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Millimeter-Wave Profiled Corrugated Horns for the Quad Cosmic Background Polarization Experiment

Murphy, J. A. and Gleeson, E. and Cahill, G. and Lanigan, W. and O’Sullivan, C. and Cartwright, E. and Church, S. E. and Hinderks, J. and Kirby, E. and Thompson, K. and Rusholme, B. and Gear, W. K. and Maffei, B. and Ade, P. A. R. and Tucker, C. and Jones, B. (2005) Millimeter-Wave Profiled Corrugated Horns for the Quad Cosmic Background Polarization Experiment. International Journal of Infrared and Millimeter Waves, 26 (4). pp. 505-523. ISSN 0195-9271. doi:10.1007/s10762-005-4069-7. https://resolver.caltech.edu/CaltechAUTHORS:20191204-151845332

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Abstract

In this paper we report on the design and validation process for the profiled corrugated horn antennas, which feed the bolometer array of a cosmology experiment known as QUaD located at the South Pole. This is a cosmic background radiation polarization project, which demands precise knowledge and control of the optical coupling to the signal in order to map the feeble E- and B-polarization mode structure. The system will operate in two millimeter wavelength bands at 100 and 150 GHz. The imaging horn array collects the incoming signal via on-axis front-end optics and a Cassegrain telescope, with a cold stop in front of the array to terminate side-lobe structure at an edge taper of −20dB. The corrugated horn design process was undertaken using in-house analytical software tools, based on modal scattering, specially developed for millimeter -wave profiled horn antennas. An important part of the instrument development was the validation of the horn design, in particular to verify low edge taper levels and the required well-defined band edges. Suitable feed horn designs were measured and were found to be in excellent agreement with theoretical predictions.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1007/s10762-005-4069-7DOIArticle
ORCID:
AuthorORCID
Kirby, E.0000-0001-6196-5162
Rusholme, B.0000-0001-7648-4142
Ade, P. A. R.0000-0002-5127-0401
Additional Information:© 2005 Springer Science+Business Media, Inc. Received 27 December 2004; First Online 21 March 2005. The authors would like to express their thanks to the Irish Research Council for Science Engineering and Technology, Enterprise Ireland and Science Foundation Ireland for their support of this project through a Basic Research Grant, an International Collaboration Travel grant and an Investigator award. Emily Gleeson would also like to acknowledge the Daniel O’Connell Scholarship award funded by NUI Maynooth.
Funders:
Funding AgencyGrant Number
Irish Research Council for Science Engineering and TechnologyUNSPECIFIED
Enterprise IrelandUNSPECIFIED
Science Foundation, IrelandUNSPECIFIED
National University of Ireland, MaynoothUNSPECIFIED
Subject Keywords:profiled corrugated horn antennas; polarization; CMB
Issue or Number:4
DOI:10.1007/s10762-005-4069-7
Record Number:CaltechAUTHORS:20191204-151845332
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20191204-151845332
Official Citation:Murphy, J., Gleeson, E., Cahill, G. et al. Int J Infrared Milli Waves (2005) 26: 505. https://doi.org/10.1007/s10762-005-4069-7
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100191
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:04 Dec 2019 23:57
Last Modified:16 Nov 2021 17:52

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