Fig. 1 Block Diagram for Active Phase Array Radar Rx Signal Path
Fig. 2 Amplitude Weighting for Array antenna
Fig. 3 Rx Antenna amplitude distribution with Taylor weighting
Fig. 4 Sub-array structure of a quarter of the antenna
Fig. 5 Amplitude weighting Applied in Rx array antenna
Fig. 6 Modified Rx Antenna amplitude distribution with Taylor weighting
Fig. 7 Complementary weighting Factor in Digital Beam Former
Fig. 8 G/T Comparison between Fig. 4(a) and (b)
Fig. 9 ADC Dynamic Range & Loss vs. α (sigmain/h)
Table. 1 Rx Antenna Requirements for MFR
Table. 2 Characteristics of AD9461 ADC
Table. 3 Comparison between SA9 and SA4 in the case of Fig 5(a)
Table. 4 Comparison between SA9 and SA4 in the case of Fig 5(b)
참고문헌
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- H. M. Yi, J. H. Choi, and I. T. Han, "Development of the Frequency Synthesizer for Multi-function Radar," in Journal of the Korea Institute of Information and Communication Engineering, vol. 22, no. 8, pp. 1099-1106, Aug. 2018. https://doi.org/10.6109/JKIICE.2018.22.8.1099
- J. J. Lee, "G/T and Noise Figure of Active Array Antenna," in IEEE Transactions on Antenna Propagation, vol. 41, no. 2, pp. 241- 244, Feb. 1993. https://doi.org/10.1109/8.214619
- T. H. Kim, B. G. Choi, H. Y. Lee, and C. S. Cho, "Receiver Gain of Active Phased Array Radar-Dependence on ADC Characteristic," in Journal of the Korea Electromagnetic Engineering Society, vol. 20, no. 1, pp. 52-59, Jan. 2009. https://doi.org/10.5515/KJKIEES.2009.20.1.052
- W. L. Melvin, and J. A. Scheer, Advanced Principles of Modern Radar : vol. II Advanced Techniques, Edison, NJ: SciTech Publishing, 2014.
- Analog Device. Attenuators-Digital-SMT HMC472A Data Sheet [Internet]. Available: http://www.analog.com/en/products/hmc472a.html#product-overview.