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Proceedings Paper

Simulations for membrane-based HEB mixers in array configuration for SHAHIRA
Author(s): Jean Baubert; Morvan Salez; Harald F. Merkel; Patrick Pons; Yan Delorme; Benoit Lecomte
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Paper Abstract

We present in this paper the front-end design and the results of RF simulations, carried out with Microwave Studio (CST) and HFSS for SHAHIRA (Submillimeter Heterodyne Array for High-speed Radio Astronomy), a 4x4 heterodyne array at 2.5 THz and 4.7 THz. One can then observe 16 spatial positions at 2 frequencies. The design has been chosen to be quasi-optic, because of its simplicity, novelty and multi-pixels applicability. Pixels are made of Niobium Nitride HEB mixers with double-slot antennas, processed on 1 μm thick stress-less Si3N4/SiO2 membrane. The use of the membrane shows numerous advantages: for instance the use of the mixers at higher RF frequencies, a better power coupling efficiency or a solution for avoiding dielectric modes, losses and reflections. This work is supported by ESA and is a collaboration between LERMA, CHALMERS and LAAS. The Camera is expected to find applications, for SOFIA or CIDRE.

Paper Details

Date Published: 8 October 2004
PDF: 8 pages
Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.550041
Show Author Affiliations
Jean Baubert, Observatoire de Paris (France)
Morvan Salez, Observatoire de Paris (France)
Harald F. Merkel, Chalmers Univ. of Technology (Sweden)
Patrick Pons, Lab. for Analysis and Architecture of Systems (France)
Yan Delorme, Observatoire de Paris (France)
Benoit Lecomte, Observatoire de Paris (France)

Published in SPIE Proceedings Vol. 5498:
Millimeter and Submillimeter Detectors for Astronomy II
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington, Editor(s)

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