CN106505901B - A kind of linear-resonance combined type hyperfrequency inverter - Google Patents
A kind of linear-resonance combined type hyperfrequency inverter Download PDFInfo
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- CN106505901B CN106505901B CN201610914662.9A CN201610914662A CN106505901B CN 106505901 B CN106505901 B CN 106505901B CN 201610914662 A CN201610914662 A CN 201610914662A CN 106505901 B CN106505901 B CN 106505901B
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The present invention discloses a kind of linear-resonance combined type hyperfrequency inverter, belongs to wireless communication (energy transmission) and power conversion technology field.The structure includes linear amplifier, resonance inverter and its resonance drive circuit, linear amplifier and resonance inverter are connected to load after output end is in parallel, form main power circuit, input of the output voltage of main power circuit as resonance drive circuit is used as resonance inverter power switch tube after the phase shift of resonance drive circuit decayingDriving.Linear amplifier and switch class A amplifier A have been carried out parallel connection by the present invention, so that it be made to have had both, the Linear Amplifer linearity is good, and output waveform is high-quality and the high-efficient advantage of switching amplifier.
Description
Technical field
The present invention relates to a kind of linear-resonance combined type hyperfrequency inverters, belong to wireless communication (energy transmission) and function
Rate converter technique field.
Background technique
With the rapid development of electronic technology, it wirelessly communicates with wireless energy transmission technology using more and more extensive.Mesh
Preceding microwave wireless electric energy transmitting system structure diagram is as shown in Figure 1.Wherein solid state power generators module realizes direct current function
Rate directly determines the energy size and radiation signal quality of radiating antenna radiation to the transformation of radio-frequency power.It is common at present
Solid state power generators are divided into linear amplifier and switch class A amplifier A.Linear amplifier mainly includes Class A, Class B
With Class AB etc..Its advantage includes: that bandwidth is higher, and the linearity is good, and output signal quality is higher etc., however its efficiency usually compared with
It is low.By taking Class AB amplifier as an example, efficiency is up to 78.5%.The remarkable advantage for switching class A amplifier A is that efficiency is higher,
It theoretically can achieve 100%.Switching class A amplifier A mainly includes E class, DE class, F class etc..Wherein E class A amplifier A structure and control
System is simple, and application is relatively broad, and circuit topology is as shown in Figure 2.E class A amplifier A advantage specifically includes that power switch tube exports
Capacitor can be absorbed by external capacitive, while can realize Sofe Switch；Driving method is that mode, driving are reliable altogether.However E class is amplified
Device switch tube voltage stress is larger, generally reaches 4--6 times of input voltage, and in the larger occasion of power grade, (such as radio energy is passed
It is defeated), device for power switching is required harsh.And output linearity degree is low, waveform quality is poor.It improves to obtain based on E class A amplifier A
Class Φ2Resonance inverter is usually applied to hyperfrequency DC-DC transformation, is connected branch by LC switching tube both ends are in parallel
The second harmonic trap of road composition, while input choke induction being replaced with resonant inductance.ClassΦ2The electricity of resonance inverter
Road topology is as shown in Figure 3.Its major advantage is as follows: 1) switch tube voltage stress is lower (about 2--3 times of input voltage)；2) real
Sofe Switch is showed, has been lost low；However output waveform quality is equally poor.
Summary of the invention
The present invention is directed to the defect and deficiency of solid state power generators, to guarantee its preferable output waveform quality and higher
Conversion efficiency, propose a kind of linear-resonance combined type hyperfrequency inverter, the inverter is by linear amplifier and high-frequency resonant
Inverter is constituted in output end parallel connection, so that it is integrated with the feature that the linear amplifier linearity is good and resonance inverter efficiency is high,
A kind of Class Φ suitable for the parallel-connection structure is proposed simultaneously2The resonance drive circuit of resonance inverter realizes linear amplifier
It is in parallel with the high efficiency of resonance inverter.
