Abstract: This letter proposes a Ka-band low-profile tri-mode antenna mechanism based on anisotropic impedance surface (AIS) with magnetic dipole coupling TE1.5,0 resonance. The stack-patch, TM1,0 ...

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In the latest exchange, 205 prisoners of war have been returned from Russia and Ukraine, according to Moscow. The Kremlin's Ministry of Defence said the United Arab Emirates helped to mediate the ...

Its satellite constellation works by bouncing a radar beam off the surface of the Earth from approximately 550km (342 miles) in space to build a picture of what is happening on the ground from the ...