CN104579213A - Radio-frequency power regulation method and radio-frequency power amplifier - Google Patents
Radio-frequency power regulation method and radio-frequency power amplifier Download PDFInfo
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- CN104579213A CN104579213A CN201310509190.5A CN201310509190A CN104579213A CN 104579213 A CN104579213 A CN 104579213A CN 201310509190 A CN201310509190 A CN 201310509190A CN 104579213 A CN104579213 A CN 104579213A
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- 230000033228 biological regulation Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 239000010453 quartz Substances 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000013078 crystal Substances 0.000 abstract 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 13
- 238000003199 nucleic acid amplification method Methods 0.000 description 13
- 238000013519 translation Methods 0.000 description 4
- 238000003079 width control Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000001636 atomic emission spectroscopy Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000918 plasma mass spectrometry Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The invention discloses a radio-frequency power regulation method and a radio-frequency power amplifier. The method comprises the following steps: firstly, enabling a power MOS tube of a power amplifier to work under an on-off state; then, after converting the output pulse of a quartz-crystal oscillator into a driving signal with adjustable pulse width, driving the gate pole of the MOS tube; finally, realizing the stable adjustment of output power by adjusting the pulse width of the driving signal of the gate pole of the power MOS tube and the primary access voltage value of an unbalanced transformer. In addition, the radio-frequency power amplifier comprises a control unit, a driving signal generation unit, a power amplifying unit and a voltage controllable direct-current power supply. The radio-frequency power amplifier realizes the control for the radio-frequency output power by adjusting the pulse width of the driving signal and the output voltage of the voltage controllable direct-current power supply. The invention realizes the control for the radio-frequency output power by adopting the method of combining the pulse width adjustment of the driving signal and the power supply voltage adjustment of the direct-current main power supply, so that the reliability and stability of power control are enhanced.
Description
Technical field
The present invention relates to a kind of radio-frequency power regulation method and radio-frequency power amplifier, belong to electricity field.
Background technology
In modern analysis and test instrument, ICP-MS, ICP-AES (OES) are the analytical and testing instruments of some precisions, and they can simultaneously nearly all element on sense cycle table fast, becomes the strongest generally acknowledged elementary analysis means.In this quasi-instrument, its common feature all employ radio frequency generator exactly, i.e. radio-frequency power supply, and full solid-sate radio frequency power supply is the development trend of radio-frequency power supply.The existing principal character being operated in the full solid-sate radio frequency power supply that its swashs under mode is that power device is operated in magnification region, the adjustment realizing power output by regulating the amplitude of drive singal.The greatest problem of this radio-frequency power supply is because power device is operated in Linear Amplifer region, and the operating efficiency of system is lower, dissipation is large, cooling system is huge.
Summary of the invention
The object of the invention is just to provide a kind of radio-frequency power regulation method and radio-frequency power amplifier, by the power amplifier regulating the pulsewidth of drive singal and the supply power voltage of the main power power-supply of direct current to realize radio frequency output power.This radio-frequency power amplifier is applicable to the analytical instrument such as inductivity coupled plasma mass spectrometry (ICP-MS), inductive coupling plasma emission spectrograph (ICP-AES (OES)).
First the power MOS pipe of power amplifier is operated on off state by radio-frequency power regulation method provided by the invention; Then, after the output pulse of quartz oscillator being converted into the drive singal of adjustable pulse width, the gate pole of metal-oxide-semiconductor is driven; The stable regulation of power output is realized finally by the pulsewidth of regulating power metal-oxide-semiconductor gate electrode drive signals and the elementary access magnitude of voltage of balun transformer.
The present invention also provides a kind of radio-frequency power amplifier, comprises control unit, voltage controllable direct current power supply, drive singal generating unit and power amplification unit, wherein:
Control unit, is connected with voltage controllable direct current power supply and drive singal generating unit, and the voltage of regulation voltage controllable direct current power supply exports, and regulates the duty ratio of drive singal generating unit output signal;
Voltage controllable direct current power supply, is connected with control unit, provides variable output voltage;
Drive singal generating unit, is connected with control unit, for regulating the pulsewidth of drive singal;
Power amplification unit, is connected with voltage control DC power supply and drive singal generating unit, and the electromotive power output of receiver voltage controllable direct current power supply carries out power amplification, and exports the radio-frequency power after amplifying.
