3 July 2000 Novel low-cost technique to manufacture submillimeter corrugated feedhorns
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Proceedings Volume 4015, Radio Telescopes; (2000); doi: 10.1117/12.390443
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany
Abstract
Corrugated feedhorns are commonly used with reflector antennas, either for emission or reception purposes, because of their very low side lobe beam patterns, their very good E-H plane symmetry and their important bandwidth. Unfortunately, the electroforming technique that is generally used to fabricate them requires the machining of single-use mandrel. Direct milling of the horn is also possible, either in a single block or in a split block, but this also requires to machine each desired horn. At submillimeter frequencies, machining of small corrugations in a mandrel or in a block is costly. We present in this paper a cost-effective technique to fabricate helicoidal corrugated feed horns, which consists in machining one reusable mandrel and to mold as many horns as needed.
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Jean-Marie Munier, A. Maestrini, Morvan C. Salez, Matthieu Guillon, B. Marchand, "Novel low-cost technique to manufacture submillimeter corrugated feedhorns", Proc. SPIE 4015, Radio Telescopes, (3 July 2000); doi: 10.1117/12.390443; https://doi.org/10.1117/12.390443
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