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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

Active Publication Date: 2014-01-08
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no method for eliminating the local oscillator phase difference between the above two local oscillator channels in the prior art, that is, there is no phase compensation method specially used for the frequency conversion delay calibration system

Method used

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  • Phase compensation method for frequency conversion time delay calibration system
  • Phase compensation method for frequency conversion time delay calibration system
  • Phase compensation method for frequency conversion time delay calibration system

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Embodiment Construction

[0060] The content of the invention of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0061] Such as figure 2 As shown, the frequency conversion delay calibration system used in the phase compensation method for the frequency conversion delay calibration system provided by this embodiment includes a first receiving channel 1, a second receiving channel 2, a local oscillator source 3, and a first mixer 4 , a second mixer 5 , a first A / D acquisition module 6 , a second A / D acquisition module 7 , a computer 8 , a first local oscillator channel 9 and a second local oscillator channel 10 . The first receiving channel 1 is electrically connected with the first mixer 4 , the first A / D acquisition module 6 and the computer 8 in sequence. The second receiving channel 2 is electrically connected with the second mixer 5 , the second A / D acquisition module 7 and the computer 8 in sequence. The computer 8 is used fo...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03D7/16
Inventor 贾冒华谭帆彭薛葵童琼
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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