CN107561510A - A kind of Vector Modulation circuit based on I/Q orthogonal mixers - Google Patents
A kind of Vector Modulation circuit based on I/Q orthogonal mixers Download PDFInfo
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- CN107561510A CN107561510A CN201710621849.4A CN201710621849A CN107561510A CN 107561510 A CN107561510 A CN 107561510A CN 201710621849 A CN201710621849 A CN 201710621849A CN 107561510 A CN107561510 A CN 107561510A
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Abstract
The present invention is a kind of Vector Modulation circuit based on I/Q orthogonal mixers, is related to signal phasor modulation technique.It using the Vector Modulation circuit of the form, can be offseted with radar radio-frequency leakage signal, improve receive-transmit isolation, thus, the patent can be applied in single antenna continuous wave radar, pathfinder.The implementation method of the invention is that, using I/Q orthogonal mixers+phase shifter combinations circuit structure, when the intermediate frequency I/Q pins zero frequency of prime I/Q orthogonal mixers works, its I/Q tuning characteristic is similar to vector modulator；Rear class is further added by phase shifter, and phase compensation is carried out to signal path.By I/Q orthogonal mixers+phase shifter combinations structure, circuit obtains the Vector Modulation of three dimensions (I, Q, Φ), and modulation system is flexible, and modulation accuracy is high, reduces the complexity of high band Vector Modulation circuit.
Description
Technical field
The invention belongs to signal phasor modulation technique.
Background technology
With to the demand more and more higher such as Radar Miniaturization, lightness, low-power consumption, the transmitting-receiving of single antenna continuous wave radar
Work simultaneously, there is theoretically no range hole；It is peak power to launch mean power, need to only carry the device of smaller power
Part, it is easy to solid state to design；Signal power is small, reduces Radar interception probability, improves interference free performance.
However, single antenna working method causes transmission signal directly to leak into receiving channel, deteriorate receiver sensitivity,
Make receiver front end saturation, or even jamming receiver, this turns into the primary factor for restricting the development of single antenna continuous wave radar.
At present, cancellation techniques are to improve the most promising technology of single antenna continuous wave radar receive-transmit isolation.It is right
The general principle for the technology that disappears be using Vector Modulation circuit produce all the way with leakage signal constant amplitude it is anti-phase offset signal, pass through letter
Number synthesis realization offset.In terms of the document of retrieval, the external achievement in research about cancellation techniques comes into practical stage, and
The country starts late to this research, and relevant report is confined to the research of theoretical side more, and utility system is few.
The key for breaking through cancellation techniques is to realize high stable, high-precision Vector Modulation circuit.And Vector Modulation circuit
Core devices are vector modulators.At present, domestic device supplier relies in vector modulator field almost blank, chip buying
Import.Abroad, the device supplier of vector modulator is less, and type of device is mainly digital vector modulator and I/Q vectors
Modulator, wherein, digital vector modulator working frequency range is higher (X, Ku, K-band etc.), and purchase cost is expensive, and it up to more than ten
Individual discrete digital controlled signal, the continuity of phase shift can not be realized, and volume is larger, it is not easy of integration；And I/Q vector modulators
Technology maturation, commercial chip is selectively big, and its control signal is continuous level signal, can realize phase-shifting amplitude-modulated continuous
Property, but working frequency range is relatively low (L, S-band etc.).According to circuit-level from grinding mode, then index performance, R＆D cycle etc. be difficult to by
, there is technical risk, and integrated level is low in control, be not easy to minimize, commercialization.
For above-mentioned analysis, the present invention, which introduces, a kind of is implemented in being adjusted based on conversion architecture vector for X-band adaptive cancellation
Circuit processed, the circuit implementations are novel, using I/Q orthogonal mixers+phase shifter circuit structure, realize vector modulator work(
Energy.
The content of the invention
The present invention uses I/Q orthogonal mixers+phase shifter combinations circuit structure, realizes the Vector Modulation for working in X-band,
Applied to adaptive cancellation platform, closed loop is formed with digital signal circuit, obtains and preferably offsets effect.This method is for list
The development of antenna continuous wave radar, pathfinder has highly application value.
The present invention implementation method be：Radiofrequency signal realizes frequency conversion with two-way intermediate-freuqncy signal by I/Q orthogonal mixers, this
Place's intermediate-freuqncy signal is provided by digital signal circuit, for the zero frequency signal with certain amplitude and phase property.When I/Q is orthogonal mixed
During the intermediate frequency I/Q pins zero frequency work of frequency device, its I/Q tuning characteristic is similar to vector modulator.The tune of I/Q orthogonal mixers
Humorous characteristic is produced by mixing unit, and the tuning characteristic of vector modulator is produced by I/Q roads bi-phase modulated unit.But I/Q is orthogonal
The characteristics of tuning bandwidth that frequency mixer inherits vector modulator is wide, modulation accuracy is high, so as to realize Vector Modulation.In I/Q just
Increase phase shifter after handing over frequency mixer, carry out numerical control phase shift, it is therefore an objective to which phase compensation is carried out to signal path.Therefore, by I/Q just
Frequency mixer+phase shifter combinations structure is handed over, circuit obtains the Vector Modulation of three dimensions (I, Q, Φ), and modulation system is flexible, adjusts
Precision height processed.
