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。

    Satellite dish antenna apparatus
    2.
    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。

    Low wind load modified farabolic antenna
    5.
    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
    8.
    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.

    Antenna director and method therefor
    9.
    发明授权
    Antenna director and method therefor 失效
    天线导演及其方法

    公开(公告)号:US4398201A

    公开(公告)日:1983-08-09

    申请号:US244030

    申请日:1981-03-16

    IPC分类号: H01Q1/12 H01Q19/30 H01Q21/12

    CPC分类号: H01Q1/1228 H01Q19/30

    摘要: The improved director (10) of the present invention provides an apparatus and method for increasing the directive gain of an antenna (30), and more particular, for a director in the high VHF band region while reinforcing the low VHF band. The director (10) includes a first element (220) having two symmetrical half sections (222, 224) with inboard ends (240) of each of the half sections mounted to and insulated from the boom (20), a second element (210) having two symmetrical half sections (212, 214) with inboard ends (240) of each half section mounted to an insulated from the boom (20), a pair of opposing phasing lines (230) parallel to the longitudinal length of the boom (20) and separated from each other by a first predetermined distance (410) wherein each phasing line (230) is electrically interconnected with the inboard ends (240) of the first and second element half sections (212 and 222, 214 and 224) located on the same side as the boom (20). Each half section of the first element (220) is substantially one half-wavelength electrically long in the high VHF band and the second element (210) and substantially one half-wavelength electrically long in the high VHF band. The two elements (210 and 220) are substantially spaced at a guarter wavelength in the high VHF band. The capacitance existing between the phasing lines (230) provides sufficient tuning so that the resonating currents in the first half section (222) of the first element (220) and the second half section (224) of the first element (220) are substantially in phase and additive.

    摘要翻译: 本发明的改进的导向器(10)提供了一种用于增加天线(30)的指令增益的装置和方法,更具体地说,对于在VHF频带高区域中的导向器,同时加强低VHF频带。 导向器(10)包括具有两个对称半部分(222,224)的第一元件(220),其具有安装到悬臂(20)并与悬臂(20)绝缘的每个半部的内侧端部(240),第二元件 ),其具有两个对称的半部分(212,214),每个半部分的内侧端部(240)安装到与悬臂(20)绝缘的一对相对的相对的相对线(230),平行于悬臂的纵向长度 20)并且彼此分开第一预定距离(410),其中每个相位线(230)与位于所述第一和第二元件半部(212和222,214和224)的内侧端部(240)电互连 在与悬臂(20)相同的一侧。 第一元件(220)的每个半部分在高VHF频带和第二元件(210)中基本上为一半长的电长度,并且在高VHF频带中基本上为一个半波长的电长度。 在高VHF频带中,两个元件(210和220)基本上间隔开。 存在于相控线(230)之间的电容提供足够的调谐,使得第一元件(220)的第一半部分(222)和第一元件(220)的第二半部分(224)中的谐振电流基本上 同相和添加剂。

    Compact television antenna system
    10.
    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。