Arcetri Technical Reports 4/2010
C-band circular corrugated horn design
L. Cresci(1), P. Curioni(1), V. Natale(1), R. Nesti(1), A. Orfei(2), D. Panella(1), J. Roda(2)
(1) INAF Osservatorio Astrofisico di Arcetri
(2) INAF Istituto di Radioastronomia
Abstract
In this report the authors present the design of a circular corrugated horn for a radio astronomy receiver operating in the C band, from 5.7GHz to 7.7GHz. The horn was made in two parts that can be combined in order to match the requirements of two different optical systems: one is the Gregorian configuration of the Sardinia Radio Telescope where the feed will operate and the other is the Cassegrain configuration of the Medicina Radio Telescope where the whole receiver will be first tested. To provide optimum sensitivity, a parametric study of the edge taper to maximize the antenna gain over system temperature was made in the case of the Sardinia Radio Telescope.
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