A detection method and device for receiving calibration of an array antenna

Abstract

The invention relates to the field of communications, and discloses a detection method and device for array antenna calibration, which are used to avoid additional hardware costs during the detection process and reduce the difficulty of later operation and maintenance. The method is as follows: after the base station completes the receiving calibration, it transmits the detection signal from the calibration channel at the specified time domain position, and then loops the detection signal back to each RF receiving channel through the radio frequency, thereby calculating the amplitude and phase characteristic parameters of each RF receiving channel , and finally, based on the obtained amplitude and phase characteristic parameters, when it is determined that each radio frequency receiving channel meets the amplitude and phase consistency requirements, it is determined that the receiving calibration is normal. In this way, there is no need to change the hardware structure of the existing base station equipment, nor to use other external auxiliary instruments, and the detection of the calibration effect can be successfully completed only by using the hardware conditions of the base station itself, thereby effectively reducing the increase in the detection process. The additional hardware cost also reduces the difficulty of later operation and maintenance.

Description

technical field [0001] The invention relates to the communication field, in particular to a detection method and device for array antenna calibration. Background technique [0002] In the next-generation mobile communication technology, due to the emergence of multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) technology, array antennas will be widely used. However, in terms of physical implementation, the characteristic response of the radio frequency circuit of each antenna is difficult to achieve consistency in amplitude and phase due to differences in hardware technology, working environment and other conditions. [0003] Antenna radio frequency channel calibration technology is born with the emergence and application of array antennas. Its main function is to perform pre-compensation processing (including amplitude and phase) on each radio frequency channel, so that it can eliminate the radio frequency reception on each antenna in the array antenna. ...

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Problems solved by technology

[0006] Obviously, this will increase additional hardware costs and increase the difficulty of later operation and maintenance

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