Abstract: Currently, the trend of group use of unmanned aerial vehicles (UAVs) is actively developing. This allows to significantly increase their efficiency due to coverage of larger areas, ...

Abstract: In this paper, the design of a Ka-band 512-element transmit switchable circularly polarized planar phased array is presented. To meet with the low cost and low profile characteristics, the ...

The periodic table contains elements that range from incredibly common to almost impossible to find. Some exist only in tiny traces or appear for mere moments before disappearing. The rarest elements ...

In October 2002, five days before his 17th birthday, Wayne Rooney burst onto the scene with a last-minute winner for Everton against Arsenal at Goodison Park and never looked back. When the same teams ...