Isolation self-adapting adjusting antenna

Abstract

The invention discloses an isolation self-adapting adjusting antenna which comprises at least two radiating elements and a phase shifting device, wherein the radiating elements form a plurality of feed-in ports and are used for radiating signals to form a wave beam; the phase shifting device is used for adjusting the phases of signals fed in the radiating elements and comprises an adjusting component; and the adjusting component is used for driving the transmission component of the phase shifting device to act on a phase shifter to perform phase shifting operation to change the pitching angle of the wave beam formed by the antenna. The antenna further comprises at least one decoupling unit which is used for changing electromagnetic field coupling between the two feed-in ports of the antenna and moves within a preset range under the drive of the adjusting component. The decoupling unit is restrained from moving with the adjusting component for adjusting the phases of the signals of the antenna, so that a relationship is built up between the adjustment of electromagnetic field coupling between the feed-in ports of the antenna and the pitching angle of the wave beam of the antenna, and the isolation of the antenna can be changed when the phases of the signals of the antenna are adjusted to change the pitching angle of the wave beam.

Description

【Technical field】 [0001] The invention relates to an antenna suitable for a mobile communication system, in particular to an isolation self-adaptive adjustment antenna. 【Background technique】 [0002] The currently known multi-polarization antenna isolation adjustment method is typically characterized by the fact that the position of the decoupling component used to adjust the signal isolation between the radiating elements is fixed and cannot be moved. Even if the tilt angle of the antenna beam is adjusted, the position of the decoupling component remains the same. Fixed, please refer to patent announcement No. US6734829B1, patent announcement No. CN100435413C, and patent announcement No. US006072439A. In the known prior art of the pieces listed above, the positions of the decoupling components are fixed once they are installed. The applicant found that the decoupling components at the same position are relatively There are great differences in the adjustment of the isolat...

AI Technical Summary

Problems solved by technology

In the known prior art of the pieces listed above, the positions of the decoupling components are fixed once they are installed. The applicant found that the decoupling components at the same position are relatively There are great differences in the adjustment of the isolation of the antenna. For example, at a specific electrical downtilt, the decoupling component at a specific position can improve the isolation of the antenna, but when the electrical downtilt changes, the decoupling at this position The role of the coupling components is also changing. The decoupling components in some positions not only fail to improve the isolation of the antenna, but also make the isolation of the antenna worse. Therefore, it brings great difficulties to the adjustment of the isolation of the multi-polarized antenna.

Especially as the electrical downtilt range of multi-frequency shared antennas becomes wider and wider (for example, the continuous downtilt range of 15dBi gain range antenna is 0-30°), the antenna isolation becomes larger and larger with the electrical downtilt angle, and the network In order to improve the network quality, operators have higher and higher requirements on the isolation between the input ports of each array antenna, which makes it very difficult to achieve the isolation index of multi-polarized antennas

Therefore, in this context, how to improve the isolation between the input ports of each array antenna poses a certain challenge to those skilled in the art

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