Wide-beam anti-metal antenna for satellite communication

Abstract

The invention belongs to the field of satellite mobile communication, and particularly provides a wide-beam anti-metal antenna for satellite communication, which is used for solving the problem of communication interruption of the existing satellite communication antenna under the interference of a metal environment. The design of laminated slot coupling feeding is adopted, the back radiation and the forward radiation of the antenna are improved through the metal reflecting plate and the forward radiation plate so as to improve the gain, 90-degree self-phase shift is generated through the Wilkinson power divider, feeding is conducted on the rotationally symmetrical H-shaped slots, meanwhile, a metal aluminum ring is introduced to pre-compensate a metal environment, and the gain of the antenna is improved. The influence of the surrounding metal floor on the antenna is reduced, the metal reflecting plate and the conductive metal aluminum ring jointly form a magnetic dipole, and the magnetic dipole is complementary with a feed panel directional diagram serving as an electrode, so that a lobe is broadened, and the gain at a low elevation angle is improved; therefore, the antenna has the advantages of wide wave beam, good low-elevation circular polarization performance and metal resistance, and is more suitable for satellite communication in an actual scene.

Description

technical field [0001] The patent of the present invention relates to the field of satellite communications, in particular to a wide-beam anti-metal antenna for satellite communications. Background technique [0002] Broadband antenna refers to an antenna with a certain width of impedance bandwidth. However, there are many ways to widen the impedance bandwidth of the antenna, such as reducing the dielectric constant of the dielectric plate, increasing the thickness of the dielectric plate, adding short-circuit pins around the antenna, and adopting a multi-layer structure. As well as slotting the patch, etc. Among them, the slot-coupled antenna can satisfy a wide working frequency band and ensure a certain gain at the same time, and has certain application value in the field of satellite communication. [0003] As a front-end device for receiving electromagnetic signals, antennas have increasingly become necessary features of antenna devices under the premise of ensuring com...

AI Technical Summary

Problems solved by technology

In reality, these satellite-oriented antennas may often be installed in environments with metal surface characteristics such as submarines, airplanes, and automobiles. Therefore, considering the actual application scenarios, the antennas need to have certain anti-metal properties, otherwise they will not be used in practice. In the application of the antenna, it is inevitable that the gain fluctuation or even negative gain of the antenna will be generated at the ground elevation angle, and at the same time, the axial ratio of the antenna will be deteriorated, resulting in the interruption of communication. Therefore, the anti-metal characteristics of the antenna are increasingly affected. much attention

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