Data di Pubblicazione:
2011
Citazione:
W-band prototype of platelet feed-horn array for CMB polarisation measurements / F. Del Torto, M. R. F. Bersanelli, F. Cavaliere, A. De Rosa, O. D’Arcangelo, C. Franceschet, M. Gervasi, A. Mennella, E. Pagana, A. Simonetto, A. Tartari, F. Villa, M. Zannoni. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 6:6(2011), pp. P06009.P06009.1-P06009.P06009.14.
Abstract:
We present the design and performance of a 2x2 prototype array of corrugated feed-
horns in W-band. The module is fabricated using a so-called “platelet” technique by milling Alu-
minum plates. This technique is suitable for low-cost and scalable high performance applications.
Room temperature Return Loss measurements show a low (< −30 dB) reflection over a 30% band-
width with a maximum matching of -42 dB at 100 GHz for all four antennas. Beam pattern mea-
surements indicate good repeatability and a low (-25 dB) sidelobe and crosspolarisation levels. This
work is particularly relevant for future Cosmic Microwave Background polarisation measurements,
which require large microwave cryogenic detector arrays coupled to high performance corrugated
feed horns.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
microwave antennas ; detector design and construction technologies and materials ;
instruments for CMB observations ; polarisation
Elenco autori:
F. Del Torto, M. R. F. Bersanelli, F. Cavaliere, A. De Rosa, O. D’Arcangelo, C. Franceschet, M. Gervasi, A. Mennella, E. Pagana, A. Simonetto, A. Tartari, F. Villa, M. Zannoni
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