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Improved multi-beam unit layout and orthomode transducers for FAST |
| YU Jinglong1,2, LIU Hongfei1,2, GAN Hengqian1, CAO Yang1 |
1. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China |
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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.
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| Keywords
multi-beam antenna
feed
orthomode transducer
radio telescope
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Issue Date: 19 October 2022
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2022,
Vol. 62
