CN202076995U - DDS signal generator - Google Patents
DDS signal generator Download PDFInfo
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- CN202076995U CN202076995U CN2011201409031U CN201120140903U CN202076995U CN 202076995 U CN202076995 U CN 202076995U CN 2011201409031 U CN2011201409031 U CN 2011201409031U CN 201120140903 U CN201120140903 U CN 201120140903U CN 202076995 U CN202076995 U CN 202076995U
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- signal generator
- dds
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- dds signal
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Abstract
The utility model discloses a DDS (direct digital synthesizer) signal generator which comprises a central processor, an analog-to-digital conversion chip, a filter circuit and a power amplifier, wherein the DDS signal generator further comprises a static memory, and the central processor is connected with the static memory, the analog-to-digital conversion chip, the filter circuit and the power amplifier in sequence. The DDS signal generator has a simple circuit structure and low cost.
Description
Technical field
The utility model relates to a kind of DDS signal generator.
Background technology
The DDS signal generator of prior art comprises central processing unit (CPU), programmable logic device (CPLD), DDS special chip (being digital frequency synthesizer), modulus conversion chip (DAC), filter circuit, multiplier, operational amplifier and power amplifier, and described central processing unit is connected successively with programmable logic device, DDS special chip, filter circuit, multiplier, operational amplifier and power amplifier; Described programmable logic device also is connected with modulus conversion chip; Described modulus conversion chip also is connected with multiplier.There is following defective in the DDS signal generator of said structure in the use of reality: because the DDS signal generator of prior art adopts is DDS special chip AD9852, so cost is than higher.And because this DDS signal generator has also adopted large-scale programmable logic device, so circuit structure more complicated.
The utility model content
The technical problems to be solved in the utility model is, overcomes the defective of above prior art, and the DDS that a kind of circuit structure is simple and cost is low is provided signal generator.
The technical solution of the utility model is, a kind of DDS signal generator is provided, comprise central processing unit, modulus conversion chip, filter circuit and power amplifier, it also comprises static memory, and described central processing unit is connected successively with static memory, modulus conversion chip, filter circuit and power amplifier.
After adopting above structure, the utility model compared with prior art has the following advantages:
What a kind of DDS signal generator of the utility model adopted is general conventional chip, therefore make that whole dss signal generator cost is very low, and owing to this central processing unit combines with the mode of static memory, so circuit structure is very simple and cost is very cheap.
Description of drawings
Accompanying drawing is the circuit block diagram of a kind of DDS signal generator of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in drawings, a kind of DDS signal generator of the utility model, comprise central processing unit (CPU), modulus conversion chip (DAC), filter circuit and power amplifier, it also comprises static memory (SRAM), and described central processing unit is connected successively with static memory, modulus conversion chip, filter circuit and power amplifier.Whole parameters of signal generator can be passed through software calibration.A kind of DDS signal generator of the utility model can produce the signal frequency of 15MHZ.
Below only be described, but can not be interpreted as it is restriction claim with regard to most preferred embodiment of the present utility model.The utility model is not limited only to above embodiment, and its concrete structure allows variation.In every case the various variations of being done in the protection range of the utility model independent claims are all in protection range of the present utility model.
Claims (1)
1. DDS signal generator, comprise central processing unit, modulus conversion chip, filter circuit and power amplifier, it is characterized in that: it also comprises static memory, and described central processing unit is connected successively with static memory, modulus conversion chip, filter circuit and power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201409031U CN202076995U (en) | 2011-04-29 | 2011-04-29 | DDS signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201409031U CN202076995U (en) | 2011-04-29 | 2011-04-29 | DDS signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076995U true CN202076995U (en) | 2011-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201409031U Expired - Fee Related CN202076995U (en) | 2011-04-29 | 2011-04-29 | DDS signal generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842562A (en) * | 2016-03-30 | 2016-08-10 | 东莞市广安电气检测中心有限公司 | Device for testing immunity to common-mode conducted disturbance |
-
2011
- 2011-04-29 CN CN2011201409031U patent/CN202076995U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842562A (en) * | 2016-03-30 | 2016-08-10 | 东莞市广安电气检测中心有限公司 | Device for testing immunity to common-mode conducted disturbance |
| CN105842562B (en) * | 2016-03-30 | 2018-12-21 | 东莞市广安电气检测中心有限公司 | A kind of device for the test of common mode conduction interference immunity to interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140429 |