Intelligent antenna and calibration device thereof

Abstract

The invention discloses an intelligent antenna comprising a reflection plate, an oscillator, an end cover and an installation plate connecting the reflection plate and the end cover. The intelligent antenna also comprises a calibration device. The calibration device comprises a medium plate, a plurality of joints and a calibration network. The calibration network is printed on the surface of the medium plate and comprises a plurality of power dividers which form a power distribution network and a plurality of directional couplers. Any branch port of the power distribution network is connected with one directional coupler. The inner core of each joint is directly connected with the combination port of the power distribution network or the signal input port of the directional coupler, with one joint being corresponding to one port. The calibration device is fixedly arranged at one side of the installation plate. The installation plate is provided with at least one bending bar. The bending bar runs through the calibration device and is fixed to the reflection plate. Through the above method, the size of the intelligent antenna can be reduced, and the amplitude and phase of signals from the combination port of the power distribution network in the calibration network of the calibration device to an antenna subarray are consistent.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a smart antenna and a calibrating device thereof. Background technique [0002] With the popularization of Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) and the development of Time Division Long Term Evolution (TD-LTE), smart antennas are one of the key technologies , has become the focus of antenna industry research. [0003] At present, the implementation method of the smart antenna is to design 4-8 columns of sub-arrays side by side in the horizontal direction of the array, and each sub-array is composed of at least two radiating elements in the vertical direction. Compared with other base station antennas, the existing smart antennas are larger in size and heavier in weight, which has some disadvantages, such as: first, the smart antenna has a large cross-section and a large wind load, which will cause damage in severe weather such as strong winds. The second is...

AI Technical Summary

Problems solved by technology

At present, the calibration network is usually placed on the front or back of the antenna, resulting in an increase in the length or thickness of the antenna, which is not conducive to the miniaturization of smart antennas

Moreover, the current calibration network is connected to the RF connector through a cable, and the length error of the cable will cause the phase inconsistency of the calibration network, which will seriously cause the smart antenna index to drop or even fail to work normally.

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