A wide-band smooth-walled feedhorn with low cross polarization for millimeter astronomy

Details A wide-band smooth-walled feedhorn with low cross polarization for millimeter astronomy A wide-band smooth-walled feedhorn with low cross polarization for millimeter astronomy

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010spie.7741e..63z&link_type=abstract

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V. Edited by Holland, Wayne S.; Zmuidzin

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a smooth-walled feedhorn with cross polarization and reflected power lower than -30 dB across the entire 30% bandwidth. A prototype feedhorn has been fabricated, and the wide-band, low-cross polarization performance has been demonstrated. The feedhorn has a circular aperture and monotonically narrows towards an input waveguide interface. This allows it to be manufactured by progressively milling the profile using a set of custom tools. This is especially useful in applications where a large number of feeds are desired in a planar array format. Such applications include astronomical cameras in millimeter waveband that require large arrays of detectors for future increases in mapping speed and sensitivity. Specifically, large arrays of feedhorns are well-matched to the problem of measuring the polarization of the cosmic microwave background to search for the faint signature of inflation, as they provide good beam control, the requisite sensitivity, and compatibility with low-noise bolometric detectors.

Affiliated with

Also associated with

No associations

Rating

A wide-band smooth-walled feedhorn with low cross polarization for millimeter astronomy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A wide-band smooth-walled feedhorn with low cross polarization for millimeter astronomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A wide-band smooth-walled feedhorn with low cross polarization for millimeter astronomy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-981777