Abstract: This paper theoretically investigates a quartering circular loop antenna composed of four identical arc elements with independent feed sources, operating in ionospheric plasmas at very low ...

Abstract: This paper presents the design, optimization, and comparative analysis of two compact antenna structures-a circular loop antenna and an annular ring monopole antenna-both operating at 900 ...

We’re sure all radio amateurs must have encountered the problem faced by [Alexandre Grimberg PY1AHD] frequently enough that they nod their heads sagely. There you are, relaxing in the sun on the ...