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Measuring device, calibration method and measuring method with jitter compensation

a technology of measuring device and calibration method, applied in the field of measuring device with jitter compensation, can solve the problem of noticeably reducing the useful bandwidth, and achieve the effect of increasing accuracy, increasing efficiency, and increasing accuracy

Active Publication Date: 2020-10-01
ROHDE & SCHWARZ GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a measuring device with jitter compensation. The device includes a clock source and a phase shifter to adjust the phase of a clock signal. This ensures high accuracy and efficiency. Additionally, the device can have an analog-to-digital converter or a spectrum analyzer to further increase efficiency. The device can compensate for existing jitter and reduce phase noise introduced by the measurement process.

Problems solved by technology

Disadvantageously, in this context, the pilot signal must have a certain distance to multiples of the half of the clock frequency and therefore reduces the useful bandwidth noticeably.
As a further disadvantage, nonlinear effects result in images of the pilot signal within the useful bandwidth.

Method used

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  • Measuring device, calibration method and measuring method with jitter compensation
  • Measuring device, calibration method and measuring method with jitter compensation
  • Measuring device, calibration method and measuring method with jitter compensation

Examples

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Embodiment Construction

[0040]Firstly, FIG. 1 illustrates an exemplary embodiment of the inventive measuring device 10 with jitter compensation. Said measuring device 10 comprises an analog-to-digital converter 11, a clock source 12, and a phase shifter 13. In this context, the phase shifter 13 receives a clock signal from the clock source 12 and adjusts the respective phase.

[0041]In addition to this, it is noted that the measuring device 10 may preferably comprise or be a spectrum analyzer.

[0042]As it can further be seen from FIG. 1, the measuring device 10 additionally comprises a combiner 14. Said combiner 14 introduces the clock source 12 to combine the clock signal and a respective measured signal.

[0043]Moreover, the measuring device 10 further comprises a phase shift adjuster 15 for the phase shifter 13. In this context, said phase shift adjuster 15 shifts the phase of the clock source 12 until it is sampled by the analog-to-digital converter 11 near the respective zero crossing.

[0044]Furthermore, in...

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PUM

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Abstract

A measuring device with jitter compensation is provided. The measuring device including at least one analog-to-digital converter, a clock source, and at least one phase shifter. In this context, the at least one phase shifter is configured to receive a clock signal from the clock source and to adjust the respective phase.

Description

TECHNICAL FIELD[0001]The invention relates to a measuring device with jitter compensation, a corresponding calibration method therefor, and a measuring method with jitter compensation.BACKGROUND ART[0002]Generally, in times of an increasing number of applications employing circuitry, there is a growing need of a measuring device, a corresponding calibration method therefor, and a measuring method for performing measurements with respect to a device under test comprising such an application in order to verify correct functioning of said applications in a highly accurate and efficient manner, whereby jitter is especially compensated.[0003]The document “Sampling Jitter Cancellation in Direct-Sampling Radios” by Ville Syrjala and Mikko Valkama published in IEEE Communications Society, WCNC 2010 proceedings, discloses a method to compensate for a timing jitter in the digital domain. Said method uses a pilot tone, which is superimposed to the respective analog-to-digital input and lies ou...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H03M1/08H03M1/12H04L7/033
CPCH04L7/033H03M1/1245H03M1/0836
Inventor FELDHAUS, GREGORROTH, ALEXANDER
Owner ROHDE & SCHWARZ GMBH & CO KG