Simulation and Testing of a Linear Array of Modified Four-Square Feed Antennas for the Tianlai Cylindrical Radio Telescope

Autor:	Catherine N. Steffel, Juyong Zhang, Tao Liu, Yougang Wang, Albert Stebbins, Aleksander J. Cianciara, Thomas Stucky, Jeffrey B. Peterson, Liu Chao, Jixia Li, Peter Timbie, Xuelei Chen, Christopher J. Anderson, Wing Lu, Huli Shi, Zhiping Chen, Jingchao Geng, Shijie Sun, Fengquan Wu
Rok vydání:	2017
Předmět:	Physics 010308 nuclear & particles physics business.industry Bandwidth (signal processing) Astrophysics::Instrumentation and Methods for Astrophysics Intensity mapping FOS: Physical sciences Astronomy and Astrophysics 01 natural sciences Methods observational Linear array Dual polarized Radio telescope Optics 0103 physical sciences Scattering parameters Radio interferometer Astrophysics - Instrumentation and Methods for Astrophysics business Instrumentation and Methods for Astrophysics (astro-ph.IM) 010303 astronomy & astrophysics Instrumentation Computer Science::Information Theory
Zdroj:	Journal of Astronomical Instrumentation.
ISSN:	2251-1725 2251-1717
DOI:	10.1142/s2251171717500039
Popis:	A wide bandwidth, dual polarized, modified four-square antenna is presented as a feed antenna for radio astronomical measurements. A linear array of these antennas is used as a line-feed for cylindrical reflectors for Tianlai, a radio interferometer designed for 21~cm intensity mapping. Simulations of the feed antenna beam patterns and scattering parameters are compared to experimental results at multiple frequencies across the 650 - 1420 MHz range. Simulations of the beam patterns of the combined feed array/reflector are presented as well. 15 pages, 15 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd01875d91b0b4b2ed952ab0b636115b https://doi.org/10.1142/s2251171717500039 Zobrazit plný text záznamu