Low frequency radiating unit and detachable multi-frequency base station antenna

Abstract

The invention provides a low-frequency radiation unit, including a dielectric substrate, a radiator, a feeding balun and a frequency selective surface structure; the radiating body is arranged on the dielectric substrate, the dielectric substrate is arranged on the feeding balun, and the feeding balun Set on the structure of the frequency selective surface, the upper end of the feeding balun is electrically connected to the radiator, and the lower end is electrically connected to the structure of the frequency selective surface; the structure of the frequency selective surface constitutes an open circuit for high frequency signals, and constitutes ground for low frequency signals structure. Thereby, the low-frequency radiation unit can effectively reduce the influence on the high-frequency radiation, and at the same time improve the flexibility of use; the present invention also provides a separable multi-frequency base station antenna, the reflection plate of which is provided with a plurality of high-frequency radiation A radiation unit and a plurality of the low-frequency radiation units; the frequency-selective surface structure of the low-frequency radiation unit is detachably connected to the reflector and located above the high-frequency radiation unit, so that the low-frequency radiation unit and the high-frequency radiation unit can be respectively Work independently.

Description

technical field [0001] The invention relates to the technical field of base station antennas for wireless communication, in particular to a low-frequency radiation unit and a detachable multi-frequency base station antenna. Background technique [0002] With the rapid development of mobile communication technology, the number of 5G base stations is increasing rapidly, and the problem of insufficient site resources is becoming increasingly apparent. For rapid deployment, 5G sites mainly add 5G antennas and equipment to the original 4G site resources, so multi-frequency base station antennas have become mainstream. Among them, the A+P base station antenna integrated with 4G and 5G (that is, active and passive integrated antenna) has more advantages in space size, wind load and management, and has a good development prospect, which is a trend in the future. [0003] The A+P base station antenna is a 4G and 5G integrated antenna, including an A (Active, active) antenna unit and...

AI Technical Summary

Problems solved by technology

The existing A+P base station antennas generally have a patchwork structure up and down, with the A antenna unit on the top and the P antenna unit on the bottom. In this form, the antenna size is often too long, resulting in excessive wind load; another implementation method is to The P antenna unit is installed on the reflector of the A antenna unit. Although this can reduce the antenna length, the A+P base station antenna can only work together and cannot be separated.

[0004] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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