CN104460817A - High-stability power control circuit and method for common-mode temperature compensation demodulation - Google Patents
High-stability power control circuit and method for common-mode temperature compensation demodulation Download PDFInfo
- Publication number
- CN104460817A CN104460817A CN201410554437.XA CN201410554437A CN104460817A CN 104460817 A CN104460817 A CN 104460817A CN 201410554437 A CN201410554437 A CN 201410554437A CN 104460817 A CN104460817 A CN 104460817A
- Authority
- CN
- China
- Prior art keywords
- power
- circuit
- common
- detection
- demodulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention provides a high-stability power control circuit for common-mode temperature compensation demodulation. The high-stability power control circuit comprises a power modulator, an amplifier circuit, a directional coupler, a demodulator, a power reference generation circuit and an error summing circuit. The demodulator comprises a pair of demodulation pipes. One of the demodulation pipes extracts radio frequency output signals, and the other demodulation pipe is arranged at a reference level output by the power reference generation circuit. The two demodulation pipes conduct positive demodulation on the reference level and coupled radio frequency signals respectively at the same time. Common-mode integral difference is conducted on the two demodulation signals through the error summing circuit. The error summing circuit outputs signals to drive the power modulator. The high-stability power control circuit and method for common-mode temperature compensation demodulation have the advantages that control over the temperature by the power is high in stability and accurate, the circuit is simple and easy to implement, and the cost is low.
Description
Technical field
The present invention relates to technical field of measurement and test, particularly a kind of common-mode temperature compensates the high stable power control circuit of detection, also relates to the high stable Poewr control method that a kind of common-mode temperature compensates detection.
Background technology
Along with the development of electronic technology, the particularly development and apply of New System weaponry, has higher requirement to the characteristics of signals in modern signal source.For high-sensitivity atomic magnetometer system, nonmagnetic atom sensor (atomic air chamber) is the core component units of constrained system critical nature, the high-power RF pumping signal needing to have high stability is to meet the technical requirement that its electrodless discharge and whole system work in coordination with steady operation, effective elevator system truly detects/technical capability of sensing external environment changes of magnetic field and overall efficiency, thus the growth-promoting signal source of high-power high stable.
In current radio-frequency signal generator, power controls to be commonly auto level control (ALC) system, it realizes block diagram as shown in Figure 1, this ALC system is primarily of power reference circuit for generating, detecting circuit, error summing circuit, power modulators, amplifier circuit composition, datum sends data by the CPU in power reference circuit for generating and produces, detecting circuit extracts the size of radio frequency output signal, obtaining current power and error expected is sued for peace by contrasting with datum, going regulating power modulator to realize the control of power.
This control system has adapted to the power control requirements of radio-frequency signal generator, for which providing stable, Poewr control method accurately, has been widely used in the power control system of various universal signal generation class.
In the ALC system shown in above-mentioned Fig. 1, due to the temperature characterisitic of wave detector, under different temperatures, the voltage swing of wave detector to equal-wattage detection is different, detecting circuit there occurs change, by the effect of ALC close-loop feedback, radio-frequency signal output power also there occurs change, by the wave detector temperature variation stability of output power signal of having brought the change of output signal power to have a strong impact on, the short-term stability of this its power of control method, more than 5%, cannot meet the requirement to power high stable system.
Summary of the invention
The present invention proposes a kind of high stable power control circuit and the method that common-mode temperature compensates detection, solves the power excursion that in prior art, detection tube temperature characterisitic is introduced, the problem causing RF signal power degree of stability not satisfy the demands.
Technical scheme of the present invention is achieved in that
A kind of common-mode temperature compensates the high stable power control circuit of detection, comprise: power modulators, amplifier circuit, directional coupler, wave detector, power reference circuit for generating, error summing circuit, described wave detector comprises a pair detection tube, wherein a road detection tube extracts radio frequency output signal, another road detection tube is arranged on the datum place that described power reference circuit for generating exports, two-way detection tube is respectively to datum and the positive detection simultaneously of coupled RF signal, two-way rectified signal asks poor by error summing circuit common mode integration, error summing circuit output signal driving power modulator.
Alternatively, above-mentioned a pair detection tube is in same encapsulation.
The high stable power control circuit of detection is compensated based on above-mentioned common-mode temperature; present invention also offers the high stable Poewr control method that a kind of common-mode temperature compensates detection; increase by a road detection at datum place; utilize a pair detection tube to datum and the positive detection simultaneously of coupled RF signal; two-way rectified signal asks poor by common mode integration, driving power modulator.
The invention has the beneficial effects as follows:
(1) power control temperature degree of stability is high, control is accurate;
(2) circuit simple, easily realize, cost is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is existing auto level control system principle diagram;
Fig. 2 is the high stable power control circuit theory diagram that common-mode temperature of the present invention compensates detection.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides high stable power control circuit and method that a kind of common-mode temperature compensates detection, utilize the temperature characterisitic of a pair detection tube to realize radio-frequency signal output power degree of stability and be less than 5 ‰, and then reach RF signal power high stable ability.
