Compact television antenna system
    1.
    发明授权
    Compact television antenna system 失效
    紧凑型电视天线系统

    公开(公告)号:US4293861A

    公开(公告)日:1981-10-06

    申请号:US110493

    申请日:1980-01-08

    摘要: A highly compact and lightweight 82 channel all banded VHF-UHF television antenna having three antenna elements wherein each element is the identical physical length and each element includes two half sections. Each antenna element is separated a predetermined distance from each other element wherein the predetermined distance is substantially less than one-tenth of the shortest wave length in the VHF band. A first set of coils are utilized to electrically lengthen the halves of the two elements for reception in the VHF band and a second set of coils are utilized to provide proper delays between the signals received by each antenna element so that when the signals are combined the signals are substantially additive and in phase. The antenna system includes a weatherproof housing containing a rotor, a preamplifier, and electronic circuitry. A deloading mechanism is arranged around the housing to engage the circumference of each antenna element to provide stability under the driving forces that may occur in the atmosphere.

    摘要翻译: 具有三个天线元件的高度紧凑且重量轻的82通道全带VHF-UHF电视天线,其中每个元件具有相同的物理长度,并且每个元件包括两个半部分。 每个天线元件与每个天线元件彼此隔开预定距离,其中预定距离基本上小于VHF频带中最短波长的十分之一。 第一组线圈用于电延长两个元件的半部以在VHF频带中接收,并且第二组线圈用于在由每个天线元件接收的信号之间提供适当的延迟,使得当信号被组合时 信号基本上是相加的和同相的。 天线系统包括一个包含转子,前置放大器和电子电路的防风雨外壳。 在壳体周围布置卸载机构以接合每个天线元件的圆周,以在可能在大气中发生的驱动力下提供稳定性。

    Low wind load modified farabolic antenna
    2.
    发明授权
    Low wind load modified farabolic antenna 失效
    低风荷载修改的农业用天线

    公开(公告)号:US4295143A

    公开(公告)日:1981-10-13

    申请号:US121696

    申请日:1980-02-15

    IPC分类号: H01Q15/16 H01Q19/12 H01Q15/20

    CPC分类号: H01Q15/162

    摘要: A modified parabolic antenna exhibiting low wind load characteristics having a collapsible reflector boom and a plurality of reflector elements mounted thereon. The collapsible boom includes two symmetrical parabolically shaped half sections. A first and second series of thin substantially elongated rectangular shaped reflector elements are mounted to each boom in a predetermined spaced relationship. Each reflector element is identical to the other and is also parabolically curved.

    摘要翻译: 具有低风荷载特性的改进的抛物面天线具有可折叠反射器臂和安装在其上的多个反射器元件。 可折叠起重臂包括两个对称的抛物线形半部分。 第一和第二系列薄的基本上细长的矩形反射器元件以预定间隔的关系安装到每个起重臂。 每个反射器元件与另一个反射器元件相同,并且也是抛物面弯曲的。

    Satellite dish antenna apparatus
    3.
    发明授权
    Satellite dish antenna apparatus 失效
    卫星天线装置

    公开(公告)号:US4766443A

    公开(公告)日:1988-08-23

    申请号:US791292

    申请日:1985-10-25

    IPC分类号: H01Q15/16 H01Q15/14

    CPC分类号: H01Q15/162

    摘要: A satellite dish antenna having parabolic-shaped support ribs firmly engaging the sides of adjacent screen-mesh reflected petals along the entire longitudinal length of each petal. Each support rib having an upper reflective surface lying in the same plane as the surface of the reflective petal, under which is located a locking arrangement which engages adjacent reflective petals the entire length of the petal.

    摘要翻译: 卫星天线具有抛物线状的支撑肋,沿着每个花瓣的整个纵向长度牢固地接合相邻的筛网反射花瓣的侧面。 每个支撑肋具有与反射花瓣的表面位于同一平面中的上反射表面,在该反射表面下方设置有与花瓣的整个长度接合相邻反射瓣的锁定装置。

    Satellite dish antenna apparatus
    7.
    发明授权

    公开(公告)号:US4568945A

    公开(公告)日:1986-02-04

    申请号:US621069

    申请日:1984-06-15

    IPC分类号: H01Q15/16 H01Q19/12

    CPC分类号: H01Q15/162

    摘要: A satellite dish antenna having parabolic-shaped support ribs firmly engaging the sides of adjacent screen-mesh reflected petals along the entire longitudinal length of each petal. Each support rib having an upper reflective surface lying in the same plane as the surface of the reflective petal, under which is located a locking arrangement which engages adjacent reflective petals the entire length of the petal.

    Compact television antenna system
    8.
    发明授权
    Compact television antenna system 失效
    紧凑型电视天线系统

    公开(公告)号:US4308540A

    公开(公告)日:1981-12-29

    申请号:US232196

    申请日:1981-02-06

    摘要: A highly compact and lightweight 82 channel all band VHF-UHF television antenna having three antenna elements wherein each element is the identical physical length and each element includes two half sections. Each antenna element is separated a predetermined distance from each other element wherein the predetermined distance is substantially less than one-tenth of the shortest wave length in the VHF band. A first set of coils are utilized to electrically lengthen the halves of the two elements for reception in the VHF band and a second set of coils are utilized to provide proper delays between the signals received by each antenna element so that when the signals are combined the signals are substantially additive and in phase. The antenna system includes a weatherproof housing containing a rotor, a preamplifier, and electronic circuitry. A deloading mechanism is arranged around the housing to engage the circumference of each antenna element to provide stability under the driving forces that may occur in the atmosphere.

    摘要翻译: 一种高度紧凑且重量轻的82通道全频VHF-UHF电视天线,具有三个天线元件,其中每个元件具有相同的物理长度,并且每个元件包括两个半部分。 每个天线元件与每个天线元件彼此隔开预定距离,其中预定距离基本上小于VHF频带中最短波长的十分之一。 第一组线圈用于电延长两个元件的半部以在VHF频带中接收,并且第二组线圈用于在由每个天线元件接收的信号之间提供适当的延迟,使得当信号被组合时 信号基本上是相加的和同相的。 天线系统包括一个包含转子,前置放大器和电子电路的防风雨外壳。 在壳体周围布置卸载机构以接合每个天线元件的圆周,以在可能在大气中发生的驱动力下提供稳定性。