Improved multi-beam unit layout and orthomode transducers for FAST

YU Jinglong; LIU Hongfei; GAN Hengqian; CAO Yang

doi:10.16511/j.cnki.qhdxxb.2022.26.025

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Journal of Tsinghua University(Science and Technology) ›› 2022, Vol. 62 ›› Issue (11) : 1803-1808. DOI: 10.16511/j.cnki.qhdxxb.2022.26.025

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Improved multi-beam unit layout and orthomode transducers for FAST

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Abstract

Five-hundred-meter aperture spherical radio telescope (FAST) is a multi-disciplinary basic research platform that is used for a wide range of astronomy research. The L band 19 beam receiver is mainly used for large sky surveys and pulsar searches. The receiver plays an important role in the discovery of new pulsars and the study of fast radio burst (FRB). The design of the multi-beam feed front-end was analyzed to improve the multi-beam feed system layout and the orthogonal mode coupler. This paper describes the improvements and the corresponding test results. These design methods provide design and technical guidelines for the design and upgrading of large aperture antenna feed systems.

Key words

multi-beam antenna / feed / orthomode transducer / radio telescope

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YU Jinglong, LIU Hongfei, GAN Hengqian, CAO Yang. Improved multi-beam unit layout and orthomode transducers for FAST[J]. Journal of Tsinghua University(Science and Technology). 2022, 62(11): 1803-1808 https://doi.org/10.16511/j.cnki.qhdxxb.2022.26.025

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