The design and characterization of a 300 channel, optimized full-band millimeter filterbank for science with SuperSpec

Karkare, K., Zmuidzinas, J., Wheeler, Jordan D., Reck, T., McGeehan, R., Mauskopf, P. ORCID: https://orcid.org/0000-0001-6397-5516, Leduc, Henry G., Glenn, J., Che, G., Barry, Peter S., Shirokoff, E., Hailey-Dunsheath, S., Bradford, Charles M. and Redford, Joseph G. 2018. The design and characterization of a 300 channel, optimized full-band millimeter filterbank for science with SuperSpec. Presented at: Event: SPIE Astronomical Telescopes and Instrumentation, Austin, Texas, 10-15 June 2018. Published in: Gao, Jian-Rong and Zmuidzinas, Jonas eds. Proceedings Volume 10708 Millimeter, Submillimeter, and Far-Infrared Detectors for Astronomy IX. Proceedings of SPIE. , vol.10708 Society of Photo-optical Instrumentation Engineers, 10.1117/12.2313666

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Abstract

SuperSpec is an integrated, on-chip spectrometer for millimeter and sub-millimeter astronomy. We report the approach, design optimization, and partial characterization of a 300 channel filterbank covering the 185 to 315 GHz frequency band that targets a resolving power R ~ 310, and fits on a 3.5×5.5 cm chip. SuperSpec uses a lens and broadband antenna to couple radiation into a niobium microstrip that feeds a bank of niobium microstrip half-wave resonators for frequency selectivity. Each half-wave resonator is coupled to the inductor of a titanium nitride lumped-element kinetic inductance detector (LEKID) that detects the incident radiation. The device was designed for use in a demonstration instrument at the Large Millimeter Telescope (LMT).

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Society of Photo-optical Instrumentation Engineers
ISSN:	0277-786X
Last Modified:	12 Sep 2023 15:00
URI:	https://orca.cardiff.ac.uk/id/eprint/155708

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