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    • 3. 发明申请
    • RADOME WALL DESIGN HAVING BROADBAND AND MM-WAVE CHARACTERISTICS
    • RADOME WALL设计有宽带和MM波特性
    • WO1992012550A1
    • 1992-07-23
    • PCT/US1992000146
    • 1992-01-09
    • NORTON COMPANY
    • NORTON COMPANYMACKENZIE, S., Benjamin
    • H01Q01/42
    • H01Q1/422
    • The invention describes a multi-layer radome construction (70) which may be termed a D-sandwich and allows excellent transmission efficiency over areas of the entire spectrum of DC to at least 100 GHz. The radome wall construction comprises a core layer (72) of low dielectric constant material bounded by intermediate layers (74, 76) of high dielectric constant material which themselves are bounded by additional layers (78, 80) of low dielectric constant material. The radome may be further provided with one or more protective surface coatings (82, 84) for certain environmental conditions, without destroying the desired transmission characteristics of the radome. The dielectric constant, loss tangent and thickness of the various materials in the multilayer construction of the invention are designed to provide excellent transmission efficiency over the frequency and angular range desired. The thicknesses of the various layers in the multi-layer construction are also designed to minimize insertion and return losses thereby minimizing loading of radar transmitters as well as being relatively insensitive to aspect angle and arbitrary wave polarization.
    • 本发明描述了一种多层天线罩结构(70),其可以被称为D-夹层结构,并且在整个DC频谱的区域至少100GHz的范围内具有优异的传输效率。 雷达罩壁结构包括由介电常数材料的中间层(74,76)界定的低介电常数材料的芯层(72),它们本身由低介电常数材料的附加层(78,80)限定。 雷达罩可以在某些环境条件下进一步设置有一个或多个保护性表面涂层(82,84),而不会破坏天线罩的期望的传输特性。 本发明的多层结构中的各种材料的介电常数,损耗角正切和厚度被设计成在所需的频率和角度范围内提供优异的传输效率。 多层结构中的各层的厚度也被设计成最小化插入和返回损耗,从而最小化雷达发射器的载荷以及对方位角和任意波极化相对不敏感。