CN101924276B - 用于反射器天线的天线罩和遮罩壳体 - Google Patents

用于反射器天线的天线罩和遮罩壳体 Download PDF

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CN101924276B
CN101924276B CN201010188362.XA CN201010188362A CN101924276B CN 101924276 B CN101924276 B CN 101924276B CN 201010188362 A CN201010188362 A CN 201010188362A CN 101924276 B CN101924276 B CN 101924276B
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shade
retainer belt
retaining groove
reflector antenna
radome
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CN101924276A (zh
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朱奈德·赛德
马修·卢里
伊恩·雷尼尔森
斯蒂芬·西姆斯
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Kang Pu Science And Technology Ltd Co
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Andrew LLC
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/13—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/134—Rear-feeds; Splash plate feeds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49016—Antenna or wave energy "plumbing" making

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Abstract

一种用于反射器天线开口端的壳体，包括基本上柱状的遮罩，所述遮罩耦接到所述反射器天线的远端，所述遮罩与所述反射器天线的纵轴线基本上共轴。保持带耦接到所述遮罩的内径，靠近所述遮罩的远端。所述保持带设置有保持凹槽，所述保持凹槽径向向内向所述纵轴线开口。所述保持凹槽的底部径向向外延伸，超过所述遮罩的外径。天线罩支座在所述保持凹槽内。

