Surface wave antenna
    1.
    发明授权
    Surface wave antenna 失效
    表波天线

    公开(公告)号:US4689629A

    公开(公告)日:1987-08-25

    申请号:US424834

    申请日:1982-09-27

    CPC classification number: H01Q13/28 H01Q1/38

    Abstract: A surface wave microwave antenna is presented in which transmission or reception of microwave energy is effected by discontinuities in a dielectric body positioned between a central feeder element and a ground plane. When used as a transmitter, the central disc propagates surface waves in the dielectric body in expanding circles; and the discontinuities in the dielectric body act as radiating or scattering sites to couple the waves to free space. When used as a receiver, the reverse will occur.

    Abstract translation: 提出了一种表面波微波天线,其中微波能量的传输或接收是通过定位在中心馈线元件和接地平面之间的电介质体中的不连续性实现的。 当用作发射器时,中心盘在扩展圆中传播电介质体中的表面波; 并且介电体中的不连续性用作辐射或散射位置以将波浪耦合到自由空间。 当用作接收器时,会发生相反的反应。

    Structures comprised of fiber reinforced plastic
    2.
    发明授权
    Structures comprised of fiber reinforced plastic 失效
    由纤维增强塑料组成的结构

    公开(公告)号:US4656069A

    公开(公告)日:1987-04-07

    申请号:US762694

    申请日:1985-08-05

    Inventor: G. Robert Traut

    Abstract: Unitary hollow structures, for example radomes, comprised of fiber reinforced plastic are produced with a large percentage of the fibers being randomly oriented in directions essentially parallel to the wall surfaces of the structures and with at least one surface having grooves to reduce microwave reflection. The structures are produced by packing a layer of fiber filled polymeric material in powder form around a mandrel which may have a pattern of grooves or ridges in its outer surface. The mandrel and packed powder are subjected to isostatic pressing to properly orient the fibers and achieve a density increase and powder cohesion. The pressed structure is sintered and the outer surface subsequently machined to a finished contour.

    Abstract translation: 制造由纤维增强塑料组成的单一中空结构,例如天线罩,其中大部分纤维在基本上平行于结构的壁表面的方向上随机取向,并且至少一个表面具有凹槽以减少微波反射。 这些结构是通过将一层纤维填充的聚合物材料以粉末形式包裹在心轴上而制成的,所述心轴可在其外表面上具有凹槽或脊的图案。 对心轴和填充粉末进行等静压,以使纤维正确定向并实现密度增加和粉末粘结。 压制结构被烧结,并且外表面随后被加工成完成的轮廓。

    Radome structure and method of manufacture thereof
    4.
    发明授权
    Radome structure and method of manufacture thereof 失效
    天线罩结构及其制造方法

    公开(公告)号:US4615933A

    公开(公告)日:1986-10-07

    申请号:US597710

    申请日:1984-04-06

    Inventor: G. Robert Traut

    Abstract: A radome combines low dielectric constant and dissipation factor at microwave frequencies with mechanical strength and rigidity as well as resistance to ablation and rain erosion at hypersonic velocities in the range of Mach 4 to 6. Continuous filament glass fabric and/or strand is saturated with PTFE dispersion. Layers are applied to a mandrel and cold isostatically pressed. The pressed layer may be machined between applications and subsequent pressings. After all layers are applied and pressed, optionally including an outer ablation resistant random fiber reinforced PTFE composite, the densified structure is heat cycled above the crystalline melt point of the polymer to maximize mechanical properties.

    Abstract translation: 天线罩在微波频率下结合了低介电常数和耗散因数,具有机械强度和刚度,以及在4至6马赫范围内的超音速下抵抗消融和雨淋侵蚀。连续长丝玻璃织物和/或绞线用PTFE饱和 分散。 将层应用于心轴并进行冷静压。 压制层可以在应用和随后的压制之间加工。 在所有层被施加和压制之后,任选地包括外部消融耐磨随机纤维增强的PTFE复合材料,致密结构在聚合物的结晶熔点之上热循环以最大化机械性能。

    Method of manufacture of improved radome structure
    5.
    发明授权
    Method of manufacture of improved radome structure 失效
    改进天线罩结构的制造方法

    公开(公告)号:US4615859A

    公开(公告)日:1986-10-07

    申请号:US263191

    申请日:1981-05-13

    Inventor: G. Robert Traut

    Abstract: A radome being a unitary structure comprised of a fiber reinforced plastic is produced with a large percentage of the fibers being randomly oriented in a plane parallel to the inner surface of the radome. The radome is produced by packing a layer of fiber filled powder around a mandrel having its outer contour resemble the inner contour of the radome. The mandrel and packed powder are then subjected to isostatic pressing to properly orient the fibers. The radome is finished by sintering the powder and removing the finished form from the mandrel.

