On the front-end design of mid-frequency aperture array for square kilometre array

被引：5
|
作者：
Zhang, Y. [1 ]
El-Makadema, A. [1 ]
Acedo, E. de Lera [2 ]
Benthem, P. [3 ]
Barth, S. [4 ]
Brown, A. K. [1 ]
机构：
[1] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[3] ASTRON Netherlands Inst Radio Astron, NL-7991 PD Dwingeloo, Netherlands
[4] Observ Paris, Stn Radioastron Nancay, F-18330 Nancay, France
来源：
EXPERIMENTAL ASTRONOMY | 2018年 / 46卷 / 02期
关键词：
Aperture array; Phased array; Polarization; SKA; ANTENNA; TELESCOPE; SKA;
D O I：
10.1007/s10686-018-9608-z
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Complementary to the conventional dish radio telescopes, aperture arrays provide a technically attractive approach to achieve a large field of view and flexibility in observational parameters e.g. Sky area vs. bandwidth. Designs of both aperture array elements and overall geometry for the SKA Mid Frequency Aperture Array are presented here, together with resulting trade-offs. The paper reports the latest developments of global efforts on the front-end design of Mid-Frequency Aperture Array, not attempting to make technology selections, as the priority of sciences and the time for implementing Mid-Frequency Aperture Array is yet to be fully confirmed. Different on-going front-end solutions are introduced, particularly crossed ring antenna array with a planar structure is explored in more detail as it is less known in the community. Key performances of the candidate front-end technologies are addressed by examining the prototypes. The objective of the collaborative study is to increase technology readiness for implementation of Mid-Frequency Aperture Array in the future.
引用
收藏
页码：357 / 380
页数：24
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