Abstract
In this paper, we present the design and measurements of a 90 GHz prototype of a millimeter-wave channelizing spectrometer realized in rectangular waveguide for astronomical instrumentation. The device was fabricated using conventional high-precision metal machining, and the spectrometer can be tiled into a 2D array to fill the focal plane of a telescope. Measurements of the fabricated five-channel device matched well with electromagnetic simulations using HFSS and a cascaded S-matrix approach. This motivated the design of a 54-channel R=200 spectrometer that fills the single-moded passband of rectangular waveguide in the 130-175 GHz and 190-250 GHz atmospheric windows for millimeter-wave spectroscopic mapping and multi-object spectroscopy.
Original language | English (US) |
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Article number | 7120193 |
Pages (from-to) | 598-604 |
Number of pages | 7 |
Journal | IEEE Transactions on Terahertz Science and Technology |
Volume | 5 |
Issue number | 4 |
DOIs | |
State | Published - Jul 1 2015 |
Keywords
- Millimeter-wave devices
- Spectroscopy
- channel bank filters
- microwave filters
- spectroradiometers
ASJC Scopus subject areas
- Radiation
- Electrical and Electronic Engineering