Full-automatic controllable radar antenna device

Abstract

The invention discloses a full-automatic controllable radar antenna device, and belongs to the technical field of aerospace. The full-automatic foldable radar antenna comprises a signal enhancement unit, an excited unit, a reflection unit and a linear driving unit. Through sequential movement of two groups of electric push rods, the signal enhancement unit and the reflection unit are driven to stretch out and draw back respectively, and meanwhile, the reflection unit drives the active oscillator group of the excited unit to fold, so that not only can folding of radar antenna oscillators be realized, but also contraction of a main rod can be realized; and the large radar antenna is folded into a size structure which is convenient to transport and store, the length of the main rod is shortened to about half of the length when the main rod is unfolded, and the width of the main rod is only 4-5 times of the diameter of the main rod when the main rod is contracted. The full-automatic controllable radar antenna device has the advantages of being rapid in stretching and retracting, high in precision, capable of being self-locked and simple in structure; and all-weather automatic unfolding and folding of the large radar antenna can be achieved.

Description

technical field [0001] The invention belongs to the technical field of aerospace, and in particular relates to a fully automatic controllable radar antenna device. Background technique [0002] A radar antenna is a converter that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, or vice versa. It is a component used in radio equipment to transmit or receive electromagnetic waves. The Yagi antenna is a commonly used radar antenna, which is an end-fire antenna composed of a stimulated unit, a passive reflector and a passive director. A general Yagi antenna consists of a stimulated element, a passive reflector and three passive directors arranged in parallel. During use, a large receiving area and expanded size are often required, which makes storage and transportation inconvenient. At this stage, the contraction of the Yagi antenna is mainly done manually. It is time-consuming, laborious, and inefficien...

AI Technical Summary

Problems solved by technology

During use, a large receiving area and expanded size are often required, which makes storage and transportation inconvenient

At this stage, the contraction of the Yagi antenna is mainly done manually. It is time-consuming, laborious, and inefficient to fix the antenna vibrator on one side of the main pole through rotation. More importantly, the folded size is still large. Therefore, in order to reduce the operation It is necessary to design a fully automatic controllable radar antenna device to save time, improve operation efficiency, and optimize occupied space.

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