TY - GEN
T1 - Noise temperature testing for the Hydrogen Intensity and Real-time Analysis eXperiment (HIRAX)
AU - Kuhn, Emily R.
AU - Saliwanchik, Benjamin R.B.
AU - Harris, Maile
AU - Aich, Moumita
AU - Bandura, Kevin
AU - Chang, Tzu Ching
AU - Chiang, H. Cynthia
AU - Crichton, Devin
AU - Ewall-Wice, Aaron
AU - Gumba, Austin A.
AU - Gupta, Neeraj
AU - Kesebonye, Kabelo Calvin
AU - Kneib, Jean Paul
AU - Kunz, Martin
AU - Moodley, Kavilan
AU - Newburgh, Laura B.
AU - Nistane, Viraj
AU - Naidoo, Warren
AU - Ölçek, Deniz
AU - Peterson, Jeffrey B.
AU - Refregier, Alexandre
AU - Sievers, Jonathan
AU - Ungerer, Corrie
AU - Sadr, Alireza Vafaei
AU - Van Dyk, Jacques
AU - Weltman, Amanda
AU - Wulf, Dallas
N1 - Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
PY - 2020
Y1 - 2020
N2 - This paper describes the design, implementation, and verification of a test-bed for determining the noise temperature of radio antennas operating between 400-800 MHz. The requirements for this test-bed were driven by the HIRAX experiment, which uses antennas with embedded amplification, making system noise characterization difficult in the laboratory. The test-bed consists of two large cylindrical cavities, each containing radio-frequency (RF) absorber held at different temperatures (300K and 77 K), allowing a measurement of system noise temperature through the well-known 'Y-factor' method. The apparatus has been constructed at Yale, and over the course of the past year has undergone detailed verification measurements. To date, three preliminary noise temperature measurement sets have been conducted using the system, putting us on track to make the first noise temperature measurements of the HIRAX feed and perform the first analysis of feed repeatability.
AB - This paper describes the design, implementation, and verification of a test-bed for determining the noise temperature of radio antennas operating between 400-800 MHz. The requirements for this test-bed were driven by the HIRAX experiment, which uses antennas with embedded amplification, making system noise characterization difficult in the laboratory. The test-bed consists of two large cylindrical cavities, each containing radio-frequency (RF) absorber held at different temperatures (300K and 77 K), allowing a measurement of system noise temperature through the well-known 'Y-factor' method. The apparatus has been constructed at Yale, and over the course of the past year has undergone detailed verification measurements. To date, three preliminary noise temperature measurement sets have been conducted using the system, putting us on track to make the first noise temperature measurements of the HIRAX feed and perform the first analysis of feed repeatability.
UR - https://www.scopus.com/pages/publications/85099784314
UR - https://www.scopus.com/pages/publications/85099784314#tab=citedBy
U2 - 10.1117/12.2560270
DO - 10.1117/12.2560270
M3 - Conference contribution
AN - SCOPUS:85099784314
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Ground-Based and Airborne Telescopes VIII
A2 - Marshall, Heather K.
A2 - Spyromilio, Jason
A2 - Usuda, Tomonori
PB - SPIE
T2 - Ground-Based and Airborne Telescopes VIII 2020
Y2 - 14 December 2020 through 22 December 2020
ER -