Antenna phase-shift system

Abstract

The invention relates to an antenna phase-shift system, in particular to a simultaneous transmission device which accurately adjusts a plurality of groups of beam-forming networks in a multi-array antenna, a beam-forming network which is suitable for the antenna phase-shift system, and a precise phase-adjusting measurement and control device. The simultaneous transmitting device is used in an antenna which is provided with at least two radiating element arrays, implements control and realizes simultaneous phase shift to a phase-shift part which is owned by the beam-forming network of each radiating element array, comprising a driving device, a connecting rod and a transmission device, wherein the driving device is under the control of a control system which is independent of the antenna and provides a circular motion arm, the connecting rod is flexibly connected with the phase-shift part of each beam-forming network and causes each beam-forming network to shift the phase in a linking way under the linear motion of the connecting rod, and the transmission device converts the circular motion arm of the driving device into the linear motion of the connecting rod. The whole antenna phase-shift system has compact structure and can realize simultaneous precise phase adjustment to the antenna, in particular to TD-SCDMA antenna.

Description

【Technical field】 [0001] The invention relates to an antenna phase shifting system, in particular to a synchronous transmission device for accurately adjusting multiple groups of beamforming networks in a multi-array antenna, a beamforming network adapted to the phase shifting system of the present invention, and a precise phase modulation Measurement and control device. 【technical background】 [0002] As we all know, the antenna of a mobile communication base station is usually tilted downward at a certain angle relative to the horizontal line, which is called the antenna downtilt or depression angle. Adjusting the downtilt angle will directly affect the radiation effect of the base station. At present, two methods are mainly used to adjust the downtilt angle of the base station antenna. One way is to tilt down a certain physical angle when the antenna is installed, which is the so-called mechanical downtilt angle. The phase of the antenna can deflect the beam direction of...

AI Technical Summary

Problems solved by technology

[0006] For example, please refer to the CN2812316 patent announcement published on August 30, 2006, an adjustment device for mobile communication antenna phase shifters. Obviously, this adjustment device only performs phase shift for a row of radiation oscillators, and cannot be directly applied In the phasing process of multiple groups of beamforming networks in the TD-SCDMA smart antenna referred to in the present invention

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