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International Journal of Antennas and Propagation - Volume 2016 2016, Article ID 5357368, 12 pages -

Research ArticleDepartment of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Received 22 March 2016; Accepted 20 April 2016

Academic Editor: Herve Aubert

Copyright © 2016 Yubing Han and Luoqing Zhong. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The Five-Hundred-Meter Aperture Spherical Telescope FAST is a Chinese megascience project that aims to build the largest single dish radio telescope in the world. Given its multiple simultaneous beam formation, phased array feed PAF is widely used to extend the field of view and enhance the survey speed of the radio telescope. In this study, a broadband and low cost PAF element using cross-dipole antenna at L-band is designed based on the requirement of the FAST. The antenna is fed by two microstrip baluns which have high performance and is easy to manufacture compared to the traditional coaxial balun. A simple system model is also introduced to evaluate the PAF performance. The measured results of the fabricated element and the simulations of the system performance validate the effectiveness of element design.





Autor: Yubing Han and Luoqing Zhong

Fuente: https://www.hindawi.com/



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