CN206060813U - A kind of multicarrier synthesizes modulating system - Google Patents
A kind of multicarrier synthesizes modulating system Download PDFInfo
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- CN206060813U CN206060813U CN201621016920.3U CN201621016920U CN206060813U CN 206060813 U CN206060813 U CN 206060813U CN 201621016920 U CN201621016920 U CN 201621016920U CN 206060813 U CN206060813 U CN 206060813U
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Abstract
The utility model discloses a kind of multicarrier synthesizes modulating system, including D/A modular converters, DCM, DDS, modulation module and digital synthesis module；The outfan of the DCM is connected with DDS, provides clock for DDS；DDS generates multiple DDS carrier signals, and the outfan of DDS is connected with modulation module；The outfan of modulation module is connected with digit synthesis module, the outfan of digit synthesis module is connected with D/A modular converters, the modulation module is also received from outside SPI orders by SPI interface, the order is voluntarily configured as needed by user, to control modulation system of the modulation module to each carrier signal；Described digit synthesis module is also received from outside SPI orders by SPI interface, and the order is configured by user as needed, 1 ~ 6 any carrier signal synthesized with controlling digit synthesis module.This utility model has the function of multi-carrier modulation synthesis output, while carrier signal output overall process is controllable, safe and reliable.
Description
Technical field
This utility model is related to a kind of multicarrier synthesis modulating system.
Background technology
Carrier wave is the radio wave of a characteristic frequency, unit Hz.In wireless communication technology, we are transmitted using carrier wave
Information, then will launch in the air again on digital signal modulated a to high frequency carrier and receives, so carrier wave is transmission information
The physical basis of (speech and data), final carrying tool.
The Different Modulations such as existing QPSK, BPSK are both for the work of single carrier wave signal modulation and demodulation, make
Realized with FPGA, it is impossible to realize arbitrarily to export multiple different carrier signals simultaneously in a certain bandwidth, it is impossible to right
Multiple carrier signals can independently realize the modulation work of different modes.In jamming field, there is certain unicity and interference
Property is not strong enough, outgoing carrier signal number and modulation system underaction.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of multicarrier synthesizes modulating system, tool
There is the function of multi-carrier modulation synthesis output, while carrier signal output overall process is controllable, safe and reliable.
The purpose of this utility model is achieved through the following technical solutions：A kind of multicarrier synthesizes modulating system, bag
Include D/A modular converters, DCM, DDS, modulation module and digital synthesis module；The outfan of the DCM is connected with DDS, is that DDS is carried
For clock；DDS generates multiple DDS carrier signals, and the outfan of DDS is connected with modulation module；The outfan of modulation module with
Digit synthesis module connects, and the outfan of digit synthesis module is connected with D/A modular converters.
Further, the DCM, DDS, modulation module and digital synthesis module are inside FPGA.
Further, the DDS carrier signals that the DDS is generated are four phase DDS carrier signals.
Further, the number of the DDS carrier signals is 6.
The modulation module is also received from outside SPI orders by SPI interface, the order by user as needed oneself
Row configuration, to control modulation system of the modulation module to each carrier signal.
Described digit synthesis module is also received from outside SPI orders by SPI interface, the order by user according to
Configuration is needed, the carrier signal of 1 ~ 6 is synthesized with controlling digit synthesis module.
The beneficial effects of the utility model are：（1）Synthesize the function of output with multi-carrier modulation, while carrier signal is defeated
Go out overall process controllable, safe and reliable；
（2）Whole multi-carrier modulation synthetic technology is entirely to realize in FPGA, while including multiple carrier signals
Produce output and modulate, it is by multi-carrier modulation synthesis system, simple to realize exporting 1-6 simultaneously in any fixed-bandwidth
Signal, and realize that the modulation system of each carrier signal is individually controllable.
Description of the drawings
Fig. 1 is the theory diagram of multicarrier synthesis modulating system in this utility model；
Fig. 2 is the process schematic that multicarrier synthesizes modulation.
Theory diagrams of the Fig. 3 for this utility model one embodiment.
Specific embodiment
The technical solution of the utility model, but protection domain of the present utility model are described in further detail below in conjunction with the accompanying drawings
It is not limited to described below.
As shown in figure 1, a kind of multicarrier synthesizes modulating system, including D/A modular converters, DCM, DDS, modulation module sum
Word synthesis module；The outfan of the DCM is connected with DDS, provides clock for DDS；DDS generates multiple DDS carrier signals, and
The outfan of DDS is connected with modulation module；The outfan of modulation module is connected with digit synthesis module, digit synthesis module it is defeated
Go out end to be connected with D/A modular converters.
Further, the DCM, DDS, modulation module and digital synthesis module are inside FPGA.
Further, the DDS carrier signals that the DDS is generated are four phase DDS carrier signals.
Further, the number of the DDS carrier signals is 6.
The modulation module is also received from outside SPI orders by SPI interface, the order by user as needed oneself
Row configuration, to control modulation system of the modulation module to each carrier signal.