Described control unit is made up of drive singal pulse width control circuit, voltage controllable direct current power supply control circuit, radio frequency power output Acquisition Circuit and radio-frequency power amplifier Working Status Monitoring circuit, power control unit realizes the setting of radio frequency power output by the setting pulsewidth of drive singal and the output voltage of voltage controllable direct current power supply, and realizes the closed-loop control of radio frequency power output by the real output value of Real-time Collection radio-frequency power, the pulsewidth of adjustment drive singal.
Described drive singal generating unit is connected and composed successively by quartz oscillator, triangular wave translation circuit, comparator and driving stage power amplification circuit.Wherein triangular wave translation circuit is input to an input of comparator, and another input of comparator inputs controlled threshold voltage.
The power device of this radio-frequency power amplifier is operated on off state, therefore can ensure its operating efficiency.This radio-frequency power amplifier operating efficiency is high, structure simple, it is reliable to control.In order to strengthen the reliability and stability that power controls, have employed drive singal pulse-width regulated and regulating the method combined to realize the control of radio frequency power output with the main power power-supply supply power voltage of direct current.Radio-frequency power amplifier radio-frequency power conversion efficiency is high, frequency stability is high and power stability is high.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
Fig. 1 is the circuit block diagram of radio-frequency power amplifier of the present invention.
Fig. 2 is the circuit block diagram of drive singal generating unit.
Fig. 3 is the power control principle figure of radio-frequency power amplifier of the present invention.
In figure, 1. input signal, 2. pulse width control voltage signal, 3. the output voltage signal of control unit, 4. the output signal of drive singal unit, 5. radio frequency power output, 6. pulse signal, 7. drive singal, 8.MOS manages, 9. voltage controllable direct current power supply, 10. transformer, 11. loads, 12. driving stage power amplification circuits.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
First the power MOS pipe of power amplifier is operated on off state by radio-frequency power regulation method of the present invention; Then, after the output pulse of quartz oscillator being converted into the drive singal of adjustable pulse width, the gate pole of metal-oxide-semiconductor is driven; The stable regulation of power output is realized finally by the pulsewidth of regulating power metal-oxide-semiconductor gate electrode drive signals and the elementary access magnitude of voltage of balun transformer.
The radio-frequency power amplifier that the present embodiment provides, as shown in Figure 1, comprises control unit, voltage controllable direct current power supply, drive singal generating unit and power amplification unit, wherein:
Control unit, is connected with voltage controllable direct current power supply and drive singal generating unit, and the voltage of regulation voltage controllable direct current power supply exports, and regulates the duty ratio of drive singal generating unit output signal; Control unit is made up of drive singal pulse width control circuit, voltage controllable direct current power supply control circuit, radio frequency power output Acquisition Circuit and radio-frequency power amplifier Working Status Monitoring circuit, power control unit realizes the setting of radio frequency power output by the setting pulsewidth of drive singal and the output voltage of voltage controllable direct current power supply, and realizes the closed-loop control of radio frequency power output by the real output value of Real-time Collection radio-frequency power, the pulsewidth of adjustment drive singal.
Voltage controllable direct current power supply, is connected with control unit, provides variable output voltage;
Drive singal generating unit, is connected with control unit, for regulating the pulsewidth of drive singal;
Power amplification unit, is connected with voltage control DC power supply and drive singal generating unit, and the electromotive power output of receiver voltage controllable direct current power supply carries out power amplification, and exports the radio-frequency power after amplifying.
Control unit Real-time Collection operating state input signal 1; regulated by the duty ratio of the output signal 4 of output pulse width control voltage signal 2 pairs of drive singal generating units; and control according to the operating state of operating state input signal 1 radio frequency power amplifier; when operating state input signal 1 occurs abnormal; timely radio frequency power amplifier is protected; when radio frequency power output 5 fluctuates, regulate in time.The voltage that control unit controls controllable direct current power supply by output voltage signal 3 exports.Power MOS pipe 8 in driving pulse 4 pairs of power amplification units that drive singal generating unit exports drives.
As shown in Figure 2, drive singal generating unit is connected and composed successively by quartz oscillator, triangular wave translation circuit, comparator (pulse-width modulation circuit) and driving stage amplifying circuit.The output shaping pulse of quartz oscillator is duty ratio is after the square wave of 50%, and be transformed into a pair phase 180 degree, triangular wave that amplitude is equal through triangular wave translation circuit, triangular wave is input to an input of comparator.Another input of comparator 12 inputs controlled threshold voltage, pulse-width modulation is carried out to triangular wave, modulated that rear output a pair duty ratio is equal, the pulse signal of phase 180 degree, pulse signal carries out completing the output that high-power MOS tube carries out drive singal after power amplification through driving stage power amplification circuit.
