Abstract: This letter presents a circularly polarized (CP) antenna based on cross-helix with a wide 3 dB axial ratio (AR) coverage. First, a twin-helix is utilized to attain a symmetrically ...

Think you know everything there is to know about antennas? Maybe so, but then again, there just might be a surprise or two in here. Antennas are metallic structures used to capture and transmit radio ...

Above is my first build of a helix antenna described in W6NBC's paper in QST. Roughly speaking it would fit in a 170cm sided cube, and it definitely fits inside the non-functional decorative GRP ...

For several years, the Helix has been the workhorse of the tournament scene, whether you need Mega imaging, side-imaging, or more. It’s the perfect combination of the features you need on a screen ...

No audio available for this content. On April 29, the European forest satellite “Biomass” was launched into space from Kourou aboard a European Vega-C rocket operated by Arianespace. The company ...

Agricultural machinery is revolutionising farming by automating tasks like planting, spraying, and harvesting with precision and efficiency. Central to their navigation and operation is the ...

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 ...