ISSTT Proceedings

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230 GHz sideband-separating mixer array

Authors:
Doris Maier
Abstract:
Since 2001 the Heterodyne Receiver Array, HERA, is installed at IRAM's 30m telescope in Spain. It consists of two arrays with 3x3 pixels for two orthogonal polarizations. The receiver is equipped with SSB backshort mixers covering an RF frequency range from 218 to 267 GHz with an IF band of 3.5 to 4.5 GHz. In the near future IRAM will replace this receiver by a new dual-polarization multi-beam receiver with 7x7 pixels. The receiver will be equipped with sideband-separating mixers covering an RF frequency range from 200 to 280 GHz with an IF band from 4 to 12 GHz. The RF quadrature couplers as well as the LO couplers will be realized as branchguide couplers and be integrated with the mixer blocks into one E-plane split-block. The DSB mixers will use Nb junction technology and the IF couplers will be custom made for the use at cryogenic temperatures. This paper presents the concept of the new array as well as the designs of the DSB mixers and the different couplers.
Categories:
SIS Receivers
Year:
2009
Session:
M2
Full-text:
Download a PDF of this paper.
Page Number(s):
14-18