As shown in Figure 2, the high stable power control circuit that a kind of common-mode temperature of the present invention compensates detection comprises: power modulators, amplifier circuit, directional coupler (not shown), wave detector, power reference circuit for generating, error summing circuit, above-mentioned wave detector comprises a pair detection tube.
Mention above, traditional ALC system cannot reach the requirement of power high stable, the present invention is by improving ALC loop, increase by a road detection at datum place, wherein a road detection tube extracts radio frequency output signal, another road detection tube is arranged on the datum place that power reference circuit for generating exports, namely utilize a pair detection tube to datum and the positive detection simultaneously of coupled RF signal, datum is herein preset power level, data from CPU are converted into datum by high performance DAC, DAC temperature characterisitic ± 20ppm/ DEG C, far away higher than the requirement of whole system to power temperature high stable, two-way detection asks poor by common mode integration, driving power modulator, reach the object controlling radio frequency output signal power, due to power detection pipe temperature profile, i.e. detection size varies with temperature and changes, utilize now the detection simultaneously of a pair detection tube to the drift of the radio frequency power output compensating detection tube temperature characterisitic and cause, two detection tubes at the same temperature its temperature characterisitic can be cancelled out each other, that removes detection tube and cause radio frequency power output fluctuation because of temperature characterisitic, substantially improve the ability of power temperature degree of stability.Preferably, above-mentioned a pair detection tube is in same encapsulation.
When Pre-set reference level becomes large, sue for peace through common-mode error, the voltage of driving power modulator will become large, the radiofrequency signal entering amplifier becomes large, in the working range of linearity of amplifier, radio frequency power output also can become large, at this moment also can be increased by the detecting circuit of RF-coupled end, when following the voltage of reference voltage detection equal etc. the voltage of RF-coupled detection, under whole loop maintains a constant state, under ensureing that radio frequency power output is stabilized in a steady state, vice versa.
When radio frequency output signal power becomes large, the voltage that radiofrequency signal goes out through overcoupling post-detection increases, and when datum is constant, is sued for peace by common-mode error, the voltage of driving power modulator diminishes, enter amplifier RF signal to diminish, in the working range of linearity of amplifier, when namely amplifier does not also enter state of saturation, whole radio frequency output signal power diminishes, by the effect of close-loop feedback, maintain the stable of radio frequency power output, vice versa.
The high stable power control circuit of detection is compensated based on above-mentioned common-mode temperature, the invention allows for the high stable Poewr control method that a kind of common-mode temperature compensates detection, increase by a road detection at datum place, utilize a pair detection tube to datum and the positive detection simultaneously of coupled RF signal, datum is herein preset power level, data from CPU are converted into datum by high performance DAC, DAC temperature characterisitic ± 20ppm/ DEG C, far away higher than the requirement of whole system to power temperature high stable, two-way detection asks poor by common mode integration, driving power modulator.
Common-mode temperature of the present invention compensates high stable power control circuit and the method for detection, has the features such as power control temperature degree of stability is high, control is accurate, circuit is simple and easy to realization, cost is low.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. the high stable power control circuit of a common-mode temperature compensation detection, comprise: power modulators, amplifier circuit, directional coupler, wave detector, power reference circuit for generating, error summing circuit, it is characterized in that, described wave detector comprises a pair detection tube, wherein a road detection tube extracts radio frequency output signal, another road detection tube is arranged on the datum place that described power reference circuit for generating exports, two-way detection tube is respectively to datum and the positive detection simultaneously of coupled RF signal, two-way rectified signal asks poor by error summing circuit common mode integration, error summing circuit output signal driving power modulator.
2. a kind of common-mode temperature as claimed in claim 1 compensates the high stable power control circuit of detection, and it is characterized in that, described a pair detection tube is in same encapsulation.
