CN206058028U - DDS signal generator based on FPGA - Google Patents
DDS signal generator based on FPGA Download PDFInfo
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- CN206058028U CN206058028U CN201620821017.8U CN201620821017U CN206058028U CN 206058028 U CN206058028 U CN 206058028U CN 201620821017 U CN201620821017 U CN 201620821017U CN 206058028 U CN206058028 U CN 206058028U
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- wave data
- control word
- frequency control
- phase accumulator
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Abstract
DDS signal generator based on FPGA.The implementation method of function signal generator generally adopts discrete component or monolithic special integrated chip, but its frequency is not high, less stable, and is difficult debugging, develops and is all subject to larger restriction using upper.Composition of the present utility model includes：Wave data generation unit（1）, Wave data generation unit and D/A converting units（2）Electrically connect, D/A converting units and filter shape processing unit（3）Electrically connect, Wave data generation unit includes frequency control word generation module（4）, phase accumulator module（5）With Wave data ROM module（6）, frequency control word generation module includes input through keyboard control device（7）, digital-scroll technique output device（8）, frequency control word（9）, phase accumulator module includes mode selector（10）, phase accumulator（11）.This utility model is for the DDS signal generator based on FPGA.
Description
Technical field：
This utility model is related to a kind of DDS signal generator based on FPGA.
Background technology：
, also known as signal source or agitator, having a wide range of applications in production practices and sciemtifec and technical sphere can for signal generator
Multiple waveforms are produced, such as triangular wave, sawtooth waveforms, square wave, the circuit of sine wave is referred to as function signal generator.Function signal
The implementation method of generator generally adopts discrete component or monolithic special integrated chip, but its frequency is not high, less stable, and
Debugging is difficult, and is developed and larger restriction is all subject to using upper.
Utility model content：
The purpose of this utility model is to provide a kind of DDS signal generator based on FPGA.
Above-mentioned purpose is realized by following technical scheme：
A kind of DDS signal generator based on FPGA, its composition include：Wave data generation unit, described waveform number
Electrically connect with D/A converting units according to generation unit, described D/A converting units are electrically connected with filter shape processing unit, described
Wave data generation unit include frequency control word generation module, phase accumulator module and Wave data ROM module, it is described
Frequency control word generation module include input through keyboard control device, digital-scroll technique output device, frequency control word, described phase
Bit accumulator module includes mode selector, phase accumulator, described input through keyboard control device and described digital-scroll technique
Output device, described frequency control word are electrically connected, and described frequency control word is electrically connected with described phase accumulator, described
Phase accumulator electrically connect with described mode selector, described Wave data ROM module.
The beneficial effects of the utility model：
This utility model with FPGA development platforms as core, by the amplitude of various waveforms/phase quantization data storage in ROM
In, can be completed to select the output of waveform assigned frequency according to control signal, frequency control word generation module is produced according to input
Assigned frequency word, while showing incoming frequency numeral, digital-scroll technique output device adopts 8 LED charactrons, in the way of scanning
Display frequency numeral, phase bit addressing of the phase accumulator module to selected waveform, using corresponding frequencies control word as step-length, to phase
Position is repeated accumulating operation, and using the frequency control word and phase accumulator of 22b, mode selector combines real by two-position switch
Existing, using the 8 digit wave form ROM tables of 4Kb, Wave data ROM module is read as address code using accumulated phase value and is stored in storage
Wave data in device, Jing D/A conversions and amplitude control, filtering are obtained required waveform.
Description of the drawings：
Accompanying drawing 1 is structural representation of the present utility model.
Specific embodiment：
Embodiment 1：
A kind of DDS signal generator based on FPGA, its composition include：Wave data generation unit 1, described waveform number
Electrically connect with D/A converting units 2 according to generation unit, described D/A converting units are electrically connected with filter shape processing unit 3, institute
The Wave data generation unit stated includes frequency control word generation module 4, phase accumulator module 5 and Wave data ROM module
6, described frequency control word generation module includes input through keyboard control device 7, digital-scroll technique output device 8, frequency control word
9, described phase accumulator module includes mode selector 10, phase accumulator 11, described input through keyboard control device with
Described digital-scroll technique output device, described frequency control word are electrically connected, and described frequency control word is tired with described phase place
Plus device is electrically connected, described phase accumulator is electrically connected with described mode selector, described Wave data ROM module.
Claims (1)
1. a kind of DDS signal generator based on FPGA, its composition include：Wave data generation unit, is characterized in that：Described
Wave data generation unit is electrically connected with D/A converting units, described D/A converting units and filter shape processing unit Electricity Federation
Connect, described Wave data generation unit includes frequency control word generation module, phase accumulator module and Wave data ROM moulds
Block, described frequency control word generation module include input through keyboard control device, digital-scroll technique output device, frequency control word,
Described phase accumulator module includes mode selector, phase accumulator, described input through keyboard control device with it is described
Digital-scroll technique output device, described frequency control word are electrically connected, and described frequency control word and described phase accumulator are electric
Connection, described phase accumulator are electrically connected with described mode selector, described Wave data ROM module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620821017.8U CN206058028U (en) | 2016-08-01 | 2016-08-01 | DDS signal generator based on FPGA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620821017.8U CN206058028U (en) | 2016-08-01 | 2016-08-01 | DDS signal generator based on FPGA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206058028U true CN206058028U (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620821017.8U Expired - Fee Related CN206058028U (en) | 2016-08-01 | 2016-08-01 | DDS signal generator based on FPGA |
Country Status (1)
| Country | Link |
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| CN (1) | CN206058028U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109542815A (en) * | 2018-09-28 | 2019-03-29 | 天津市英贝特航天科技有限公司 | A kind of high-speed d/a system and working method based on USB3.0 interface |
| CN109884607A (en) * | 2019-03-21 | 2019-06-14 | 杭州电子科技大学 | A kind of synthetic aperture address code generating method based on FPGA |
| CN110399008A (en) * | 2019-07-16 | 2019-11-01 | 武汉鑫诚欣科技有限公司 | The ultrashort frequency synthesizer for involving microwave frequency band reception of wireless signals and method |
-
2016
- 2016-08-01 CN CN201620821017.8U patent/CN206058028U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109542815A (en) * | 2018-09-28 | 2019-03-29 | 天津市英贝特航天科技有限公司 | A kind of high-speed d/a system and working method based on USB3.0 interface |
| CN109884607A (en) * | 2019-03-21 | 2019-06-14 | 杭州电子科技大学 | A kind of synthetic aperture address code generating method based on FPGA |
| CN110399008A (en) * | 2019-07-16 | 2019-11-01 | 武汉鑫诚欣科技有限公司 | The ultrashort frequency synthesizer for involving microwave frequency band reception of wireless signals and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20170801 |
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| CF01 | Termination of patent right due to non-payment of annual fee |