Space stereo phase shifter for base station antenna, and phase shifter assembly

Abstract

The invention relates to the technical field of communication devices, and specifically relates to a space stereo phase shifter for a base station antenna. The space stereo phase shifter for a base station antenna includes a conductor housing with built-in multiple layers of conductor cavities, feed network assemblies in the conductor cavities, and insulating assemblies insulated from the conductor housing. The space stereo phase shifter for a base station antenna also includes transmission lines which are used for connecting the feed network assemblies in the adjacent two layers and are insulated from the conductor housing. The space stereo phase shifter for a base station antenna puts the feed network assemblies in the conductor cavity in each layer, uses the transmission lines to connect the feed network assemblies in the two adjacent layers of conductor cavities to form a space stereo feed network, and can reduce the width of the feed network by 50%. When the space stereo phase shifter is applied to a base station antenna, we have enough space to design a no-cable highly-integrated wave beam shaping network, so that the space stereo phase shifter has the advantages of improving production efficiency and consistence of antenna, saving the materials, reducing the cost, and being convenient for transportation.

Description

technical field [0001] The invention relates to the technical field of communication devices, in particular to a spatial three-dimensional phase shifter and a spatial three-dimensional phase shifter assembly for a base station antenna. Background technique [0002] At present, the base station electronically adjustable antenna realizes the beam downtilt adjustment of the base station antenna through the phase shifter in the beamforming network, which has the advantages of large adjustable range of downtilt angle, high precision, good pattern control, strong anti-interference ability, and easy control. Therefore, the phase shifter is a necessary component of the base station antenna. This device can adjust the downtilt angle of the antenna beam by changing the relative phase between the antenna elements, thereby facilitating the optimization of the communication network. [0003] The beamforming network design of existing base station antennas uses cables to connect the sub-p...

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Problems solved by technology

[0003] The beamforming network design of existing base station antennas uses cables to connect the sub-phase shifter units, or uses cables as part of the power divider, so that the entire feed network contains cables of various lengths, and must be guaranteed during processing. The length of each cable is accurate, and the workers must weld carefully according to the requirements when welding, otherwise, the consistency of the antenna pattern will not be guaranteed; secondly, the length processing, classification, management of different cables, and the installation of these cables during production are also difficult. It is extremely complicated, and there are too many solder joints. Each solder joint is an unstable factor for the whole machine. Too many solder joints will greatly increase the influencing factors of the third-order intermodulation of the antenna, increase the repair cost, and increase the production cost; in addition , the cables used in the existing antennas are all 141 cables. These cables have a large loss, especially in the high frequency band, and the gain of the antenna will be greatly reduced. This requires designing a longer and larger antenna to increase the gain, which increases the Not only that, when a cable has a problem, it will cause all the results to be wrong, the chance of damage is high, and the repair cost is high

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