Realization of Wideband Hologram Compact Antenna Test Range by Linearly Adjusting the Feed Location

Realization of Wideband Hologram Compact Antenna Test Range by Linearly Adjusting the Feed Location
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线性调整馈源位置实现宽带全息紧凑型天线测试范围

DOI:
10.1109/tap.2014.2351072
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发表时间:
2014-08
影响因子:
5.7
通讯作者:
Raisan
Raisan
中科院分区:
计算机科学2区
文献类型:
--
作者:
Li Zhi Ping;Ala-Laurinaho.Juha;Du Zhou;Raisan

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基于全息图的小型天线测试范围(HCATR)对于毫米/亚毫米波频率的天线测量非常有吸引力。然而,由于全息图是一个频率敏感元件,HCATR的操作通常被限制在一个窄带。本文介绍了一种宽带HCATR,它可以通过线性调整馈电位置来实现。需要对位置进行调整,以近似补偿馈入波前曲线,该曲线与工作频率成正比。该理论在近轴条件下是成立的。为了在宽频带上获得可接受的安静区场质量,光圈需要具有较大的焦比。通过W频段(95 GHz)和D频段(170 GHz)的仿真和测量结果,验证了该思想,并研究了安静区的宽带性能。
Hologram-based compact antenna test range (HCATR) is very attractive for antenna measurement at mm/sub-mm wave frequencies. However, as the hologram is a frequency sensitive element, the operation of a HCATR is usually limited to a narrow band. This paper describes a wideband HCATR: It can be realized by linearly adjusting the feed location. The position needs to be adjusted for approximately compensating the wave front curve of the feed, which is proportional to the operating frequency. The theory can be conformed under the paraxial condition. For the acceptable quiet zone field quality over a wide band, the aperture needs to have a large focal ratio. The idea is verified and the wideband performance of the quiet zone is studied with the simulated and measured results at W band (95 GHz) and D band (170 GHz).
DOI: 10.1109/tim.2005.858126
发表时间: 2005-11
影响因子: 5.6
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