Array antenna

Abstract

The invention provides an array antenna which can reduce the side lobe energy overflow of an antenna radiation field type, comprising a plurality of grounding surfaces, a signal transmission element, two radiation conductors and a signal feed-in wire; a plurality of grounding surfaces comprise five grounding surfaces; wherein, the first grounding surface and the fifth grounding surface are arranged on the same plane; one side of the second grounding surface and the fourth grounding surface is respectively vertically connected with the edge at the near end of the first grounding surface and the fifth grounding surface and extends in parallel towards the same direction by a hole / trough respectively; the other side thereof is vertically connected with the third grounding surface; the signal transmission element passes through the hole / trough of the second grounding surface and the fourth grounding surface and is vertical to the second grounding surface; furthermore, two sides of the signal transmission element are respectively connected with the radiation conductor; the signal feed-in wire comprises a central conductor and an external conductor layer; the central conductor is connected with the signal transmission element; and the external conductor layer is connected with the third grounding surface. The array antenna can reduce the interference of the leakage energy of the signal transmission element on the antenna radiation field type so as to reduce the overflow of the side lobe energy and improve the intensity of the antenna radiation.

Description

【Technical field】 [0001] The invention relates to an array antenna, in particular to an array antenna which can simplify the manufacturing process and reduce the side lobe energy spillage of the antenna radiation pattern to improve the radiation performance of the antenna. 【Background technique】 [0002] The current ground plane array antenna adopts a flat ground plane and arranges radiating conductors above it. The radiating conductors are connected by signal transmission elements. The feed-in line with the central conductor and the outer conductor is responsible for transmitting high-frequency signals into the array. In the antenna, the central conductor is connected to the signal transmission element, while the outer conductor is connected to the ground plane. [0003] The high-frequency signal will leak part of the energy in the signal transmission element, resulting in energy loss. At the same time, since the signal transmission element of the current ground plane array...

AI Technical Summary

Problems solved by technology

[0005] Since the radiation conductor and the signal transmission element are connected in one body, but the distance to the ground plane is opposite, the radiation conductor and the signal transmission element must be located at different heights, which will cause difficulty in manufacturing and also It will make it difficult to adjust and match the impedance of the array antenna, thereby reducing product stability and increasing production costs

In addition, in the array antenna, if the distance between the two radiating conductors is too small, the isolation between the two radiating conductors will also decrease, that is, there will be interference between them, which will affect the radiation pattern of the antenna.

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