2019 , pp. 568-573 More about this Journal
Abstract
Modern Radars are evolving into MFRs which can search multiple targets simultaneously and then track them. Additionally they should be able to avoid some external jamming signals. Applying to these MFRs, Antennas should be able to perform DBF including to not only real-time beam steering but also multi-beam forming simultaneously. And they can cancel the beam at the specific direction. In this paper, we describe the implementation of sub-array type antenna hardware which can be applying DBF. Also we propose the modified amplitude aperture distribution for suppressing the side lobe level and explain the sub-array receiver design with amplitude tapering. It consists in making the amplitude weighting in 2 steps. In order to compare two weighting cases, we investigate the G/T performance for the array antenna. At the conclusion, we make a comparative study for the dynamic range of every sub-array receiver and present the hardware implementation that is more advantageous for sub-array alignment and calibration in DBF.
Keywords
MFR(Multi-Function Radar); Active Phase Array antenna; Sub-array receiver; DBF(Digital Beam Forming); ADC(Analog to Digital Converter);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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