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This paper describes an array antenna system for lunar regolith penetrating radar (LRPR), which is an important payload onboard the lander of Chang'E-5. The array's proposed operational frequency range is from 1000MHz ∼ 3000MHz. It has 12 elements arrayed along their H plane. The elements are designed into a compact Vivaldi antenna with 1/4 elliptical slot in order to realize the need for ultra-wideband,...
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