CN106342365B - A kind of phased array antenna signal generator and its implementation based on DDS - Google Patents
A kind of phased array antenna signal generator and its implementation based on DDSInfo
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- CN106342365B CN106342365B CN201010050765.8A CN201010050765A CN106342365B CN 106342365 B CN106342365 B CN 106342365B CN 201010050765 A CN201010050765 A CN 201010050765A CN 106342365 B CN106342365 B CN 106342365B
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Abstract
The present invention relates to a kind of phased array antenna signal generator and its implementation based on DDS, its technology belongs to electronics and automatic field. Comprise the controller being connected by USB and PC, also comprise PLL, power divider, USB, N DDS, N-1 phase difference detector, N upconverter. The present invention has the features such as digital integration degree is high, phase controlling is accurate, volume is little.
Description
Technical field
The present invention relates to a kind of phased array antenna signal generator and its implementation based on DDS. Its technologyBelong to electronics and automatic field.
Background technology
Phased array antenna signal generator is to produce the controlled waveform output of phase place, and it is the core of phased array antennaHeart research contents. It is high, able to programme, stable that the phased array antenna signal generator of this patent design has precisionDegree high. " the Ku wave band DRO-PLL of the research such as Xie Tingxian, Zhang Yuxing of Chengdu University of Electronic Science and TechnologyDesign and realization " (referring to University of Electronic Science and Technology's master thesis, 2009), and the yellow rising sun, Liu Guang" development of C-band low phase noise local vibration source " of the research such as blessing is (referring to University of Electronic Science and Technology's master's degree opinionLiterary composition, 2005) be all the reception in design mono signal source. And the feature of phased array antenna signal generator is to wantControl and signal source that design multichannel phase difference can fine adjustment.
Summary of the invention
The object of the present invention is to provide one to have that digital integration degree is high, phase controlling is accurate, volume is little etc.The phased array antenna signal generation systems of feature.
A phased array antenna signal generator based on DDS, is characterized in that:
Comprise the controller being connected by USB and PC, also comprise PLL, power divider, USB, NDDS, N-1 phase difference detector, N upconverter;
First group of data output end of its middle controller is connected with the frequency register input of above-mentioned PLL, PLLData output end is connected with the data input pin of above-mentioned power divider, and the data output end of power divider dividesBe not connected with first group of data input pin of an above-mentioned N upconverter;
Second group of data output end of above-mentioned controller is connected with the data input pin of an above-mentioned N DDS respectively, NThe VT of individual DDS is connected with the second data input pin of an above-mentioned N upconverter respectively, NThe data output end output signal of individual upconverter;
The data output end of first via DDS in an above-mentioned N DDS is also examined with above-mentioned N-1 phase difference respectivelySurvey device reference data input be connected, the data output end of all the other N-1 DDS also respectively with above-mentioned N-1The comparing data input of individual phase difference detector is connected, the data output of an above-mentioned N-1 phase difference detectorEnd is connected with second group of data input pin of controller (1) again.
An implementation method for phased array antenna signal generator based on DDS, is characterized in that comprising followingProcess:
1. first group of control data that controller is sent PC here by USB, give PLL frequency register,Realize the control to PLL output frequency, produce the local oscillation signal of a road 2GHz, then Ba Gai road local oscillation signalGive power divider and carry out power division, produce the identical local oscillation signal of N road phase place, as N upper changeFrequently one group of input of device;
2. second group of control data that controller is sent PC here by USB, give N DDS, realizeTo the control of N DDS phase of output signal, the N road vision signal that output phase is controlled, on NAnother group input of frequency converter;
3. N-1 phase difference detector JiangN-1 road vision signal carried out phase place with the 1st tunnel reference signal respectivelyPoor detection, obtains corresponding phase difference feedback signal for upgrading second group of data of controller, controller rootAgain send corresponding second group of data to N DDS according to phase difference feedback signal, realize N road vision signalOutput phase synchronous;
4. N road local oscillation signal and N road vision signal are carried out respectively up-conversion by N upconverter, produces NThe phase locked radiofrequency signal in road.
