Optimal number of elements and element spacing of wide-band focal plane arrays for a new generation radio telescope

M. V. Ivashina, Mou Kehn Ng, Per Simon Kildal

研究成果: Conference contribution同行評審

3 引文 斯高帕斯(Scopus)

摘要

The use of Focal Plane Arrays (FPA) as feeds for reflector antennas constitutes a new-generation solution for future radio telescope systems. In this paper, we investigate one of two main factors affecting the overall performance of such FPA-fed reflector systems, which is characterized by the total aperture efficiency and the bandwidth over the Field-of-View. These are strongly influenced by the properties of both the reflector geometry and the FPA feed. The parameters that define the latter are the number of elements comprising the array, and the size of each element. The goal here is to provide insights into how these array parameters affect the total aperture efficiency and bandwidth. The second factor, namely, system noise temperature is not studied in this paper and will be addressed in a different publication. In the process of our study, an optimized FPA geometry has been determined for each of several considered reflector cases. The array element that is used to perform this study is the open-ended aperture of a hard rectangular waveguide (HRW). The computed results are obtained from a computer code based on a rigorous full-wave analysis that takes the important mutual coupling within the array into account.

原文English
主出版物標題2nd European Conference on Antennas and Propagation, EuCAP 2007
版本11961
DOIs
出版狀態Published - 1 十二月 2007
事件2nd European Conference on Antennas and Propagation, EuCAP 2007 - Edinburgh, United Kingdom
持續時間: 11 十一月 200716 十一月 2007

出版系列

名字IET Seminar Digest
號碼11961
2007

Conference

Conference2nd European Conference on Antennas and Propagation, EuCAP 2007
國家United Kingdom
城市Edinburgh
期間11/11/0716/11/07

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