With a maximum forecast geomagnetic activity rating four out of a possible nine, between 6 p.m. and 6 a.m. U.S. Central Time, ...
Abstract: A quad-band printed quadrifilar helix antenna (QB-PQHA) with ultrawide half-power beamwidths (HPBWs) and 3 dB axial ratio beamwidths (ARBWs) for satellite communication applications on the ...
The then-head of U.S. Special Operations Command in March told lawmakers that the command had “established the Space Force ...
Abstract: This paper discusses the design of a quadrifilar conical helix-antenna (QCHA) intended to operate at the frequency of 2.4 GHz within the Industrial, Scientific, and Medical (ISM) band and ...