Phase compensation method for frequency conversion time delay calibration system

A phase compensation and calibration system technology, applied in the field of phase compensation, can solve problems such as phase compensation methods without frequency conversion delay calibration systems
CN103501160AActive Publication Date: 2014-01-08BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
Publication Date
2014-01-08

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Abstract

The invention discloses a phase compensation method for a frequency conversion time delay calibration system. The method includes the following steps: sending a continuous wave source signal, dividing the continuous wave source signal into a first continuous wave sub-signal and a second continuous wave sub-signal, adjusting the power of the first continuous wave sub-signal and the power of the second continuous wave sub-signal respectively, sending a first local oscillator signal and a second local oscillator signal, acquiring a first intermediate frequency signal and a second intermediate frequency signal through frequency mixing, acquiring a first set of data samples and a second set of data samples through sampling, acquiring a third set of data samples and a fourth set of data samples through the Hilbert transform, acquiring the phase difference between the first intermediate frequency signal and the second intermediate frequency signal through calculation, sending a third local oscillator signal and a fourth local oscillator signal, acquiring a third intermediate frequency signal and a fourth intermediate frequency signal through frequency mixing, acquiring a fifth set of data samples and a sixth set of data samples through sampling, acquiring a seventh set of data samples and an eighth set of data samples through the Hilbert transform, and acquiring the phase difference between the third intermediate frequency signal and the fourth intermediate frequency signal through calculation.
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Description

technical field

[0001] The invention relates to the technical field of phase compensation, in particular to a phase compensation method used in a frequency conversion delay calibration system. Background technique

[0002] Such as figure 1 As shown, the frequency conversion delay calibration system in the prior art includes a local oscillator source, a first local oscillator channel, a second local oscillator channel, a first mixer and a second mixer. When in use, on the one hand, the first signal to be tested is input to the first mixer, and the second signal to be tested is input to the second mixer at the same time, the frequency of the first signal to be tested is the same as that of the second signal to be tested, but the first There is an original phase difference between the signal to be measured and the second signal to be measured; on the other hand, the local oscillator source sends the first local oscillator signal to the first mixer through the first local oscil...

Claims

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