Measurements of Beam Pattern Perturbation in Corrugated Feed Horn Arrays for CMB Observations

Details Measurements of Beam Pattern Perturbation in Corrugated Feed Horn Arrays for CMB Observations Measurements of Beam Pattern Perturbation in Corrugated Feed Horn Arrays for CMB Observations

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003exa....16..165d&link_type=abstract

Experimental Astronomy, Volume 16, Issue 3, pp.165-187

Astronomy and Astrophysics

Astronomy

2

Beam Pattern Measurements, Corrugated Feed Horn, Cosmic Microwave Background, Mutual Coupling

Scientific paper

An experimental study on the perturbation of the angular response of a W-band corrugated horn produced by nearby feeds, reproducing a typical situation of multi-feed arrays commonly used in high sensitivity Cosmic Microwave Background instruments, is reported in this paper. The effects for different positions of the scattering horn in the two principal polarisation planes were measured. We analyze the effects on both the side-lobe level and on the main beam. In particular, these results allowed us to validate design criterion for the multi-frequency focal array of the ESA PLANCK mission.

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