Analysis of two ALMA front end receiver channels using physical optics

Statistics – Applications

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

The Atacama Large Millimetre Array will be a single research instrument composed of up to 50 high precision antennas, located at the Chajnantor plain in the district of San Pedro de Atacama, 5000m above sea level. Each ALMA telescope will contain 10 frequency channels/bands, ranging from 30 to 950GHz. Radiation from the secondary reflector is collected to the receivers of each wavelength channel through their accompanying front end optics. We present a full electromagnetic treatment of the front end optics for band 5 (163 - 211 GHz) and band 9 (602 - 720 GHz). A full quasi optical and physical optics analysis of the band 5 front end optics, using the antenna analysis tool, GRASP9 [1] is presented. Potential optimisation for the system is presented, namely a reflector edge taper and a comparison of two surface geometries. A similar analysis of the band 9 system is presented. Full electromagnetic simulations are compared with cold beam pattern measurements made at the Space Research Organisation of the Netherlands [2, 3]. Analysis of the effect of the polarizing grid is presented, with suggested modifications to improve cross polar levels.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Analysis of two ALMA front end receiver channels using physical optics 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 Analysis of two ALMA front end receiver channels using physical optics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of two ALMA front end receiver channels using physical optics will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1529382

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.