A Compact Filter-Bank Waveguide Spectrometer for Millimeter Wavelengths

作者:Bryan Sean*; Che George; Groppi Christopher; Mauskopf Philip; Underhill Matthew
来源:IEEE Transactions on Terahertz Science and Technology, 2015, 5(4): 598-604.
DOI:10.1109/TTHZ.2015.2433919

摘要

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 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.

  • 出版日期2015-7