The present invention is to solve its technical problem to adopt the following technical scheme that
A kind of linear-resonance combined type hyperfrequency inverter, including linear amplifier, resonance inverter and its resonant drive
Circuit, linear amplifier and resonance inverter are connected to load after output end is in parallel, form main power circuit, main power circuit
Input of the output voltage as resonance drive circuit, be used as resonance inverter function after the phase shift of resonance drive circuit decaying
The driving of rate switching tube Q；
The linear amplifier includes the first output power transistors T1With the second output power transistors T2, bias constant current
Source Ibias, the first biasing diode D1With the second biasing diode D2, buffer stage resistance R3, buffer stage transistor T3, the first partial pressure
Sampling resistor R1With the second partial pressure sampling resistor R2And voltage regulator and voltage amplifier stage；Wherein, the first output power is brilliant
Body pipe T1As upper tube, the second output power transistors T2As down tube, the first output power transistors T1Collector and input electricity
Potential source VccConnection, the first output power transistors T1Emitter and the second output power transistors T2Emitter connection, second
Output power transistors T2Emitter and load resistance RLOne end connection, the second output power transistors T2Collector with
Input voltage source VeeConnection, load resistance RLThe other end ground connection；Offset constant current source IbiasOutput end and the first biasing diode D1
Anode connection, first biasing diode D1Anode and the first output power transistors T1Base stage connection, first biasing two poles
Pipe D1Cathode and second biasing diode D2Anode connection, second biasing diode D2Cathode be connected to the second output work
Rate transistor T2Base stage, the second output power transistors T2Base stage and buffer stage transistor T3Emitter be connected；First point
Piezoresistance R1With the second divider resistance R2Load resistance R is connected in parallel on after series connectionLBoth ends, wherein the second divider resistance R2One end ground connection,
The other end is connected to the reverse input end of voltage regulator, and the output end of voltage regulator and the input terminal of voltage amplifier stage connect
It connects, the output end and buffer stage transistor T of voltage amplifier stage3Base stage connection, buffer stage resistance R3One end is connected to buffer stage crystalline substance
Body pipe T3Base stage, the other end is connected to buffer stage transistor T3Emitter；
The resonance inverter includes input resonant inductance LF, second harmonic trap inductance L2F, second harmonic trap capacitor
C2F, power switch tube parallel connection outside resonant capacitance CF, outputting inductance LS, output capacitance CSWith resonance inverter power switch tube Q；
Wherein, second harmonic trap inductance L2FWith second harmonic trap capacitor C2FAfter series connection simultaneously with resonance inverter power switch tube Q
Connection；Input resonant inductance LFOne end and input voltage source VinAnode connection, the leakage of the other end and resonance inverter power switch tube Q
Pole connection；Power switch tube parallel connection outside resonant capacitance CFIt is in parallel with resonance inverter power switch tube Q；Outputting inductance LSWith it is defeated
Capacitor C outSAfter series connection, one end is connected to the drain electrode of resonance inverter power switch tube Q, the other end and output loading RLIt is connected；
The resonance drive circuit includes input stage resistance Rdi, input stage inductance Ldi, output stage inductance Ldo, output stage electricity
Hinder RdoWith intermediate capacitance Cd, the input parasitic capacitance C of resonance inverter power switch tube Qiss, wherein input stage resistance RdiOne end
With load resistance RLUngrounded end be connected, the other end and input stage inductance LdiOne end be connected, input stage inductance LdiIt is another
End and intermediate capacitance CdUpper end connect, intermediate capacitance CdLower end ground connection；Output stage inductance LdoOne end is connected to intermediate capacitance Cd
Upper end, the other end and output stage resistance RdoConnection, output stage resistance RdoThe other end and resonance inverter power switch tube
Grid is connected, the input parasitic capacitance C of resonance inverter power switch tubeissIt is connected in parallel on the grid of resonance inverter power switch tube Q
Between pole and source electrode.
Beneficial effects of the present invention are as follows:
Linear amplifier and switch class A amplifier A have been subjected to parallel connection, so that it is good so that it has been had both the Linear Amplifer linearity,
Output waveform is high-quality and the high-efficient advantage of switching amplifier.Meanwhile it switching class A amplifier A and using Class Φ2Resonance is inverse
Become device and effectively reduces the voltage stress of switching tube compared with traditional E class A amplifier A.Using resonance drive circuit, realize humorous
The inverter that shakes exports and linear amplifier exports same phase, guarantees the parallel connection of its high efficiency.
Detailed description of the invention
Fig. 1 is microwave wireless electric energy transmitting system structure diagram.
Fig. 2 is Class E amplifier circuit configuration figure.
Fig. 3 is Class Φ2Resonant inverter circuit structure chart.