As shown in Figure 3, under this radio-frequency power amplifier is operated in push-pull mode.A pair duty ratio is equal, the pulse signal 16 of phase 180 degree carries out being that a pair duty ratio is equal, the drive singal 7 of phase 180 degree after power amplification through driving stage power amplification circuit 12.Drive singal 7 drives the gate pole of two-way power MOS pipe 8 respectively, the elementary power output by voltage controllable direct current power supply of two-way metal-oxide-semiconductor 8 driving transformer 9 is modulated into the radio-frequency power identical with the output frequency of quartz oscillator, by the secondary coupling output of transformer.The amplitude of drive singal 7 is enough high, makes power MOS pipe 8 be operated on off state, thus the operating efficiency of radio-frequency power amplifier can be made higher.When carrying out radio frequency power output setting, first control unit sets the output voltage of voltage controllable direct current power supply, after voltage stabilization to be output, again the duty ratio of the driving pulse that drive singal generating unit exports is set, thus completing the initial setting of radio frequency power output. setpoint power output is higher, driving pulse duty ratio is larger, and the output voltage of voltage controllable direct current power supply is higher, and vice versa.Load 11 remains 50 ohm.Export to make stable output power, control unit is by the measuring-signal of the radio frequency power output in Real-time Collection operating state input signal, compare with set point, if exceed error allowed band, then the real-time control by regulating the duty ratio of drive singal 7 to realize radio frequency power stage.
Claims (1)
1. a radio-frequency power regulation method, is characterized in that: first the power MOS pipe of power amplifier is operated on off state; Then, after the output pulse of quartz oscillator being converted into the drive singal of adjustable pulse width, the gate pole of metal-oxide-semiconductor is driven; The stable regulation of power output is realized finally by the pulsewidth of regulating power metal-oxide-semiconductor gate electrode drive signals and the elementary access magnitude of voltage of balun transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310509190.5A CN104579213A (en) | 2013-10-24 | 2013-10-24 | Radio-frequency power regulation method and radio-frequency power amplifier |
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| CN201310509190.5A CN104579213A (en) | 2013-10-24 | 2013-10-24 | Radio-frequency power regulation method and radio-frequency power amplifier |
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| CN104579213A true CN104579213A (en) | 2015-04-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115112747A (en) * | 2022-06-11 | 2022-09-27 | 瑞莱谱(杭州)医疗科技有限公司 | ICP-MS radio frequency ignition calibration method |
| CN115420792A (en) * | 2022-06-11 | 2022-12-02 | 瑞莱谱(杭州)医疗科技有限公司 | Approach type ICP-MS power adjusting method |
| CN117471431A (en) * | 2023-12-28 | 2024-01-30 | 武汉市品持科技有限公司 | Laser radar optical power automatic gain adjustment method, device and system |
| WO2024125229A1 (en) * | 2022-12-12 | 2024-06-20 | 深圳飞骧科技股份有限公司 | Radio frequency switch circuit and radio frequency chip |
| CN118449538A (en) * | 2024-04-30 | 2024-08-06 | 深圳市瀚强科技股份有限公司 | Radio frequency signal modulation circuit, radio frequency signal generating device and radio frequency power supply equipment |
-
2013
- 2013-10-24 CN CN201310509190.5A patent/CN104579213A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115112747A (en) * | 2022-06-11 | 2022-09-27 | 瑞莱谱(杭州)医疗科技有限公司 | ICP-MS radio frequency ignition calibration method |
| CN115420792A (en) * | 2022-06-11 | 2022-12-02 | 瑞莱谱(杭州)医疗科技有限公司 | Approach type ICP-MS power adjusting method |
| WO2024125229A1 (en) * | 2022-12-12 | 2024-06-20 | 深圳飞骧科技股份有限公司 | Radio frequency switch circuit and radio frequency chip |
| CN117471431A (en) * | 2023-12-28 | 2024-01-30 | 武汉市品持科技有限公司 | Laser radar optical power automatic gain adjustment method, device and system |
| CN117471431B (en) * | 2023-12-28 | 2024-05-14 | 武汉市品持科技有限公司 | Laser radar optical power automatic gain adjustment method, device and system |
| CN118449538A (en) * | 2024-04-30 | 2024-08-06 | 深圳市瀚强科技股份有限公司 | Radio frequency signal modulation circuit, radio frequency signal generating device and radio frequency power supply equipment |
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Application publication date: 20150429 |