Description

用于反射器天线的天线罩和遮罩壳体
相关申请交叉引用
本申请要求Junaid Syed、Matthew Lewry、Ian Renilson和Stephen Simms于2009年6月12日提交的题为“Radome and Shroud Enclosure for ReflectorAntenna”的美国实用新型专利申请No.12/484,123的优先权。
技术领域
本发明涉及微波反射器天线。更具体地说，本发明涉及用于反射器天线的天线罩(radome)和遮罩壳体，所述反射器天线具有改进的信号图像以及机械特性。
背景技术
反射器天线的开口端通常被天线罩闭合，所述天线罩耦接到反射器盘和/或从反射器盘延伸的柱状遮罩的远端。
天线罩提供环境防护并且改善天线的风力载荷特性。精确成形可以应用于天线罩，以补偿因存在天线罩而引入反射器天线信号路径中的阻抗不连续所产生的信号轨迹和/或反射效应。天线罩连接装置的边缘散射RF信号，使得信号图像退化。重要的是，与信号路径平行的边缘，诸如柱状遮罩的远端边缘，已知衍射该区域存在的信号能量，将不希望出现的后波瓣(backlobe)引入反射器天线信号图像中。
现有的天线信号图像后波瓣抑制技术包括为天线罩增加后波瓣抑制环，例如将天线罩周边进行金属化，正如共同拥有的2006年11月21日授予Syed等的题为“Reflector Antenna Radome with Backlobe Suppressor Ring andMethod ofManufacturing”的美国实用新型专利No.7,138,958所公开的那样，该专利文件通过引用而全文包含在本文中。但是，所需的金属化操作会增加制造复杂性和/或成本，包括配置成将遮罩牢固保持在反射器盘上而不存在不希望出现的反射边缘和/或扩大天线罩总体尺寸的复杂耦接装置。此外，涂覆在天线罩周边的金属化薄环层比较脆弱，需要加倍小心以避免运输和/或安装过程中发生损坏。
为反射器天线增加遮罩一般根据遮罩的长度来改善信号图像，但是也类似地引入了可观的成本，因为增加遮罩长度也增大了反射器天线的风力载荷，需要相应增大天线以及天线支撑结构的强度。
发明内容
反射器天线市场竞争已经将注意力集中于改善电气性能并使总体制造、库存、分销、安装和维护成本最低。因此，本发明的目标是提供一种用于反射器天线的天线罩和遮罩壳体，克服了现有技术中的缺陷。
附图说明
包含在本文中并构成说明书一部分的附图，例述了本发明的实施方式，其中附图中类似的附图标记指代相同特征或元件，并且可能并未对其所出现的每一幅图进行详细说明，所述附图连同以上给出的本发明的发明内容以及以下给出的实施方式的具体描述，用来解释本发明的原理。
图1是带有示例遮罩和天线罩壳体的反射器天线的简略等轴正视图；
图2是图1所示反射器天线的简略剖分侧视图，其中为了清楚而省略RF吸收材料；
图3是图2所示区域A的放大视图；
图4是图1所示反射器天线的等轴剖分侧视图；
图5是图4所示区域B的放大视图；
图6是图4所示区域C的放大视图；
图7是图1所示保持带弧形区段的简略等轴正视图；
图8是图1所示反射器天线的简略等轴后视图；
图9是图8所示区域D的放大视图；
图10是图1所示反射器天线等轴剖分侧视图；
图11是图1所述区域E的放大视图。
附图标记
1反射器天线壳体
3遮罩
5反射器天线
7远端
9反射器盘
11近端
13紧固件
15保持带
16夹子
17天线罩
19保持凹槽
21安装部分
23底部
25边缘
27部分
29RF吸收材料
31弧形区段
33耦接凸片
35端部扩口部
具体实施方式
反射器天线壳体1的第一示例实施方式在图1-11中示出。柱状遮罩3从反射器盘9的远端7基本上与反射器天线5的纵轴线共轴延伸。遮罩3的近端11例如经由机械紧固件13或类似部件耦接到反射器盘9的周边。保持带15可以耦接到遮罩3的内径，靠近遮罩3的远端7。闭合遮罩3腔体远端7的天线罩17支座在保持带15的保持凹槽19中。
保持带15的横截面在图3中显示地最清楚。保持带15的安装部分21与遮罩3共轴，尺寸设计成抵靠遮罩3的远端7的内径，例如借助多个紧固件13固紧，所述紧固件每一个螺纹连接到置于安装部分21上的各夹子16中保持凹槽19从安装部分21向外延伸，向反射器天线5的纵轴线开口。保持凹槽19的底部23的内径大于遮罩3的外径。保持凹槽19的宽度可以大致对应于天线罩周边的宽度，使得天线罩周边支座在保持凹槽19内并由其保持。
为了改善对保持凹槽19区域内的信号能量的抑制效果，保持凹槽19可以相对于安装部分21设置成深度大于保持凹槽19的宽度。就是说，凹槽底部23内径设置成内径比安装部分21内径大，大的量大于保持凹槽19的宽度此外，保持带15的径向向内边缘25可以设置有小于安装部分21内径的内径。从而，遮罩3的纵向长度可以减小，而不会不可接受地减小产生的反射器天线5的前后比/后波瓣信号图像。
如图4-6、10和11所示，RF吸收材料29可以涂覆到遮罩3的内径上，进一步减少沿着遮罩内径的RF信号反射。如果遮罩3以聚合物材料形成，则至少遮罩3未被RF吸收材料29覆盖的部分可以金属化以提供RF信号闭塞(signal block)。
保持带15还可以为遮罩3提供加强功能，使得遮罩3以节约成本的方式形成，例如由多个金属板和/或聚合物材料制成的部分27形成。为了简化制造过程，减少库存和运输成本，借助紧固件或类似部件将所述部分头对头耦接从而形成遮罩柱体，从而可以在安装点组装所述所述部分。类似地，RF吸收材料29可以机械地紧固到遮罩内径，允许形成可紧凑地存储和运输的配置，而且限制了损坏相对脆弱的RF吸收材料的风险。
保持带15可以形成C形环，或者作为可选方案，如图7最清楚地示出，形成多个保持带15弧形区段31，所述弧形区段紧固在一起，形成保持带15的环圈形状。如果保持带15由弧形区段31形成，则弧形区段31可以形成端部扩口部(flare)35，其中每个弧形区段31的端部部分可以支座在所述端部扩口部中并且彼此重叠。此外和/或作为替代方案，每个弧形区段31的端部部分可以设置有耦接凸片33，可以通过所述耦接凸片施加紧固件13，从而将弧形区段31彼此耦接，如图8-11最清楚地示出。
由于保持凹槽19与遮罩3隔离，所以天线罩17不与遮罩3接触。因此，保持凹槽19和天线罩17之间的配合特征对于遮罩3与保持带15之间的互相连接关系没有影响。确定天线罩周边与保持凹槽19之间配合类型的尺寸可以选择为干涉配合，使得天线罩17相对于保持带15无法移动，并且改善遮罩3和天线罩17的整体性，例如抵抗持续大风和/或阵风载荷的变形。作为可选方案，可以选择产生较松弛配合的尺寸，允许天线罩17在保持凹槽19内浮动和/或转动。较松弛的配合例如允许补偿所选天线罩17和保持带15材料之间不同的热膨胀特性。
由于保持凹槽19根据例如金属保持带15的强度，为天线罩提供了周边保持作用，所以天线罩17保持效果非常可靠，即使为天线罩17选择强度相对较低的材料和/或厚度时。此外，消除了形成在天线罩周边上的现有连接特征，大大简化了天线罩17以及遮罩远端的制造过程。
本领域技术人员应该理解，除了改善了反射器天线5的电气性能之外，反射器天线壳体1能显著提高制造、运输、安装和/或维护效率。
在前述描述中，已经论述了具有已知等同物的材料、比率、整数或部件，所以这些等同物也包含在本文内，正如具体论述它们一样。
虽然通过描述本发明的实施方式而例述了本发明，并且相当详细地描述了所述实施方式，但是并不意味着申请人将附带的权利要求书的范围约束或以任何方式限制于所述细节。本领域技术人员容易理解额外的优势和改动。因此，本发明更宽泛的方面并不限制于图中所示和文中所述的这些具体细节、典型设备、方法和例述示例。因此，可以在不脱离申请人总体发明构思的精神和范围的前提下，脱离所述细节。此外，应该理解，在不脱离由附带的权利要求书所限定的本发明的范围和精神的前提下，可以对本发明进行改进和/或改动。