The object of the phased array antenna signal generator based on DDS is to produce a N road radiofrequency signal, this NThe phase place of road radiofrequency signal can be carried out software control by PC. Phased array antenna signal generation systems is realizedConcrete function comprise: 1, use DDS chip to realize the phase controlling of vision signal. Than simulation phase shiftDevice, adopts DDS to realize phase controlling, can greatly improve phase controlling precision; 2, use phase-detection mouldPiece is realized the closed feedback loop of phase controlling. Phase detecting module improves the precision of phase controlling more,Avoid the poor impact that systematic function is brought of phase synchronism of multi-disc DDS self; 3, real with a PLLThe generation of Xian Yi road 2GHz local oscillation signal; 4, by upconverter, vision signal and local oscillation signal are carried out to upper changeFrequently. It is controlled that the radiofrequency signal of upconverter output can either realize phase place, again signal frequency brought up to and penetratedFrequency range. The first three items of above four major functions realizes owing to taking full advantage of digital method, significantlyImproved system performance and integrated level, reduced system complexity.
Brief description of the drawings
Fig. 1 is a kind of phased array antenna signal generator system block diagram based on DDS.
Label title in Fig. 1: 1 is controller, 2 is PLL, and 3 is 1 road 2GHz local oscillation signal, and 4 areLocal oscillation signal power divider, 5 is N road 2GHz local oscillation signal, 6 controls of giving N DDS for controllerData processed, 7 is PC, and 8 is USB, and 9 is N DDS, and 10 is 1 road phase reference vision signal, 11WeiN-1 road vision signal, 12 is N road vision signal, and 13 is N-1 phase difference detector, and 14 is phasePotential difference feedback signal, 15 is N upconverter, 16 is N road radiofrequency signal.
Detailed description of the invention
As shown in Figure 1, its concrete composition comprises phased array antenna signal generation systems of the present invention: controlDevice 1 processed, PLL2,1 road 2GHz local oscillation signal 3, local oscillation signal power divider 4, N road 2GHz is originallyThe signal 5 that shakes, controller is given the control data 6 of N DDS, PC 7, USB8, N DDS9,1Road phase reference vision signal 10, N-1 road vision signal 11, N road vision signal 12, N-1 phase placeDifference detector 13, phase difference feedback signal 14, N upconverter 15, N road radiofrequency signal 16.
Relation between each part mentioned above is: first group of control number that controller is sent here by USB according to PCAccording to, the frequency register of a PLL of control, realizes the control to PLL output frequency, produces a road 2GHzLocal oscillation signal, then Ba Gai road local oscillation signal is given power divider and is carried out power division, produces N road phaseThe local oscillation signal that position is identical, as one group of input of N upconverter; Controller passes through USB according to PCSecond group of control data sending here, give N DDS, realize the control to N DDS phase of output signal,The N road vision signal that output phase is controlled, as another group input of N upconverter; N-1 phase placeDifference detector JiangN-1 road vision signal is carried out phase difference detection with the 1st tunnel reference signal respectively, obtains correspondingPhase difference feedback signal for upgrading second group of data of controller, controller is according to phase difference feedback signalAgain send corresponding second group of data to N DDS, the output phase of realizing N road vision signal is synchronous; NN road local oscillation signal and N road vision signal are carried out respectively up-conversion by individual upconverter, produces N road phase place sameThe radiofrequency signal of step.
Wherein, controller 1 adopts ARM chip S3C44B0X, and PLL2 adopts ADF4360-1, and DDS9 adoptsAD9912, phase difference detector 13 adopts AD8302 to add AD7895-2, power divider 4 and upconverter15 adopt radio frequency analog device.