The present invention realizes the Vector Modulation of signal using the frequency conversion device of mature and reliable, and circuit form is simple, integrated
Degree is high, and tuning bandwidth is wide, modulation accuracy is high, solves height frequency range vector modulator and grinds the unfavorable factor brought certainly.
Brief description of the drawings
Accompanying drawing 1 is the implementation process figure of the present invention.
Embodiment
The present invention is based on I/Q orthogonal mixers+phase shifter combinations circuit structure, and implementation process figure is referring to accompanying drawing 1.
Concrete methods of realizing is：Input radio frequency signal is set to vi(t)=Asin (ω t), input i/q signal are believed for zero frequency
Number, i.e., DC level, amplitude are set to A1, A2, and radiofrequency signal is exported after I/Q orthogonal mixers and is set to vo(t), can obtain：OrderWhereinAbove formula abbreviation obtains：
vo(t)=kA [sin (ω t) cos θ+cos (ω t) sin θ]=kAsin (ω t+ θ)
It can thus be concluded that after i/q signal is modulated, radio frequency signal amplitude changes k times, phase change θ.
I/Q orthogonal mixers are followed by phase shifter, as the 3rd dimension, carry out numerical control phase shift, and phase is carried out to signal path
Position compensation, its phase shift value typically compares fixation, relevant with circuit layout.In adaptive cancellation platform, Vector Modulation circuit with
Digital signal circuit forms closed loop, i/q signal will by digital signal circuit Real-time Feedback, so as to realize three dimensions of signal (I,
Q, Φ) Vector Modulation.
Claims (1)
1. a kind of Vector Modulation circuit based on I/Q orthogonal mixers, it is characterized in that：Vector Modulation circuit is by the orthogonal mixing of I/Q
Device and phase shifter composition；Wherein I/Q orthogonal mixers are used for the Vector Modulation to input signal, and radiofrequency signal carries width with two-way
The zero frequency signal of degree phase information is mixed by I/Q orthogonal mixers, realizes the tune to radio frequency signal amplitude and phase
System；Phase shifter is used for the phase compensation to signal path, so as to obtain the Vector Modulation of three dimensions (I, Q, Φ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710621849.4A CN107561510A (en) | 2017-07-27 | 2017-07-27 | A kind of Vector Modulation circuit based on I/Q orthogonal mixers |
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| CN201710621849.4A CN107561510A (en) | 2017-07-27 | 2017-07-27 | A kind of Vector Modulation circuit based on I/Q orthogonal mixers |
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| CN107561510A true CN107561510A (en) | 2018-01-09 |
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| CN201710621849.4A Pending CN107561510A (en) | 2017-07-27 | 2017-07-27 | A kind of Vector Modulation circuit based on I/Q orthogonal mixers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981509A (en) * | 2019-03-18 | 2019-07-05 | 深圳市鼎阳科技有限公司 | A kind of method and apparatus that amplitude and phase are adjusted |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010098343A (en) * | 2000-04-20 | 2001-11-08 | 이종삼 | Coupled interference cancellation system for wideband repeaters in a cellular system |
| CN102347778A (en) * | 2011-08-05 | 2012-02-08 | 中国舰船研究设计中心 | Self-adapting interference cancellation device and debugging method thereof |
| CN104569930A (en) * | 2014-12-29 | 2015-04-29 | 北京理工雷科电子信息技术有限公司 | Leakage signal cancellation circuit of linear frequency modulation continuous wave radar |
| CN105119662A (en) * | 2015-09-10 | 2015-12-02 | 湖南迈克森伟电子科技有限公司 | Radio anti-interference equipment |
-
2017
- 2017-07-27 CN CN201710621849.4A patent/CN107561510A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010098343A (en) * | 2000-04-20 | 2001-11-08 | 이종삼 | Coupled interference cancellation system for wideband repeaters in a cellular system |
| CN102347778A (en) * | 2011-08-05 | 2012-02-08 | 中国舰船研究设计中心 | Self-adapting interference cancellation device and debugging method thereof |
| CN104569930A (en) * | 2014-12-29 | 2015-04-29 | 北京理工雷科电子信息技术有限公司 | Leakage signal cancellation circuit of linear frequency modulation continuous wave radar |
| CN105119662A (en) * | 2015-09-10 | 2015-12-02 | 湖南迈克森伟电子科技有限公司 | Radio anti-interference equipment |
Non-Patent Citations (4)
| Title |
|---|
| W. PHILIBERT ET AL: "A subharmonically pumped I/Q vector modulator MMIC for Ka band satellite communication", 《2000 IEEE RADIO FREQUENCY INTEGRATED CIRCUITS (RFIC) SYMPOSIUM DIGEST OF PAPERS (CAT. NO.00CH37096)》 * |
| 任永杰: "数字型矢量调制器的设计研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
| 周俊杰等: "I/Q调制器的矢量调制误差补偿方法研究", 《仪器仪表学报》 * |
| 苏龙阁: "调频连续波雷达射频对消技术研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981509A (en) * | 2019-03-18 | 2019-07-05 | 深圳市鼎阳科技有限公司 | A kind of method and apparatus that amplitude and phase are adjusted |
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