3. one kind compensates the control method of the high stable power control circuit of detection based on common-mode temperature described in claim 1; it is characterized in that; increase by a road detection at datum place; utilize a pair detection tube to datum and the positive detection simultaneously of coupled RF signal; two-way rectified signal asks poor by common mode integration, driving power modulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410554437.XA CN104460817A (en) | 2014-10-10 | 2014-10-10 | High-stability power control circuit and method for common-mode temperature compensation demodulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410554437.XA CN104460817A (en) | 2014-10-10 | 2014-10-10 | High-stability power control circuit and method for common-mode temperature compensation demodulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104460817A true CN104460817A (en) | 2015-03-25 |
Family
ID=52907034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410554437.XA Pending CN104460817A (en) | 2014-10-10 | 2014-10-10 | High-stability power control circuit and method for common-mode temperature compensation demodulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104460817A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901751A (en) * | 2015-05-07 | 2015-09-09 | 深圳市鼎阳科技有限公司 | Temperature compensation method and device for radio frequency equipment |
| CN106341086A (en) * | 2016-08-17 | 2017-01-18 | 中国电子科技集团公司第四十研究所 | Deep amplitude modulation circuit based on threshold judgment, and amplitude modulation method |
| CN107102301A (en) * | 2017-03-28 | 2017-08-29 | 石家庄信科微波技术有限公司 | A kind of novel microwave power precision Control Technology |
| CN110687959A (en) * | 2019-08-15 | 2020-01-14 | 鹤壁天海电子信息系统有限公司 | Power control device and control circuit thereof, integral comparator and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146669A (en) * | 1995-04-27 | 1997-04-02 | 索尼公司 | Power control circuit or transmission equipment |
| EP0834987A2 (en) * | 1996-10-01 | 1998-04-08 | Nokia Mobile Phones Ltd. | A diode detector |
| CN102981113A (en) * | 2011-12-26 | 2013-03-20 | 中国电子科技集团公司第四十一研究所 | High-accuracy high-linearity high-temperature-stability dynamic calibration source system |
| CN103558895A (en) * | 2013-10-28 | 2014-02-05 | 中国电子科技集团公司第四十一研究所 | Variable power reference source circuit with national standard and design method |
-
2014
- 2014-10-10 CN CN201410554437.XA patent/CN104460817A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146669A (en) * | 1995-04-27 | 1997-04-02 | 索尼公司 | Power control circuit or transmission equipment |
| EP0834987A2 (en) * | 1996-10-01 | 1998-04-08 | Nokia Mobile Phones Ltd. | A diode detector |
| CN102981113A (en) * | 2011-12-26 | 2013-03-20 | 中国电子科技集团公司第四十一研究所 | High-accuracy high-linearity high-temperature-stability dynamic calibration source system |
| CN103558895A (en) * | 2013-10-28 | 2014-02-05 | 中国电子科技集团公司第四十一研究所 | Variable power reference source circuit with national standard and design method |
Non-Patent Citations (1)
| Title |
|---|
| 赵习智: "微波信号源功率控制技术", 《科技信息》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901751A (en) * | 2015-05-07 | 2015-09-09 | 深圳市鼎阳科技有限公司 | Temperature compensation method and device for radio frequency equipment |
| CN106341086A (en) * | 2016-08-17 | 2017-01-18 | 中国电子科技集团公司第四十研究所 | Deep amplitude modulation circuit based on threshold judgment, and amplitude modulation method |
| CN107102301A (en) * | 2017-03-28 | 2017-08-29 | 石家庄信科微波技术有限公司 | A kind of novel microwave power precision Control Technology |
| CN110687959A (en) * | 2019-08-15 | 2020-01-14 | 鹤壁天海电子信息系统有限公司 | Power control device and control circuit thereof, integral comparator and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104460817A (en) | High-stability power control circuit and method for common-mode temperature compensation demodulation | |
| CN103838287B (en) | A kind of linear voltage regulator of offset zero point dynamic conditioning | |
| CN104297702A (en) | Measurement method and device of Bell-Bloom self-modulation three-axis magnetic field | |
| KR101842712B1 (en) | Monitoring apparatus and method for wireless power transmitter | |
| CN103001627B (en) | Quartz-crystal resonance frequency fine adjustment control system | |
| KR102570373B1 (en) | Microwave output device and plasma processing apparatus | |
| CN103206990A (en) | Capacitive electromagnetic flowmeter | |
| CN104597955B (en) | The adjusting apparatus of two-way radio frequency power supply and method | |
| US11885869B2 (en) | Smart automatic frequency control apparatus based on digital control | |
| CN110297122B (en) | Magnetic modulation sensor overrange measuring method based on frequency model | |
| WO2013145143A1 (en) | Power transmitting apparatus | |
| CN103728496A (en) | Antenna tuner impedance detection method based on phase detection | |
| CN110412334B (en) | Digital zero-flux leakage current sensor | |
| CN202614174U (en) | High-performance displacement sensor | |
| CN105388348B (en) | A kind of enhanced autobalance bridge and its method for realizing open-loop compensation | |
| CN210090656U (en) | Current standard device based on quantum precision measurement | |
| CN112241132A (en) | Control device and method for scanning speed of quadrupole mass spectrometer | |
| CN103364616A (en) | Feedback magnetic isolation direct current sensor | |
| CN103529096A (en) | Oxygen partial pressure sensor signal processing circuit | |
| CN103558895A (en) | Variable power reference source circuit with national standard and design method | |
| JP4527151B2 (en) | Modem equipment | |
| US20180342984A1 (en) | Envelope-tracking current bias circuit with offset cancellation function | |
| CN203535139U (en) | A novel dynamic test circuit for a tuning fork crystal | |
| CN109856457B (en) | Self-adaptive load impedance detection system and method | |
| CN204555994U (en) | A kind of twin shaft high precision weak magnetic survey module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |