Electromagnetic design for SuperSpec: a lithographically-patterned millimetre-wave spectrograph
- Barry, P. S.
- Shirokoff, E.
- Kovács, A.
- Reck, T. J.
- Hailey-Dunsheath, S.
- McKenney, C. M.
- Swenson, L. J.
- Hollister, M. I.
- Leduc, H. G.
- Doyle, S.
- O'Brient, R.
- Llombart, N.
- Marrone, D.
- Chattopadhyay, G.
- Day, P. K.
- Padin, S.
- Bradford, C. M.
- Mauskopf, P. D.
- Zmuidzinas, J.
Publication date
September 2012
DOI Publisher
Society of Photo-Optical Instrumentation Engineers Citation count (estimate)
6Abstract
SuperSpec is an innovative, fully planar, compact spectrograph for mm/sub-mm astronomy. SuperSpec is based on a superconducting filter-bank consisting of a series of planar half-wavelength filters to divide up the incoming, broadband radiation. The power in each filter is then coupled into titanium nitride lumped element kinetic inductance detectors, facilitating the read out of a large number of filter elements. We will present electromagnetic simulations of the different components that will make up an R = 700 prototype instrument. Based on these simulations, we discuss optimisation of the coupling between the antenna, transmission line, filters and detectors
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