A kind of calibration method and equipment

Abstract

The embodiment of the present application discloses a calibration method and equipment, which relate to the field of communication, and can compensate the amplitude and phase results obtained by measurement, which saves costs while ensuring the performance of the phased array antenna, and is conducive to the widespread deployment of calibration systems. The method is applied to an antenna array amplitude and phase calibration system, and the system includes a first device, a second device and a third device, the first device includes N antenna groups, and the second device includes at least three probes. The method includes: the third device determines the position error of each antenna group in the N antenna groups; determines the actual position of the antenna group according to the target position of the antenna group and the position error of the antenna group, and determines the target position of the antenna group according to the actual position of the antenna group The phase compensation value and / or the amplitude compensation value of the target probe of the second device; finally, according to the phase compensation value and the amplitude compensation value of the antenna group, the phase result and the amplitude result obtained by measuring the signal transmitted by the antenna group by the target probe of the second device Make compensation.

Description

technical field [0001] The embodiments of the present application relate to the communication field, and in particular, to a calibration method and equipment. Background technique [0002] Massive Multi-input and Multi-output (Massive-MIMO) technology based on phased array antennas is widely used in 5G communication systems. Both network equipment and terminal equipment can deploy phased array antennas. The so-called phased array antenna is an antenna array composed of multiple antenna groups that can independently control the phase (or time delay) according to a certain spatial layout. [0003] When designing a phased array antenna, it is necessary to control the amplitude and phase of the signal transmitted by the phased array antenna to a certain extent by controlling the position of the antenna unit and other factors, so as to ensure that the performance of the phased array antenna will not be affected. However, affected by factors such as differences in the position o...

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Problems solved by technology

However, affected by factors such as differences in the position of devices in the equipment, differences in board materials, and mutual coupling between antenna groups, it is often difficult to ensure that the amplitude and phase of the phased array antenna achieve the expected effect after the equipment leaves the factory. performance impact

[0004] In the prior art, the probe can be set at the far-field boundary, and the amplitude and phase of the phased array antenna can be calibrated according to the measurement results of the probe, which leads to a huge system size and high cost; or, use high-cost high-precision scanning frame and turntable Aligning the antenna groups one by one to calibrate, the cost is high, the volume is large, the calibration efficiency is low, and it is not suitable for production use

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