Unlock instant, AI-driven research and patent intelligence for your innovation.

Digital frequency synthesizing method and device

A technology for digital frequency synthesis and signal synthesis, which can be used in electrical digital data processing, digital function generators, digital data processing components, etc., and can solve problems such as large errors.

Active Publication Date: 2018-04-20
GUANGZHOU HAIGE COMM GRP INC
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a digital frequency synthesis method and device for the problem of large errors in traditional direct digital frequency synthesizers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Digital frequency synthesizing method and device
  • Digital frequency synthesizing method and device
  • Digital frequency synthesizing method and device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] see figure 2 , figure 2 It is a schematic flowchart of a digital frequency synthesis method according to an embodiment of the present invention. Digital frequency synthesis method in this embodiment, comprises the following steps:

[0063] Step S210: Obtain phase control word values ​​of each phase control word of the signal to be synthesized.

[0064] In this step, the phase control word includes a multi-bit phase control word value, and the phase control word value can be represented by a binary value.

[0065] In one embodiment, step S210 may include the following steps: obtaining the phase control word value of the unit phase control word according to the frequency parameter of the signal to be synthesized and the frequency parameter of the reference clock signal; when the reference clock signal arrives, the unit phase control word The value is accumulated, and the accumulated phase control word value is used as the phase control word value.

[0066] Specifica...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of the digital signal processing and in particular to a digital frequency synthesizing method and device. The method comprises the following steps: to obtain a phase control word value of each phase control word of a signal to be synthesized; dividing each phase control word value according to the high-low position, to obtain a plurality of address control word values, wherein the address control word value comprises a multi-bit phase control word value; executing the digital frequency synthesis to the signal to be synthesized by using the address control word values. The solution is capable of, through dividing the phase control word value to the multiple address control word values, executing the digital frequency synthesis to the signal to besynthesized, realizing the digital frequency synthesis by using total bit wide information of the phase control word, avoiding the phase interception, improving the precision of the frequency synthesis, and reducing the phase noise and stray degree.

Description

technical field [0001] The present invention relates to the technical field of digital signal processing, in particular to a digital frequency synthesis method and device. Background technique [0002] Direct Digital Frequency Synthesis (DDS) technology is used to generate ultra-low phase noise, high-precision arbitrary waveform signals, and is the core module of various fast frequency scans, modems, and mixers. [0003] In traditional direct digital frequency synthesizers, high-speed memory is often used as a look-up table (Look-up-Table, LUT) of sine-cosine waveform data to realize phase-to-amplitude conversion. In order to compress the scale of the sine-cosine waveform data look-up table, The phase control word intercepts high-order phase information for frequency synthesis, resulting in large phase noise and spuriousness. Contents of the invention [0004] Based on this, it is necessary to provide a digital frequency synthesis method and device for the problem of larg...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F1/03
CPCG06F1/0342
Inventor 潘未庄牟传坤夏效禹叶韬成邹瑜王甲池
Owner GUANGZHOU HAIGE COMM GRP INC