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

Albert Stebbins; Aleksander J. Cianciara; Catherine N. Steffel; Chao Liu; Christopher J. Anderson; Fengquan Wu; Huli Shi; Jeffrey B. Peterson; Jingchao Geng; Jixia Li

arxiv: 1705.04435 · v1 · pith:34RTALLAnew · submitted 2017-05-12 · 🌌 astro-ph.IM

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

Aleksander J. Cianciara , Christopher J. Anderson , Xuelei Chen , Zhiping Chen , Jingchao Geng , Jixia Li , Chao Liu , Tao Liu

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Wing Lu Jeffrey B. Peterson Huli Shi Catherine N. Steffel Albert Stebbins Thomas Stucky Shijie Sun Peter T. Timbie Yougang Wang Fengquan Wu Juyong Zhang

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keywords feedantennaarrayradioantennasbeamcylindricalfour-square

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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.

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

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