Microwave signal source output channel expansion method and device

Abstract

The invention provides a microwave signal source output channel expansion method, which comprises the following steps of: performing down-conversion processing on an original microwave signal output by a to-be-expanded channel of a signal source to obtain an intermediate frequency signal; processing the intermediate frequency signal to obtain intermediate frequency signal parameter information; copying the intermediate frequency signal in a digital domain according to the intermediate frequency signal parameter information to obtain a digital domain intermediate frequency signal; and performing up-conversion on the digital domain intermediate frequency signal to recover the digital domain intermediate frequency signal into a target microwave signal highly consistent with the original microwave signal, and controlling multiple channels to synchronously output the target microwave signal. Meanwhile, the invention also provides a microwave signal source output channel expansion device, which can keep the frequency, amplitude and phase of the output signal of each expansion channel highly consistent with the received source signal. The problem of obvious phase difference existing in an extended signal channel by using a traditional method is solved.

Description

technical field [0001] The invention relates to the technical field of microwave measurement control and superconducting quantum computing chip testing, in particular to a method and device for expanding the output channel of a microwave signal source with high consistency. Background technique [0002] Quantum computing is a new computing mode that follows the laws of quantum mechanics to control quantum information units for computation. The physical architecture of the quantum computing chip itself is multi-input and multi-output. In the process of chip testing, multi-channel high-consistency signal sources are required as inputs. Commonly used signal sources generally only have 1 to 2 channels, which is far from meeting the test requirements. However, the expansion of signal channels using traditional power division has obvious phase inconsistencies, and the phase difference is generally as high as ±7°~±10°. Therefore, using It is difficult for the traditional power div...

AI Technical Summary

Problems solved by technology

[0004] Based on the above problems, the present invention provides a method and device for extending the output channel of a microwave signal source, so as to alleviate technical problems such as obvious phase inconsistency in signal channel expansion using traditional power division in the prior art

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