Broadband radio frequency sampling method and device

Abstract

The invention relates to the technical field of radio frequency signal processing, and discloses a broadband radio frequency sampling method and device, and the method comprises the steps: constructing a composite pilot frequency injection path; extracting the time sequence deviation of each channel; executing delay compensation and frequency domain distortion extraction; sequentially executing amplitude and phase frequency domain compensation; evaluating a spurious-free dynamic range based on the corrected signal sequence; and outputting the radio frequency sampling reference signal sequence. In the prior art, collaborative calibration of cross-channel time sequence, bandwidth and gain is difficult to realize in a temperature drift and power supply disturbance environment under a multi-channel interleaving structure, and especially, stable spurious dynamic range performance guarantee is difficult to realize under the conditions of Sub-6GHz-7GHz multicarrier direct acquisition and 400MHz and above bandwidth aggregation of a 6G prototype base station. According to the invention, through composite pilot frequency injection, double-domain error estimation and an SFDR feedback calibration mechanism, the dynamic range and the distortion suppression performance under the broadband radio frequency direct acquisition condition are improved.

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