Claims (2)
1. the phased array antenna signal generator based on DDS, is characterized in that:
Comprise by USB (8) and the controller (1) that PC (7) is connected, also comprise PLL (2), power dividesOrchestration (4), USB (8), N DDS (9), N-1 phase difference detector (13), N upconverter
(15)；
First group of data output end of its middle controller (1) and the input of the frequency register of above-mentioned PLL (2)End is connected, and PLL (2) data output end is connected with the data input pin of above-mentioned power divider (4), and power dividesThe data output end of orchestration is connected with first group of data input pin of an above-mentioned N upconverter (15) respectively;
Second group of data output end of above-mentioned controller (1) respectively with the data input pin of an above-mentioned N DDS (9)Be connected, the VT of N DDS (9) respectively with the second data of an above-mentioned N upconverter (15)Input is connected, the data output end output signal of N upconverter (15);
The data output end of first via DDS in an above-mentioned N DDS also respectively with an above-mentioned N-1 phase difference detectorReference data input be connected, the data output end of all the other N-1 DDS also respectively with an above-mentioned N-1 phaseThe comparing data input of potential difference detector is connected, and the data output end of an above-mentioned N-1 phase difference detector againBe connected with second group of data input pin of controller (1).
2. an implementation method for the phased array antenna signal generator based on DDS, it is characterized in that comprising withLower process:
1. first group of control data that controller (1) is sent PC (7) here by USB (8), givePLL (2) frequency register, realizes the control to PLL (2) output frequency, produces the basis of a road 2GHzThe signal (3) that shakes, then Ba Gai road local oscillation signal (3) is given power divider (4) and is carried out power division,Produce the identical local oscillation signal (5) of N road phase place, as one group of input of N upconverter (15);
2. second group of control data that controller (1) is sent PC (7) here by USB (8), giveN DDS, realizes the control to N DDS (9) phase of output signal, and the controlled N road of output phase is lookedFrequently signal (12), as another group input of N upconverter (15);
3. N-1 phase difference detector (13) JiangN-1 road vision signal (11) respectively with the 1st tunnel referenceSignal (10) carries out phase difference detection, obtains corresponding phase difference feedback signal (14) for upgrading controlSecond group of data of device, controller (1) sends corresponding second again according to phase difference feedback signal (14)Group data are to N DDS (9), and the output phase of realizing N road vision signal (12) is synchronous;
4. N upconverter (15) is by N road local oscillation signal (5) and N road vision signal (12) differenceCarry out up-conversion, produce the phase locked radiofrequency signal in N road (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010050765.8A CN106342365B (en) | 2010-10-22 | 2010-10-22 | A kind of phased array antenna signal generator and its implementation based on DDS |
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| CN201010050765.8A CN106342365B (en) | 2010-10-22 | 2010-10-22 | A kind of phased array antenna signal generator and its implementation based on DDS |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107918116A (en) * | 2017-10-23 | 2018-04-17 | 南京航空航天大学 | A kind of multiple target radar waveform design method based on radar and communications coexistence of systems |
| CN109061572A (en) * | 2018-06-21 | 2018-12-21 | 武汉滨湖电子有限责任公司 | DDS realizes the four-way T/R component realization method of digital phase shift as local oscillator |
| CN109714048A (en) * | 2019-01-08 | 2019-05-03 | 优利德科技(中国)股份有限公司 | A kind of output method for the DDS circuit and phase that phase mode is variable |
-
2010
- 2010-10-22 CN CN201010050765.8A patent/CN106342365B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107918116A (en) * | 2017-10-23 | 2018-04-17 | 南京航空航天大学 | A kind of multiple target radar waveform design method based on radar and communications coexistence of systems |
| CN107918116B (en) * | 2017-10-23 | 2021-01-19 | 南京航空航天大学 | Multi-target radar waveform design method based on coexistence of radar and communication system |
| CN109061572A (en) * | 2018-06-21 | 2018-12-21 | 武汉滨湖电子有限责任公司 | DDS realizes the four-way T/R component realization method of digital phase shift as local oscillator |
| CN109714048A (en) * | 2019-01-08 | 2019-05-03 | 优利德科技(中国)股份有限公司 | A kind of output method for the DDS circuit and phase that phase mode is variable |
| CN109714048B (en) * | 2019-01-08 | 2024-05-31 | 优利德科技(中国)股份有限公司 | DDS circuit with phase mode changeable and phase output method |
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