DBS antenna
    1.
    发明授权
    DBS antenna 失效
    DBS天线

    公开(公告)号:US4811031A

    公开(公告)日:1989-03-07

    申请号:US45367

    申请日:1987-05-01

    摘要: A DBS antenna comprises a support arm (10) which at its front end supports a converter/feed unit (12) and at its rear end is secured to a mounting bracket. The antenna dish (14) is mounted on the support arm (10), so that the dish (14) is supported by the arm (10) without mechanical loading from the converter/feed unit (12). The converter feed unit (12) may have a tapering cover portion (74) of sufficient electrical thickness to produce focussing of the signal into the waveguide feed.

    摘要翻译: DBS天线包括支撑臂(10),其在其前端支撑转换器/馈送单元(12),并且其后端固定到安装支架。 天线盘(14)安装在支撑臂(10)上,使得盘(14)由臂(10)支撑,而无需来自转换器/进料单元(12)的机械负载。 转换器馈送单元(12)可以具有足够电气厚度的锥形盖部分(74),以产生信号到波导馈送的聚焦。