A broadband metal plate array antenna, radar, and wireless communication system

Abstract

The invention belongs to the technical field of microwave and millimeter wave antennas, and discloses a broadband metal flat panel array antenna, a radar, and a wireless communication system. The feed network layer and the upper radiation unit layer; there is a transition structure between the feed network layer and the feed network layer, and a step is introduced on the ridge of the ridge gap waveguide in the feed network layer for transition; the feed network layer and the radiation unit There is a transition structure between the layers, and a metal ridge is introduced at the port of the feed network layer to guide the energy transition. The invention uses an all-metal structure, and the simple three-layer metal plate is fixed by screws, which is convenient for assembly and use. The present invention adopts the double-layer gap waveguide as the feeding network, so that the overall structure of the antenna is compact and the profile is low, and wide bandwidth is realized. The invention uses a simple radiation unit, removes the air cavity, reduces the antenna section and realizes a wide frequency band in the millimeter wave frequency band.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter wave antennas, and in particular relates to a broadband metal plate array antenna, a radar and a wireless communication system. Background technique [0002] With the rapid development of wireless communication, the millimeter wave communication band has wide bandwidth, high speed, low delay, and good directionality, and has advantages that other technologies cannot replace; compared with other flat-panel antennas that use dielectric plates, all-metal structures are easier to process And manufacturing, not easy to damage, and less loss; Compared with reflective array and transmissive array antennas, flat panel antennas have a low profile, small size, and low cost, and are widely used in the communication field. Broadband panel antennas mainly include microstrip panel arrays, waveguide slot panel arrays, printed vibrator panel arrays, and non-standard horn standard arrays. They all...

AI Technical Summary

Problems solved by technology

[0007] (1) The existing millimeter-wave microstrip panel array antenna has a large loss

[0008] (2) The existing waveguide slot plate array has large volume and relatively narrow bandwidth

[0009] (3) The profile of the existing flat-panel horn array antenna is relatively high, and there are certain limitations in practical applications, so it is not suitable for miniaturized communication systems

[0015] Ordinary dielectric substrates will increase the loss as the frequency increases, which will affect the antenna efficiency, so using a pure metal structure of the flat panel array antenna is the best solution;

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