Dual-band antenna

Abstract

The invention discloses a dual-band antenna, which comprises a bottom plate reflecting surface, a first dielectric plate and a second dielectric plate, wherein the first dielectric plate and the second dielectric plate are arranged in an intersection manner and are arranged on the bottom plate reflecting surface; a first vertically polarized pole is arranged on the first dielectric plate; the first vertically polarized pole comprises a first radiator and first antenna ground; a second horizontally polarized pole, a third vertically polarized pole and a fourth vertically polarized pole are arranged on the second dielectric plate; the second horizontally polarized pole comprises a second radiator and second antenna ground; the third vertically polarized pole comprises a third radiator and third antenna ground; the fourth vertically polarized pole comprises a fourth radiator and fourth antenna ground; the first pole and the second pole form a dipole which works on a first frequency band; and the third pole and the fourth pole form the dipole which works on a second frequency band. According to the dual-band antenna, the interference among the poles can be avoided under the condition of not adopting an isolator; and meanwhile, the radiation efficiency of the antenna can also be ensured, so that the communication performance of the antenna is effectively improved.

Description

technical field [0001] The present invention relates to the field of antennas, and in particular, a dual-band antenna is designed. Background technique [0002] Currently commonly used antennas are all encapsulated in a casing, for example, the casing can be made of plastic or other materials. [0003] During installation and use, considering the actual environment and other factors, the size of the antenna housing should not be too large. Therefore, the size of the antenna inside the antenna housing will be limited. However, if the distance between the antenna poles is too close due to the limitation of the size of the antenna shell, the isolation between the poles will be reduced, thereby increasing the mutual interference of the poles, although the isolation between the poles of the antenna An isolator can improve the isolation and reduce interference, but the isolator will absorb the external radiation signal energy of the antenna, so it will reduce the radiation effici...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the design of the antenna in the related art cannot take into account the radiation efficiency and the mutual interference between the poles, the present invention proposes a dual-band antenna, which can effectively reduce the mutual interference between the poles while ensuring the signal radiation efficiency of the antenna

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