Fig. 4 is linear-resonance combined type hyperfrequency inverter topology circuit structure diagram.
Fig. 5 is voltage control Class AB linear amplifier circuit structure chart.
Fig. 6 is Class Φ2Resonance inverter power switch tube both ends equivalent impedance circuit diagram.
Fig. 7 is different output capacitance CSLaod network transmission function amplitude-frequency characteristic figure under value.
Fig. 8 is Class Φ2Resonance inverter switching tube both ends impedance Bode diagram.
Fig. 9 is resonance drive circuit structure chart.
Figure 10 is resonance drive circuit transmission function Bode diagram.
Figure 11 is resonance drive circuit input impedance Bode diagram.
Figure 12 (a) is Class Φ2Resonance inverter power switch tube both end voltage vdsSimulation waveform；Figure 12 (b) is
ClassΦ2Resonance inverter power switch tube current idSimulation waveform.
Figure 13 (a) is Class Φ2Resonance inverter exports electric current ireSimulation waveform；Figure 13 (b) flows through load resistance
Electric current ioSimulation waveform；Figure 13 (c) is linear amplifier output electric current ilinSimulation waveform.
Figure 14 (a) is Class Φ2Resonance inverter power switch tube drives voltage vgsSimulation waveform；Figure 14 (b) is
ClassΦ2Resonance inverter power switch tube drain-source voltage vdsSimulation waveform.
Specific embodiment
The invention is described in further details below with reference to attached drawing.
Linear-resonance combined type hyperfrequency inverter of the invention, including linear amplifier, resonance inverter and its resonance
Driving circuit, linear amplifier and resonance inverter are connected to load after output end is in parallel, form main power circuit, main power
Input of the output voltage of circuit as resonance drive circuit is used as resonance inversion after the phase shift of resonance drive circuit decaying
The driving of device power switch tube Q.The driving circuit is exported using linear amplifier as input, is realized continuously adjustable phase shift and is declined
It is driven after subtracting as resonance inverter, realizes that resonance inverter output and linear amplifier export same-phase.Meanwhile resonant drive
The input impedance of circuit is designed as resistive (induction reactance angle or capacitive reactance angle very little) and its input impedance compared to load impedance (50 Ω)
It is approximately open circuit.
Linear amplifier uses the voltage-controlled Class AB amplifier of high linearity, and the linearity is good, can be absorbed
The higher harmonic current of resonance inverter output, so as to improve output waveform quality；Resonance inverter is using efficient
ClassΦ2Resonance inverter, and whole power are provided, including output power and resonance driving power, improve whole efficiency.
Meanwhile the resonance drive circuit of resonance inverter is proposed, realize the output of resonance inverter and the output of linear amplifier
Same-phase guarantees the parallel connection of its high efficiency.
The operating mode of the topology is as described below: linear amplifier works first, and output power is by linear amplifier at this time
It provides, after linear amplifier output reaches stable state, the input of resonance inverter driving circuit reaches stable state at this time, in resonance inversion
After device driving signal reaches stable state, resonance inverter enters working condition, as resonance inverter reaches stable state, output power
Increase, the output power of linear amplifier reduces, and final bearing power and driving power are by there is resonance inverter offer, at this time
Reach peak efficiency.Complete machine maintenance works in this case.
Fig. 4 gives the circuit topology of linear-resonance combined type hyperfrequency inverter, and topology is by linear amplifier and efficiently
The high-frequency resonant inverter of rate is constituted in output end parallel connection.
Linear amplifier uses voltage-controlled Class AB amplifier；High-frequency resonant inverter uses Class Φ2Resonance
Inverter.A kind of resonance drive circuit is proposed for the topology simultaneously, and it is same with linear amplifier to realize that resonance inverter is exported
Phase output guarantees the parallel connection of its high efficiency.
