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In this paper, a special axial-mode quasi-tapered helical antenna with 1.9:1 bandwidth is presented. The diameter profile of this design consists of a conical bottom section for achieving wider bandwidth at lower frequency end and uniform top section for achieving higher gain at the higher frequency end. To support and protect the antenna element, a proliferated radome made of polylactic acid (PLA)...
This paper presents a high-gain 6–40 GHz circularly polarized antenna system designed for a 6U CubeSAT mission for monitoring RF emission from earth. The antenna system consists of three quasi-tapered helical antenna elements, operating at 6–11 GHz, 11–22 GHz and 21–40 GHz, respectively. Each antenna element is designed to produce an end-fire beam with its helical diameter varying along its axis to...
A four element spiral array was designed to operate continuously from 1100-1600 MHz with greater than 1 dBic peak realized gain and good upper hemispherical coverage (greater than -4.5 dBic for thetasles80deg). The array including its dielectric loading has a size of 3.5"(L) x 3.5"(W) x 0.8"(H). As such, it fits into the existing FRPA-3 footprint and radome. In addition, the array has...
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