A Broadband Millimeter-Wave Waveguide Window: A Low-Cost Design for Environmental Protection
A Broadband Millimeter-Wave Waveguide Window: A Low-Cost Design for Environmental Protection
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DOI：
10.1109/tmtt.2018.2859311
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发表时间：
2018-08
影响因子：
4.3
通讯作者：
G. Kumar;Sibabrata Mondal;B. Biswas;D. R. Poddar
中科院分区：
文献类型：
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作者：
G. Kumar;Sibabrata Mondal;B. Biswas;D. R. Poddar
本文提出了一种用于保护元件免受环境影响的全w波段波导窗口。该窗口基于放置在矩形波导内的矩形介电块。提出了宽带性能的电气设计步骤，并采用了一种简单、经济有效的机械工艺流程来制造窗口。对四个不同的介质窗口进行了评估，结果表明它们的插入损耗小于0.3 db，回波损耗优于20 db：两个窗口在全w波段，而另外两个窗口在3ghz带宽。温度测试在- 40℃和+70℃下进行4h，湿度设置在+70℃下为95%。在温度范围内，最小插入损耗变化为±0.5 dB。为了检查窗口与毫米波组件的兼容性，在w波段开关的输入和输出端口测试了窗口。实验结果表明，该窗口具有低损耗特性，不存在鬼影模式。
In this paper, a full W-band waveguide window for the protection of components from the environment is presented. The window is based on rectangular dielectric block placed inside the rectangular waveguide. Electrical design steps for broadband performance are presented, and a simple cost effective mechanical process flow is employed for the fabrication of windows. Four different dielectric windows are evaluated, and they exhibited less than 0.3-dB insertion loss and better than 20-dB return loss: two windows over full W-band, whereas other two over 3-GHz bandwidth. Temperature testing is carried out for 4 h at −40 °C and +70 °C, and the humidity level is set at 95% at +70 °C. Minimum insertion loss variation of ±0.5 dB over the temperature range is observed. To check the compatibility of the windows with millimeter-wave components, a W-band switch is tested with the windows at its input and output ports. The experimental results show that the windows have low-loss characteristics and are free from ghost modes.