High-downdip electrically controlled base station antenna

Abstract

The invention discloses a high-downdip electrically controlled base station antenna. The antenna comprises a reflection board, an array, a phase shift mechanism and an adjusting mechanism, wherein the array is arranged on one side of the reflection board and is provided with multiple dual-polarized vibrators; the phase shift mechanism and the adjusting mechanism are arranged on the other side of the reflection board; the phase shift mechanism is provided with a first shunt-feed strip-shaped wire and a first medium board; the first shunt-feed strip-shaped wire is connected with the dual-polarized vibrators, and is provided with a tap and multiple conduction bands reversely extending from the edge of the tap; the first medium board is simultaneously overlapped on at least part of the reversely extended conduction bands; and the adjusting mechanism is connected with the first medium board so as to drive the first medium board to move in the extension direction of the conduction bands. The antenna has the advantages that: the first shunt-feed strip-shaped wire is provided with multiple reversely extended conduction bands and the first medium board is simultaneously overlapped on the reversely extended conduction bands, so that the first medium board is matched with the reversely extended conduction bands to form multiple parallel-connection phase shift units, thus the feeding network layout is simplified, the feeding loss is reduced, the benefit is increased and the bandwidth is broadened.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a base station antenna in the field of mobile communication. Background technique [0002] In a mobile communication system, in order to optimize network coverage, traffic, and anti-interference, it is necessary for the base station antenna used to reasonably adjust the beam pointing of the vertical plane pattern so that the pointing angle is properly tilted up and down in the vertical direction ( referred to as beam downtilt). There are generally two ways to generate beam downtilt: mechanical downtilt and electric downtilt. Due to the many advantages of ESC downtilt, such as large adjustable range of downtilt angle, high precision, good pattern control, strong anti-interference ability, and easy control, etc., major telecom operators are increasingly using ESC base station antennas. [0003] The electric base station antenna adjusts the beam downtilt adjustment of the elect...

AI Technical Summary

Problems solved by technology

[0004] Since the above-mentioned phase-shifting units of the prior art are superimposed on each other in sequence, when the number of vibrators in the antenna array of the electric-adjustable base station is large, such as more than four, the feeding network layout of the electric-adjustable base station antenna will be long, the signal loss is high, and the bandwidth is high. Narrow, large phase error, and reduces antenna gain

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