A. voltage-controlled Class AB amplifier principle analysis
The circuit topology of voltage-controlled Class AB amplifier is as shown in Figure 5.First output power transistors T1With
Two output power transistors T2Constitute the power output stage of linear amplifier；Offset constant current source IbiasConjunction is provided for linear amplifier
Suitable current offset；First biasing diode D1With the second biasing diode D2For eliminating the first output power transistors T1With
Second output power transistors T2Intermodulation distortion；R1And R2It is output voltage voPartial pressure sampling resistor, the signal adopted with
Output voltage reference signal vrefIt compares, error signal is sent into voltage regulator；Since output stage is emitter follower shape
Formula can only amplify electric current, cannot amplify voltage, therefore a voltage amplifier stage is introduced between voltage regulator and output stage.It is real
In the circuit of border, voltage amplifier stage is realized by same phase operational amplification circuit；Buffer stage transistor T3With buffer stage resistance R3Constitute buffering
Grade, its main feature is that input impedance is big, output impedance is small, is increased for isolation voltage amplifying stage and output stage with obtaining enough voltage
Benefit.
B.ClassΦ2Resonance inverter analysis design
According to Class Φ as shown in Figure 32The available resonance inverter power switch of the circuit topology of resonance inverter
The equivalent impedance circuit at pipe both ends is as shown in Figure 6.ClassΦ2Resonance inverter is improved on the basis of E class A amplifier A
It obtains.By second harmonic trap inductance L2F, second harmonic trap capacitor C2FIts resonance frequency of the series resonant tank of composition is set
At twice of working frequency, second harmonic trap is constituted, filters out the secondary of resonance inverter power switch tube Q drain-source voltage
Harmonic component reduces the electricity of resonance inverter power switch tube Q so that the voltage shaping to be become to the shape of similar trapezoidal wave
Compression.Input resonant inductance L is cooperateed with simultaneouslyF, power switch tube parallel connection outside resonant capacitance CFThe resonant network of composition helps function
Rate switching tube realizes ZVS (Sofe Switch: Zero-Voltage-Switching), reduces switching loss, improves efficiency.It is negative
Carry impedance RLWith outputting inductance LS, output capacitance CSLaod network is formed, wherein LSAnd CSEquivalent impedance X after series connectionSTable
Show.Laod network adjusts output power certain inhibiting effect to higher hamonic wave simultaneously.
ClassΦ2The fundametal compoment and minute quantity that the output of resonance inverter contains only working frequency are (since output filters
Effect) higher harmonic components, therefore consider fundametal compoment energy transmission.For fundametal compoment, in given output power
(Po), input voltage (Vin) in the case of divide impedance XSValue:
Identical X is obtained at working frequencySDifferent LSAnd CSCombination have it is countless.For different output capacitance CSIt takes
The amplitude-frequency characteristic for being worth lower laod network transmission function is as shown in Figure 7.Output capacitance CSIt is smaller its to harmonic wave filter out effect it is stronger,
Output waveform quality is better.Capacitor receiving voltage peak is higher simultaneously, and working condition becomes unreliable, therefore when practical selection
Consideration should be traded off.
The impedance expression of resonant network:
Wherein: L2FFor second harmonic trap inductance；C2FFor second harmonic trap capacitor；LFTo input resonant inductance；CF' be
Resonant capacitance (including switching tube parasitic capacitance and power switch tube parallel connection outside resonant capacitance of the equivalent parallel at switching tube both ends
CF)；ω is work angular frequency；
It can be seen from the above, the impedance should meet the following conditions:
1) in fundamental wave (working frequency fs=100MHz) and triple-frequency harmonics at obtain maximum；
2) minimum is obtained at second harmonic；
As described above, wherein L2F, C2FIt is designed as second harmonic trap, resonance frequency is twice of working frequency, i.e., full
Foot:
The impedance Z of resonant networkFMaximum denominator be equal to 0 present in, solve two positive root ω1(2πf1) and ω3(2
πf3), enable f1=fs, f1=3fs.So as to solve following each element value:
C is chosen generally according to experienceF' capacitance, it is notable that its value should be greater than power switch tube spur performance
Capacitor.Meanwhile power switch tube turn off when its hourglass source electrode impedance ZDSFor the parallel connection of resonance and filtering impedance, needed after in parallel
To input resonant inductance LF, power switch tube parallel connection outside resonant capacitance CFIt is finely adjusted amendment, Z after amendmentDSAmplitude-frequency characteristic
It is as shown in Figure 8 with phase-frequency characteristic.
