Novel conical scanning antenna

Abstract

A novel conical scanning antenna comprises a parabolic face, a feed source and a sub face, and is characterized in that a motor and a crank shaft are included, the motor comprises a motor shaft, a first end of the crank shaft is connected with the motor shaft, an axis of the motor shaft coincides with an axis of the parabolic face, an installation seat is arranged on the top point of a concave face of the sub face, second end of the crank shaft stretches along the axis of the sub face and is arranged on the installation seat, and the sub face achieves offset-focus rotary conical scanning driven by the motor. Based on a classic clamping type antenna, communication in motion through off-focus rotation of the sub face is achieved, and the novel conical scanning antenna is simple in structure, easy to machine and debug, and low in product cost.

Description

technical field

[0001] The invention relates to radar tracking technology in satellite communication, in particular to the structure of a mechanical conical scanning antenna. Background technique

[0002] In satellite communication, in order to maintain communication while in motion, it is necessary to track the satellite continuously. The conical scanning antenna is a common technical solution to realize the above functions. The conical scanning antenna realizes the tracking of the target angle error information by generating a scanning beam that rotates away from the mechanical axis of the antenna. It usually adopts a circular parabolic antenna, and the feed source deviates from the focus of the parabolic antenna or adopts an asymmetrical feeding method to form a The center line of the beam (that is, the direction of the strongest radiation of the beam) forms a certain angle with the mechanical axis of the antenna (that is, the axis of rotation of the beam). When the fee...

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