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Design and characterization for a high-temperature dual-band radome wall structure for airborne applications

机译：机载应用的高温双频天线罩壁结构的设计与表征

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摘要

Modern aircraft have reached higher and higher flight speed, resulting in the urgent demand of design and characterization for high-temperature airborne radomes, especially for those with dual-band or multi-band properties. In this paper, an A-sandwich radome wall structure made of quartz is designed for both centimeter and millimeter wave applications at high temperatures. Its transmission performance in the 4-40 GHz frequency range at ambient temperature to 800 degrees C is characterized by a broadband free-space microwave measurement system, which is mainly composed of a vector network analyzer, spot-focusing lens horn antennas, and a furnace for heating sample. A calibration method is proposed to eliminate the temperature-dependent distortion of microwave signals by the microwave-transparent walls of the furnace, and the errors caused by the wall position variations as well. Transmission measurements show that the radome wall structure is feasible for dual-band applications in the 4-10 GHz and 24-40 GHz frequency spans with the transmission efficiency higher than 70% at temperatures up to 800 degrees C, and demonstrate the effectiveness of the design method. It can be expected that the free-space microwave measurement system in conjunction with the proposed calibration method is capable of damage detection for aerospace structures under high-temperature conditions. (C) 2016 Elsevier Ltd. All rights reserved.
机译：现代飞机已经达到越来越高的飞行速度，导致对高温机载天线罩，尤其是具有双频或多频特性的天线罩的设计和特性提出了迫切的需求。本文针对石英和毫米波高温应用设计了一种由石英制成的A三明治天线罩壁结构。宽带自由空间微波测量系统的特点是，它在4-40 GHz频率范围内的环境温度至800摄氏度下的传输性能，该系统主要由矢量网络分析仪，点聚焦透镜号角天线和熔炉组成用于加热样品。提出了一种校准方法，以消除由炉子的微波透明壁引起的微波信号随温度变化的失真，以及由壁位置变化引起的误差。传输测量结果表明，天线罩壁结构对于4-10 GHz和24-40 GHz频率范围内的双频段应用是可行的，在高达800摄氏度的温度下，传输效率高于70％，并证明了天线罩的有效性。设计方法。可以预料，结合所提出的校准方法的自由空间微波测量系统能够在高温条件下对航空航天结构进行损伤检测。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Materials & design》 |2017年第1期|264-270|共7页
  • 作者

    Zhou Licheng; Liu Zejia; Tang Liqun; Pei Yongmao;

  • 作者单位

    South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510641, Guangdong, Peoples R China;

    South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510641, Guangdong, Peoples R China;

    South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510641, Guangdong, Peoples R China;

    Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Radome wall structure; High-temperature; Dual-band; Transmission measurement; Calibration;

    机译：天线罩壁结构;高温;双频;透射率测量;校准;

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