Cart (Loading....) | Create Account
Close category search window

Investigation on ALMA Band-4 Frequency-Dependent Cross-Polarization

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Gonzalez, A. ; Nat. Astron. Obs. of Japan (NAOJ), Mitaka, Japan ; Uzawa, Y.

An extensive measurement campaign of the Atacama Large Millimeter/sub-millimeter Array (ALMA) band-4 receiver has unveiled a strong frequency dependence of the cross-polarization performance, with peaks which do not meet receiver specifications. This unexpected behavior has been exhaustively investigated theoretically and by full-wave finite-element electromagnetic simulations. After ruling out fabrication and assembly defaults in several RF path components, the best explanation for the cross-polarization degradation at certain frequencies is provided by the effect of the cryostat infrared filters on the corrugated horn. The theoretical expressions derived in this analysis match all measurement results satisfactorily.

Published in:

Terahertz Science and Technology, IEEE Transactions on  (Volume:4 ,  Issue: 2 )

Date of Publication:

March 2014

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.