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Abstract: A preliminary study concerning the design of a simultaneous multibeam antenna system is addressed. The exploitation of radiating elements with different radiation patterns is at the basis of ...

Abstract: A bidirectional multibeam transmit-reflect-array (TRA) antenna has been proposed for the space–air–ground–sea integrated network (SAGSIN). The TRA consists of alternating transmission ...

Scientists have long been probing the universe to determine how elements came together to form planets and (at least in Earth’s case) gave rise to life. One disconnect was that the universe contained ...