Metamaterial decoupling structure applied to far field isolation improvement between horn antenna arrays

Abstract

The invention provides a metamaterial decoupling structure applied to improvement of far-field isolation between horn antenna arrays. The horn antenna arrays comprise two horn antennas which are in central symmetry and are arranged in parallel in the direction of an electric field surface; the metamaterial decoupling structure is placed in a near field of the horn antenna and is fixed with the horn antenna through a nylon column; the metamaterial decoupling structure comprises a first layer of dielectric substrate, a second layer of dielectric substrate, a third layer of dielectric substrate and a fourth layer of dielectric substrate; and a plurality of split resonant rings with two sizes are etched on the surfaces of the first layer dielectric substrate and the third layer dielectric substrate, and a plurality of split resonant rings with the same size are etched on the surfaces of the second layer dielectric substrate and the fourth layer dielectric substrate. According to the metamaterial decoupling structure, the electromagnetic attenuation and secondary radiation characteristics of the electromagnetic metamaterial are utilized, the horizontal radiation component in the placement direction of the horn antenna array can be effectively reduced, and therefore far-field coupling between horn antenna units is effectively reduced, and the metamaterial decoupling structure has the good universality characteristic.

Description

technical field [0001] The present invention relates to the technical field of antennas, in particular to a metamaterial decoupling structure applied to improve far-field isolation between horn antenna arrays. Background technique [0002] With the rapid development of electronic technology, the demand for high power and high sensitivity of transceiver antennas is also increasing. When the antenna is in the transceiver mode, the transmitted signal enters the receiving antenna through spatial coupling, which will cause the receiving channel to fail to work normally, and may also cause the self-excitation of the receiving channel. If it is under high power conditions, it will even cause the front end of the receiving channel damage to the amplifier. Therefore, it is particularly important to improve the isolation between the transmitting and receiving antennas. [0003] However, most traditional decoupling methods are not suitable for reducing the far-field coupling between ...

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Problems solved by technology

[0004] The present invention aims to provide a metamaterial decoupling structure applied to improve the far-field isolation between horn antenna arrays, so as to solve the problem that the far-field isolation of horn antenna arrays placed at large intervals cannot meet the system requirements, and the existing decoupling methods do not Applicable Technical Questions

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