| 摘要 |
A rotating antenna for radio frequency (RF) communication. The antenna comprises a pedestal and a rotating base supporting at least one antenna reflector and an RF transmission/reception unit, the pedestal and the rotating base being parallelly mounted, a rotary joint positioned to allow a transmission of radio frequency (RF) signals between the rotating base and the pedestal during a rotational motion of one relative to the other around a rotation axis, an encoder set to follow the rotational motion, a plurality slip rings positioned to encircle a vertical profile of the rotary joint between the pedestal and the rotating base so that an electric contact is maintained therebetween during the rotational motion, and an annular bearing positioned to radially encompass the encoder and the plurality slip rings around the rotation axis and to constrain the rotational motion. The rotary joint, the plurality slip rings, and the annular bearing are concentric and the rotary joint, the encoder, and the annular bearing being on a common horizontal plane. |
