Multi-frequency base station antenna and its phase shifter transmission device

Abstract

The invention discloses a phase shifter transmission device. The phase shifter transmission device comprises a threaded rod and at least one slide rod arranged parallel to the threaded rod, wherein the threaded rod is provided with a nut in a reciprocating motion straightly along the length direction of the nut; each slide rod is respectively provided with a worm rod sliding block incapable of rotating relative to the corresponding slide rod; one end of each worm rod sliding block is connected onto the nut in a rotating manner; a plurality of output shafts with bevel gears are arranged at the upper end and the lower end of at least one of the worm rod sliding blocks in cross distribution; and each worm rod sliding block slides along the corresponding slide rod under the driving of the nut so as to selectively form acting connection with one tooth in the corresponding bevel gear. The invention also discloses a multi-frequency base station antenna. Through the implementation mode, the response time for adjusting the output shafts is short, the structure is compact, the weight is light, the reliability is high, the quantity of motors can be reduced, and the antenna competitive power is obviously improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication antennas, in particular to a multi-frequency base station antenna and a phase shifter transmission device thereof. Background technique [0002] The radiation angle of the mobile communication antenna needs to be adjusted according to the change of the main source of the antenna, and the method is to adjust the phase shifter in the antenna by driving the transmission device. There are often many phase shifters in a mobile communication antenna, and these phase shifters often need to be adjusted differently. At present, most of the phase shifter driving devices on the market are one-to-one, and one motor controls one phase shifter alone. For multi-frequency antennas, multiple motors need to be configured to realize the separate adjustment of multiple phase shifters. Due to the high price and heavy weight of the motor, it not only leads to a bulky antenna, but also increases the cost, ...

AI Technical Summary

Problems solved by technology

At present, most of the phase shifter drive devices on the market are one-to-one, and one motor controls one phase shifter alone. For multi-frequency antennas, multiple motors need to be configured to realize the separate adjustment of multiple phase shifters. Due to the high price and heavy weight of the motor, it not only leads to a bulky antenna, but also increases the cost. There are disadvantages such as complex structure, difficult production, and high cost.

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