    Abstract translation: 产生由纤维增强塑料构成的整体结构的天线罩,其中大部分纤维在平行于天线罩内表面的平面内随机取向。 雷达罩通过将纤维填充的粉末层包裹在具有类似于天线罩的内部轮廓的外部轮廓的心轴上而制成。 然后将心轴和填充的粉末进行等静压,以使纤维正确定向。 雷达罩通过烧结粉末并从心轴移除成品形状来完成。

    Radome structure
    7.
    发明授权
    Radome structure 失效
    天线罩结构

    公开(公告)号:US4659598A

    公开(公告)日:1987-04-21

    申请号:US762712

    申请日:1985-08-05

    Inventor: G. Robert Traut

    Abstract: A radome being a unitary structure comprised of a fiber reinforced plastic is produced with a large percentage of the fibers being randomly oriented in a plane parallel to the inner surface of the radome. The radome is produced by packing a layer of fiber filled powder around a mandrel having its outer contour resemble the inner contour of the radome. The mandrel and packed powder are then subjected to isostatic pressing to properly orient the fibers. The radome is finished by sintering the powder and removing the finished form from the mandrel.

    Abstract translation: 产生由纤维增强塑料构成的整体结构的天线罩,其中大部分纤维在平行于天线罩内表面的平面内随机取向。 雷达罩通过将纤维填充的粉末层包裹在具有类似于天线罩的内部轮廓的外部轮廓的心轴上而制成。 然后将心轴和填充的粉末进行等静压,以使纤维正确定向。 雷达罩通过烧结粉末并从心轴移除成品形状来完成。

    Method of improving structures comprised of fiber reinforced plastic
    8.
    发明授权
    Method of improving structures comprised of fiber reinforced plastic 失效
    改善由纤维增强塑料构成的结构的方法

    公开(公告)号:US4623505A

    公开(公告)日:1986-11-18

    申请号:US342057

    申请日:1982-01-25

    Inventor: G. Robert Traut

    Abstract: A method of producing unitary hollow structures, for example radomes, comprised of fiber reinforced plastic with a large percentage of the fibers being randomly oriented in directions essentially parallel to the wall surfaces of the structures and with at least one surface having grooves to reduce microwave reflection is presented. The structures are produced by packing a layer of fiber filled polymeric material in powder form around a mandrel which may have a pattern of grooves of ridges in its outer surface. The mandrel and packed powder are subjected to isostatic pressing to properly orient the fibers and achieve a density increase and powder cohesion. The pressed structure is sintered and the outer surface subesquently machined to a finished contour.

    Abstract translation: 一种制造单一中空结构的方法,例如由具有大部分纤维的纤维增强塑料构成的天线罩,其方向基本上平行于结构的壁表面的方向被随机取向,并且至少一个表面具有凹槽以减少微波反射 被呈现。 这些结构是通过以心粉的形式填充纤维填充的聚合物材料层而制成的,心轴可以在其外表面上具有脊状凹槽的图案。 对心轴和填充粉末进行等静压,以使纤维正确定向并实现密度增加和粉末粘结。 压制结构被烧结,外表面被精加工成完成的轮廓。

    Window for broad bandwidth electromagnetic signal transmission, and
method of construction thereof
    9.
    发明授权
    Window for broad bandwidth electromagnetic signal transmission, and method of construction thereof 失效
    宽带电磁信号传输窗口及其构造方法

    公开(公告)号:US4613540A

    公开(公告)日:1986-09-23

    申请号:US658749

    申请日:1984-10-09

    Abstract: A window construction and method are presented for electromagnetic signal transmission having broad bandwidth capability plus excellent resistance to ablation, rain erosion and thermal shock. The window is constructed of an odd number of three or more (i.e., 3, 5, 7, etc.) layers of reinforced PTFE material, with the dielectric constant of each layer (other than the core layer which is selected) being equal to the square root of the product of the dielectric constants of the two bordering layers. In a three layer version, the outer layers each have a dielectric constant which is the square root of the dielectric constant of the center layer; or, stated conversely, the center layer has a dielectric constant which is the square of the dielectric constant of each of the outer layers.

    Abstract translation: 提出了具有宽带宽能力的电磁信号传输的窗口结构和方法,以及出色的抵抗消融,雨淋和热冲击的能力。 窗口由三层以上(即3,5,7等)的增强PTFE材料层构成,每层的介电常数(选择的核心层除外)等于 两个边界层的介电常数的乘积的平方根。 在三层版本中,外层各自具有中间层的介电常数的平方根的介电常数; 或者相反地,中心层具有介电常数,其是每个外层的介电常数的平方。

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