Structure for improving E-plane coupling of base station antenna

Abstract

The invention discloses a structure for improving E-plane coupling of a base station antenna. The structure comprises a floor, decoupling metal columns and dual-polarized antenna units, the decoupling metal columns are perpendicular to the floor, the decoupling metal columns and the dual-polarized antenna units are arranged in multiple groups, the decoupling metal columns are located at the midpoints of the two dual-polarized antenna units, the height of the decoupling metal columns is one eighth of the wavelength corresponding to the working center frequency, and the diameter of the decoupling metal column is adjusted according to the port matching and radiation characteristics of each antenna after the metal column is actually added, so that the change of the return loss of the port of the original antenna does not exceed 1 decibel after the decoupling metal column is added, and the change of the gain of the directional diagram does not exceed 0.5 decibel. The invention relates to the field of mobile communication. E-plane coupling between surrounding antennas is effectively improved, the isolation degree of a port corresponding to E-plane coupling is improved to be more than 23 decibels, meanwhile, after the decoupling metal columns are added, the amplitude change of return loss of each antenna port is smaller than 1 decibel, the change of gain is smaller than 0.5 decibel, and the E-surface coupling of the threaded base station antenna is improved.

Description

technical field [0001] The invention relates to the field of mobile communications, in particular to the miniaturization design and low coupling design of 5G base station antenna arrays. Background technique [0002] On the base station side, there are generally only dozens of dual-polarized antenna units in the 4G era. In the 5G era, the number of base station antenna units has surged to 128, 192 and even 256. When 5G technology develops further, after entering the Beyond 5G (B5G) era, there are solutions with up to tens of thousands of antenna units. There are more evolution directions of new systems. The two new B5G antenna systems, the Extra Large Aperture Antenna (ELAA) and the Reconfigurable Smart Surface (RIS), also need to integrate a large number of more complex and dense antennas on one interface. . [0003] However, when various 5G and B5G antennas are actually deployed and applied, they will inevitably encounter space constraints. Whether it is a tower, the ou...

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Problems solved by technology

The wider mouth surface increases the volume and wind resistance of the antenna

The increase in volume will cause difficulties in transportation, storage a

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