High Performance Corrugated Feed Horns for Space Applications at Millimetre Wavelengths |
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| Authors: | F Villa M Sandri N Mandolesi R Nesti M Bersanelli A Simonetto C Sozzi O D'Arcangelo V Muzzini A Mennella P Guzzi P Radaelli R Fusi E Alippi |
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| Institution: | (1) IASF-CNR, Sezione di Bologna, Italy;(2) INAF – Osservatorio Astrofisico di Arcetri, Firenze, Italy;(3) Universitá degli Studi di Milano, Milano, Italy;(4) Istituto di Fisica del Plasma, CNR, Milano, Italy;(5) IASF-CNR, Sezione di Milano, Italy;(6) LABEN, Vimodrone, Milano, Italy |
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| Abstract: | We report on the design fabrication and testing of a set of high performance corrugated feed horns at 30, 70, and 100 GHz,
built as advanced prototypes for the Low Frequency Instrument (LFI) of the ESA Planck mission. The electromagnetic designs
include linear (100 GHz) and dual shaped (30 and 70 GHz) profiles. Fabrication has been achieved by direct machining at 30
GHz and by electro-formation at higher frequencies. The measured performances on side lobe and return loss meet the stringent
Planck requirements over the large (20%) instrument bandwidth. Moreover, the advantage in terms of main lobe shape and side
lobe levels of the dual profiled designs has been demonstrated.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | corrugated feed horns Cosmic Microwave Background (CMB) space projects |
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