Claims (10)

1.一种用于反射器天线开口端的壳体，包括：
柱状的遮罩，所述遮罩适配成耦接到所述反射器天线的远端，所述遮罩与所述反射器天线的纵轴线共轴；
保持带，所述保持带耦接到所述遮罩的内径，靠近所述遮罩的远端；
所述保持带设置有保持凹槽，所述保持凹槽径向向内向所述纵轴线开口；
所述保持凹槽的底部径向向外延伸，超过所述遮罩的外径；和支座在所述保持凹槽内的天线罩。
2.如权利要求1所述的壳体，其特征在于，所述保持带由多个弧形区段形成。
3.如权利要求1所述的壳体，其特征在于，所述保持凹槽的所述底部的直径比所述遮罩的外径大至少一个所述凹槽的宽度。
4.如权利要求1所述的壳体，其特征在于，所述保持带借助紧固件耦接到所述遮罩，所述紧固件通过所述遮罩的外径耦接到支座在所述保持带近端边缘上的夹子。
5.如权利要求1所述的壳体，其特征在于，所述天线罩不与所述遮罩接触。
6.如权利要求1所述的壳体，其特征在于，所述天线罩能在所述保持凹槽内移动。
7.如权利要求1所述的壳体，其特征在于，所述保持带的径向向内的边缘具有小于所述遮罩的内径。
8.如权利要求1所述的壳体，其特征在于，所述保持带的径向向内的边缘具有小于所述保持带近端的内径。
9.一种用于反射器天线开口端的壳体，包括：
柱状的遮罩，所述遮罩适配成耦接到所述反射器天线的远端，所述遮罩与所述反射器天线的纵轴线共轴；
耦接到所述遮罩的内径的RF吸收材料；
保持带，所述保持带耦接到所述遮罩的内径，靠近所述遮罩的远端，所述保持带由多个互联的弧形区段形成；
所述保持带设置有保持凹槽，所述保持凹槽径向向内向所述纵轴线开口；
所述保持凹槽的底部直径比所述遮罩的外径大至少一个所述凹槽的宽度；
所述保持凹槽的底部径向向外延伸，超过所述遮罩的外径；所述保持带的径向向内的边缘具有小于所述遮罩的内径；和
支座在所述保持凹槽内而不与所述遮罩接触的天线罩。
10.一种将壳体组装到反射器天线开口端的方法，包括步骤：
将多个部分耦接在一起，形成柱状遮罩；
将所述遮罩耦接到所述反射器天线远端，所述遮罩与所述反射器天线的纵轴线共轴；
将多个弧形区段围绕天线罩周边耦接在一起，形成保持带；
所述保持带设置有径向向内向所述纵轴线开口的保持凹槽，所述天线罩支座在所述保持凹槽内；和
将安装部分耦接到所述柱状遮罩的远端内径。
CN201010188362.XA 2009-06-12 2010-06-01 用于反射器天线的天线罩和遮罩壳体 Active CN101924276B (zh)

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US8077113B2 (en) 2011-12-13
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