A corrugated circular horn of exceptional bandwith, spanning both bands 2 and 3 of ALMA radio telescope (67 − 116 GHz) is presented. Design, thanks to both a long transition region and an input matching non-standard waveguide section, achieves a very good return loss and polarization purity both in excess of 30 dB over a band of about 50%.
Design of a 67-116GHz Corrugated Circular Horn for the ALMA Radio Telescope / Nesti, Renzo; Pelosi, Giuseppe; Pilia, Simone; Selleri, Stefano. - STAMPA. - 2017:(2017), pp. 565-566. (Intervento presentato al convegno 2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2017 tenutosi a Manchester Grand Hyatt Hotel, usa nel 2017) [10.1109/APUSNCURSINRSM.2017.8072325].
Design of a 67-116GHz Corrugated Circular Horn for the ALMA Radio Telescope
Nesti, Renzo;Pelosi, Giuseppe;PILIA, SIMONE;Selleri, Stefano
2017
Abstract
A corrugated circular horn of exceptional bandwith, spanning both bands 2 and 3 of ALMA radio telescope (67 − 116 GHz) is presented. Design, thanks to both a long transition region and an input matching non-standard waveguide section, achieves a very good return loss and polarization purity both in excess of 30 dB over a band of about 50%.
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