An 84 Pixel All-Silicon Corrugated Feedhorn for CMB Measurements

Published

December 8, 2011

Author(s)

John P. Nibarger, James A. Beall, Daniel T. Becker, Joseph W. Britton, Hsiao-Mei Cho, Anna E. Fox, Gene C. Hilton, Johannes Hubmayr, Dale Li, Kent D. Irwin, Jeffrey L. Van Lanen, Jeff McMahon, Ki Won Yoon

Abstract

Silicon platelet corrugated feedhorn for cosmic microwave background (CMB) measurements in the mm wave (130 to 170 GHz) have been developed for deployment for the polarization sensitive upgrade to both the Atacama Cosmology Telescope (ACTpol) and the South Pole Telescope (SPTpol). We present fabrication developments and the first results of a prototype monolithic feedhorn array consisting of 84 horns. Measurements show good beam quality across the needed bandwidth, return loss of -24 dB, an insertion loss of -0.4 dB, and cross polarization of

Citation

Journal of Low Temperature Physics

Volume

167

Issue

3

Pub Type

Journals

Download Paper

DOI Link

Keywords

observational cosmology, millimeter wavelength optics, MEMs

Citation

Nibarger, J. , Beall, J. , Becker, D. , Britton, J. , Cho, H. , Fox, A. , Hilton, G. , Hubmayr, J. , Li, D. , Irwin, K. , Van, J. , McMahon, J. and , K. (2011), An 84 Pixel All-Silicon Corrugated Feedhorn for CMB Measurements, Journal of Low Temperature Physics, [online], https://doi.org/10.1007/s10909-011-0428-z (Accessed April 26, 2024)