Described digit synthesis module is also received from outside SPI orders by SPI interface, the order by user according to
Configuration is needed, the carrier signal of 1 ~ 6 is synthesized with controlling digit synthesis module.
As shown in Fig. 2 providing clock by the DCM inside FPGA, DDS produces 6 carrier signals（2~7）, each carrier wave letter
4 DDS signals are produced number respectively（a、b、c、d）, that is, 6 carrier signals for generating are four phase DDS carrier signals, in modulation mould
After being modulated in block, digit synthesis module is transferred to, under the control of digit synthesis module-external SPI order, selects corresponding
Four several phase DDS carrier signals are synthesized gives D/A modular converters, and Fig. 2 show 6 carrier signals and both participates in
Synthesis, the signal packet of synthesis is containing the information in 6 carrier signals；Participate in synthesis carrier signal how many（Most 6）, close
Signal into after just includes the carrier signal information of corresponding number.
As shown in figure 3, for the theory diagram of this utility model one embodiment, the embodiment includes amplifier, A/D moduluss of conversion
Block, memorizer, MCU, clock chip, crystal oscillator, D/A modular converters and low pass filter；The input difference of the clock chip
It is connected with MCU and crystal oscillator, the outfan of clock chip is connected with FPGA and D/A change-over circuits respectively；Modulated signal is passed sequentially through
Amplifier and A/D modular converters input FPGA, the outfan of FPGA are connected with low-pass filter circuit by D/A change-over circuits, have low
Bandpass filter circuit carries out signal output；Described FPGA is also connected with MCU and memorizer.
In this embodiment, the amplifier adopts AD823AR, the AD conversion module to adopt AD7476, FPGA to adopt
XC7K160T-2FFG676I, MCU adopt C8051F340, memorizer to adopt AT24C256, clock chip to adopt AD9516, crystal oscillator
Using TDGAAN-40.00MHz, D/A modular converters adopt AD9736.
Under MCU controls, high-speed clock signal is produced by crystal oscillator and clock chip, is exported and is given FPGA and D/A modular converters
Clock signal is supplied to DDS by FPGA internal DCs M by (D/A chips), is produced 6 carrier signals, is exported to modulation module；With
This simultaneously, modulated signal after amplifier and A/D modular converters, export FPGA, control of the modulation module according to outside SPI orders
System, is modulated to the modulated signal of carrier signal and input, the carrier signal after being modulated, the digit synthesis inside FPGA
Module under the control of outside SPI orders is selected to specify the carrier signal after the modulation of number (1 ~ 6) to be synthesized, is synthesized
The signal for obtaining, exports after carrying out D/A conversions and low-pass filtering.
Claims (6)
1. a kind of multicarrier synthesizes modulating system, it is characterised in that：Including D/A modular converters, DCM, DDS, modulation module sum
Word synthesis module；The outfan of the DCM is connected with DDS, provides clock for DDS；DDS generates multiple DDS carrier signals, and
The outfan of DDS is connected with modulation module；The outfan of modulation module is connected with digit synthesis module, digit synthesis module it is defeated
Go out end to be connected with D/A modular converters.
2. a kind of multicarrier according to claim 1 synthesizes modulating system, it is characterised in that：The DCM, DDS, modulation mould
Block and digital synthesis module are inside FPGA.
3. a kind of multicarrier according to claim 1 synthesizes modulating system, it is characterised in that：The DDS that the DDS is generated is carried
Ripple signal is four phase DDS carrier signals.
4. a kind of multicarrier according to claim 1 synthesizes modulating system, it is characterised in that：The DDS carrier signals
Number is 6.
5. a kind of multicarrier according to claim 1 synthesizes modulating system, it is characterised in that：The modulation module also passes through
SPI interface is received from outside SPI orders, and the order is voluntarily configured as needed by user, to control modulation module to each
The modulation system of individual carrier signal.
6. a kind of multicarrier according to claim 1 synthesizes modulating system, it is characterised in that：Described digit synthesis module
Also received from outside SPI orders by SPI interface, the order is configured as needed by user, to control digit synthesis mould
Block synthesizes to the carrier signal of 1 ~ 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621016920.3U CN206060813U (en) | 2016-08-31 | 2016-08-31 | A kind of multicarrier synthesizes modulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621016920.3U CN206060813U (en) | 2016-08-31 | 2016-08-31 | A kind of multicarrier synthesizes modulating system |
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| Publication Number | Publication Date |
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| CN206060813U true CN206060813U (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621016920.3U Expired - Fee Related CN206060813U (en) | 2016-08-31 | 2016-08-31 | A kind of multicarrier synthesizes modulating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112804179A (en) * | 2020-12-31 | 2021-05-14 | 国网山西省电力公司营销服务中心 | Multi-carrier modulation device and modulation method thereof |
-
2016
- 2016-08-31 CN CN201621016920.3U patent/CN206060813U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112804179A (en) * | 2020-12-31 | 2021-05-14 | 国网山西省电力公司营销服务中心 | Multi-carrier modulation device and modulation method thereof |
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Granted publication date: 20170329 Termination date: 20190831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |