ISSTT Proceedings

ISSTT Proceedings

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A horn-reflector antenna for high-performance submillimetre-wave applications

Authors:
S. Withington, G. Yassin, M. Buffey, C. Norden
Abstract:
In recent years, it has become clear that the submillimetre-wave part of the electromagnetic spectrum contains a wealth of information about the state and distribution of molecular and ionised gas in distant galaxies. Unfortunately, the spectral lines associated with these objects are broad and faint, and therefore particular care is required to ensure that they can be detected, and where appropriate mapped, in an efficient and straightforward manner. The design of extragalactic imaging arrays, as opposed to galactic imaging arrays, has already been considered in some detail. The important point is that the performance of individual pixels—noise temperature, bandwidth, aperture efficiency, stability, freedom from systematic baseline effects, etc.—should not be compromised merely in order to build an array. Indeed, what is required is a small, linear array of extremely high-performance detectors. In this paper, we describe a horn-reflector antenna which is ideal for small-format, high-performance imaging applications.
Categories:
Components, Materials
Year:
1996
Session:
5
Full-text:
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Page Number(s):
389-399