SKALA, a log-periodic array antenna for the SKA-low instrument: design, simulations, tests and system considerations
SKALA, a log-periodic array antenna for the SKA-low instrument: design, simulations, tests and system considerations
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SKALA，用于 SKA-low 仪器的对数周期阵列天线：设计、模拟、测试和系统注意事项
DOI：
10.1007/s10686-015-9439-0
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发表时间：
2015
影响因子：
3
通讯作者：
Andrew Faulkner
中科院分区：
文献类型：
--
作者：
E. D. L. Acedo;N. Razavi;N. Troop;Nick Drought;Andrew Faulkner
非常苛刻的要求的SKA低仪器要求具有挑战性的天线设计，能够提供良好的性能，辐射方向图，阻抗匹配，极化纯度，成本，寿命等本文致力于发展（设计和测试的第一个原型）的有源超宽带天线元件的低频仪器的SKA射电望远镜。这里描述的天线元件和差分低噪声放大器最初被设计为覆盖以前的SKA低频带（70-450 MHz），但是现在旨在覆盖重新定义的SKA低频带（50-350 MHz），并且此外，天线能够利用当前设计执行高达650 MHz。该设计的重点是在宽视场（与天顶成+/− 45°）和低交叉偏振比下实现最大灵敏度。此外，元件的尺寸和成本必须保持在最低限度，因为数百万个这样的天线将需要以非常紧凑的配置部署用于整个SKA。因此，本文的主要重点是讨论各种设计的SKA低望远镜的影响。
The very demanding requirements of the SKA-low instrument call for a challenging antenna design capable of delivering excellent performance in radiation patterns, impedance matching, polarization purity, cost, longevity, etc. This paper is devoted to the development (design and test of the first prototypes) of an active ultra-wideband antenna element for the low-frequency instrument of the SKA radio telescope. The antenna element and differential low noise amplifier described here were originally designed to cover the former SKA-low band (70–450 MHz) but it is now aimed to cover the re-defined SKA-low band (50–350 MHz) and furthermore the antenna is capable of performing up to 650 MHz with the current design. The design is focused on maximum sensitivity in a wide field of view (+/− 45° from zenith) and low cross-polarization ratios. Furthermore, the size and cost of the element has to be kept to a minimum as millions of these antennas will need to be deployed for the full SKA in very compact configurations. The primary focus of this paper is therefore to discuss various design implications for the SKA-low telescope.
SKA AA-低前端开发（剑桥大学）
DOI：
10.1109/eucap.2012.6206593
发表时间：
2012
期刊：
--
影响因子：
--
作者：
De Lera Acedo E
通讯作者：
De Lera Acedo E
影响因子：
5.7
作者：
Thibault Clavier;N. Razavi-Ghods;François Glineur;D. González-Ovejero;E. de Lera Acedo;C. Craeye;P. Alexander
通讯作者：
Thibault Clavier;N. Razavi-Ghods;François Glineur;D. González-Ovejero;E. de Lera Acedo;C. Craeye;P. Alexander
影响因子：
3
作者：
N. Razavi-Ghods;E. D. L. Acedo;A. El-Makadema;P. Alexander;A. Brown
通讯作者：
N. Razavi-Ghods;E. D. L. Acedo;A. El-Makadema;P. Alexander;A. Brown