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 ...
Abstract: This article introduces a new concept of a phased array that can independently and simultaneously perform beamsteering across two frequency ranges: a lower band encompassing 24 GHz and a ...
Doctors Without Borders suspended all noncritical services at one of Gaza’s largest hospitals, the group said, alleging that the facility was being used by armed men, some masked, to intimidate and ...
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