Upgrade of EMIR´s Band 3 and Band 4 Mixers for the IRAM 30 m Telescope

Author

Maier, Doris ; Reverdy, Julien ; Billon-Pierron, Dominique ; Barbier, Arnaud

Author_Institution

Inst. de Radio Astron. Millimetrique, St. Martin d´´Heres, France

Volume

2

Issue

2

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

215

Lastpage

221

Abstract

The Eight Mixer Receiver (EMIR) is a multi-band millimeter wave receiver installed since 2009 at the 30 m telescope of the Institut de Radio Astronomie Millimetrique (IRAM) at Pico Veleta in Spain. In autumn 2011, Band 3 and Band 4 will be equipped with state-of-the-art sideband-separating mixers with 8 GHz intermediate frequency (IF) bandwidth. For Band 3 a side- band-separating mixer has been developed within the European project AMSTAR+ in order to replace the currently employed single-sideband mixer. The new mixer has an IF bandwidth twice as large as the current one, and two sidebands, thus doubling the continuum sensitivity of the receiver. The mixer currently installed in Band 4 will simply be upgraded to 8 GHz IF bandwidth by changing its IF components.

Keywords

millimetre wave mixers; millimetre wave receivers; radiotelescopes; EMIR Band 3 mixer; EMIR Band 4 mixer; European project AMSTAR+; IRAM telescope; bandwidth 8 GHz; eight mixer receiver; intermediate frequency bandwidth; multiband millimeter wave receiver; sideband separating mixer; size 30 m; Junctions; Magnetic resonance imaging; Magnetic tunneling; Mixers; Noise; Radio frequency; Temperature measurement; Millimeter wave receiver; sideband-separating mixers; superconductor-insulator-superconductor (SIS) mixers; wide IF band;

fLanguage

English

Journal_Title

Terahertz Science and Technology, IEEE Transactions on

Publisher

ieee

ISSN

2156-342X

Type

jour

DOI

10.1109/TTHZ.2011.2180609

Filename

6153420