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signal generator

A signal generation and signal technology, applied in the field of signal processing, to achieve the effect of improving spectral purity

Active Publication Date: 2021-04-23
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention provides a signal generating device, which can solve the problem of signal frequency and amplitude jitter, and improve the spectral purity of the signal

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] An embodiment of the present invention provides a signal generating device, such as figure 1 As shown, the device includes:

[0025] The first signal source module 101 is configured to generate a main signal according to an input target signal;

[0026] The second signal source module 102 is configured to generate a trimming signal a...

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Abstract

The present invention provides a signal generation device, comprising: a first signal source module, used to generate a main signal according to an input target signal; a second signal source module, used to generate a trimming signal according to an adjustment factor, to adjust the main signal Perform correction and compensation; a coupling module, for signal coupling the main signal and the trimming signal to form a composite signal; a filter module, for filtering the composite signal to form an output signal; a sampling module, Used to collect the output signal; a feedback adjustment module connected to the sampling module and the second signal source module, and used to calculate according to the input target signal and the output signal collected by the sampling module An adjustment factor is obtained, and the adjustment factor is sent to the second signal source module to control the second signal source module to generate a trimming signal. The invention can improve the frequency spectrum purity of the signal.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a signal generating device. Background technique [0002] The traditional test signal generation method is to use signal generation sources such as signal sources, DAC, DDS, etc., and generate signals according to requirements under the control of the control program. Such signal generation methods cannot generate test signals with high spectral purity, mainly due to factors such as the noise characteristics of the signal source itself and the inevitable quantization errors in the digital quantization process. For example, for a 16-bit precision signal generator, when generating a sinusoidal signal with a maximum amplitude of 1V, the minimum signal jump is 1 / 65536V, and the signal generated by this signal source actually takes 1 / 65536V as the minimum jump unit The existence of the step signal and the hopping signal lead to different degrees of jitter in its fre...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/02
CPCG06F1/022
Inventor 张兴成孟真刘谋唐璇李继秀钟燕清田易阎跃鹏
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI