Quad-Ridge Flared Horn feed design for Radio telescope receiver system Using a Genetic Algorithm

Ma, Y.; Yu, J.L.; Pang, F.; See, C. H.

Abstract

Future broadband radio telescopes require broadband feeds for reflector antennas, and many new broadband feed technologies have gained substantial progress to satisfy the touch specifications for future radio telescope projects, such as the square kilometer array [1]. It has been noticed that, antenna efficiency becomes an important characterization for Radio telescope. This paper represents Quad-Ridge Flared Horn feed for SKA 1-mid Array at Band 3 1.65-3.05GHz for Radio telescope Feed system. The idea of this design is to decrease the cost of large arrays, by reducing the number of expensive cryogenic receiver required on thousands of antennas. A dual polarized Quad-Ridge Flared Horn feed for reciver systems is proposed. The Genetic Algorithm optimization scheme and high=frequency structure simulator software have been applied to the design for achieving a low reflection coefficient, a main lobe with near-constant symmerical beamwidth, and an aperture efficiency higher than 60% over 1.65-3.05 GHz are realized across the bandwidth.

• Presentation Conference Type: Conference Paper (Published)
• Conference Name: URSI Asia-Pacific Radio Science Conference
• Start Date: Aug 21, 2016
• End Date: Aug 25, 2016
• Acceptance Date: May 16, 2016
• Publication Date: Aug 21, 2016
• Deposit Date: May 29, 2019
• Pages: 1602-1605
• ISBN: 9781467388016
• Keywords: Quad-Ridge Flared Horn; beamwidth constant; aperture efficiency
• Public URL: http://researchrepository.napier.ac.uk/Output/1836829
• Publisher URL: http://toc.proceedings.com/32049webtoc.pdf