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ALMA band 2+3 (67-116 GHz) optics: Design and first measurements

Date Issued
2016
Author(s)
Gonzalez, A.
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Tapia, V.
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Reyes, N.
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Mena, F. P.
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Yagoubov, Pavel
DOI
Abstract
The ALMA telescope is one of the largest on-ground astronomical projects in the world. It has been producing great scientific results since the beginning of operations in 2011. Of all the originally planned bands, band 2 (67-90 GHz) is the last band to be implemented into the array. Recent technological progress has open the possibility to combine bands 2 and 3 (84-116 GHz) into a single wideband receiver. This paper describes the first efforts to design wideband optics which cover both bands, from 67 to 116 GHz, using a profiled corrugated horn and a modified Fresnel lens. First measurements were performed at ESO in Dec15-Jan16 and showed good agreement with simulations.
Coverage
IEEE International Symposium on Antennas and Propagation 2016
Start page
1195
Conferenece
2016 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
Conferenece place
Fajardo, Puerto Rico
Conferenece date
June 26 - July 1, 2016
Uri
Url
Ads BibCode
2016isap.conf.1195G
Rights
open.access
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