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Broadband high-precision arbitrary waveform synthesis method based on multiple DACs

A technology of arbitrary waveforms and synthesis methods, applied in radio wave measurement systems, instruments, electrical digital data processing, etc., can solve problems that have not been reported, achieve high bandwidth, and facilitate design and debugging.

Active Publication Date: 2021-12-14
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In existing methods, parallel pseudo-interpolation technology and phase-splitting parallel storage technology can be used to break device limitations to achieve an increase in sampling rate, but the method for improving vertical resolution has not been reported yet.

Method used

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  • Broadband high-precision arbitrary waveform synthesis method based on multiple DACs
  • Broadband high-precision arbitrary waveform synthesis method based on multiple DACs
  • Broadband high-precision arbitrary waveform synthesis method based on multiple DACs

Examples

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Embodiment

[0052] figure 1 It is an architecture diagram of a specific implementation mode of the OFDMA-based converged access network system of the present invention.

[0053] In this example, if figure 1 Shown, a kind of broadband high-precision arbitrary waveform synthesis method based on multiple DACs of the present invention comprises the following steps:

[0054] S1, parameter setting;

[0055] Set the number of DACs to 2 Q , the vertical resolution of the DAC n DAC ; Set the sampling rate increase factor a and the vertical resolution increase number b, a≤2 Q , b≤Q, and a·2 b = 2 Q ;

[0056] S2. Group the DACs according to the sampling rate increase multiple and the number of vertical resolution increase digits;

[0057] In this embodiment, in order to make full use of hardware resources, we can rearrange the DACs under each specific condition. If there are 2 hardware resources Q DAC, we can divide all DACs into a group, each group has 2 b DAC; where, each group of 2 b...

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Abstract

The invention discloses a broadband high-precision arbitrary waveform synthesis method based on multiple DACs. The sampling rate and the resolution are improved by configuring the phase of a sampling clock and decomposing sampling points. It is assumed that a parallel structure with 2Q DACs is equally divided into a groups of resolution improving structures, each group comprises 2b DACs, the sampling rate of the system can be improved by a times through the distribution mode, and the resolution can be improved by b times through the distribution mode; in this way, the sampling rate and the improvement multiple of the resolution ratio can be freely selected through a flexible configuration method, and the method has very good expansibility and flexibility and can meet the requirements of the current society for signal synthesis.

Description

technical field [0001] The invention belongs to the technical field of waveform generators, and more specifically relates to a multi-DAC-based wideband high-precision arbitrary waveform synthesis method. Background technique [0002] Arbitrary waveform generator is a signal source widely used in electronic equipment, equipment development, production and maintenance guarantee, which can solve the problems that the real signal scene is difficult to reproduce or the risk is extremely high. For example, the whole machine debugging and performance appraisal of the radar use real targets (such as aircraft) to provide test signals to the radar, which not only consumes a lot of manpower and material resources, but also affects the development progress, and even cannot be realized in some cases (such as bad weather). A wideband, high-precision arbitrary waveform generator is an ideal tool to address this challenge. With the rapid development of modern communications, aerospace dete...

Claims

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Application Information

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IPC IPC(8): G06F1/02G06F1/03G01S7/40
CPCG06F1/022G06F1/0321G01S7/4052Y02D10/00
Inventor 赵文浩刘科郭广坤刘航麟付在明肖寅东张朋侯东
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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