C. resonance drive circuit analysis design
Due to the topology be surveyed in high-frequency ac it is in parallel, therefore it is required that resonance inverter output and linear amplifier it is defeated
Same phase out.To solve the above problems, the invention proposes Class Φ2The resonance drive circuit of resonance inverter, circuit topology
As shown in Figure 9.Drive of the driving circuit by main power output voltage after certain phase shift and decaying as resonance inverter
Dynamic signal.To ensure that the same phase of output of its output and linear amplifier.Simultaneously as the driving circuit is in parallel with load,
It therefore it is required that its input impedance is larger, and should be approximately resistive.At this point, the input current and resonance inverter of driving circuit
Current in phase is exported, driving power is also provided by resonance inverter, to reduce linear amplifier processing power as far as possible, is guaranteed
Whole greater efficiency.The Bode diagram of the transmission function of the resonance drive circuit is as shown in Figure 10；Input impedance Bode diagram is as schemed
Shown in 11.
The specific design example of of the invention one is as follows: Class Φ2Resonance inverter input terminal voltage Vin=48V；Load
50 Ω of impedance；Switching frequency fs=100MHz；Resonance inverter power switch tube is LDMOS, and inductance used is sky in topology
Core inductance, capacitor are patch capacitor.The numerical value of component such as table 1.Each component of Class AB linear amplifier is ideal
Device.
1 Class Φ of table2Inverter component parameters value
| LF | 16nH | L2F | 9.6nH | LS | 330nH |
| CF | 70pF | C2F | 65pF | CS | 10pF |
| Rdi | 90Ω | Ldo | 135nH | Cd | 15pF |
| Ldi | 13nH | Rdo | 50Ω | — | — |
Figure 12 (a), Figure 12 (b), Figure 13 (a), Figure 13 (b), Figure 13 (c), Figure 14 (a), Figure 14 (b) are set forth mainly
Simulation waveform.Figure 12 (a) gives Class Φ2Resonance inverter power switch tube both end voltage vdsSimulation waveform；Figure 12
(b) Class Φ is given2Resonance inverter power switch tube current idSimulation waveform realizes Sofe Switch.Figure 13 (a) is provided
Class Φ2Resonance inverter exports electric current ireSimulation waveform, Figure 13 (b) give the electric current i for flowing through load resistanceoEmulation
Waveform diagram, Figure 13 (c) give linear amplifier output electric current ilinSimulation waveform.Linear amplifier exports current first harmonics point
Very little is measured, contains only third-harmonic component substantially, bearing power and driving power are all by Class Φ2Resonance inverter provides.
Figure 14 (a) gives Class Φ2Resonance inverter power switch tube drives voltage vgsSimulation waveform, Figure 14 (b) give
ClassΦ2Resonance inverter power switch tube drain-source voltage vdsSimulation waveform.Voltage stress about 105V is input voltage
2.2 times of (48V).
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (5)
1. a kind of linear-resonance combined type hyperfrequency inverter, including linear amplifier, resonance inverter and its resonant drive electricity
Road, linear amplifier and resonance inverter are connected to load after output end is in parallel, form main power circuit, main power circuit
Input of the output voltage as resonance drive circuit is used as resonance inverter power after the phase shift of resonance drive circuit decaying
The driving of switching tube Q；
The linear amplifier includes the first output power transistors T1With the second output power transistors T2, offset constant current source
Ibias, the first biasing diode D1With the second biasing diode D2, buffer stage resistance R3, buffer stage transistor T3, first partial pressure adopt
Sample resistance R1With the second partial pressure sampling resistor R2And voltage regulator and voltage amplifier stage；Wherein, the first output power crystal
Pipe T1As upper tube, the second output power transistors T2As down tube, the first output power transistors T1Collector and input voltage
Source VccConnection, the first output power transistors T1Emitter and the second output power transistors T2Emitter connection, second is defeated
Power transistor T out2Emitter and load resistance RLOne end connection, the second output power transistors T2Collector with it is defeated
Enter voltage source VeeConnection, load resistance RLThe other end ground connection；Offset constant current source IbiasOutput end and the first biasing diode D1's
Anode connection, the first biasing diode D1Anode and the first output power transistors T1Base stage connection, first biasing diode
D1Cathode and second biasing diode D2Anode connection, second biasing diode D2Cathode be connected to the second output power
Transistor T2Base stage, the second output power transistors T2Base stage and buffer stage transistor T3Emitter be connected；First partial pressure
Resistance R1With the second divider resistance R2Load resistance R is connected in parallel on after series connectionLBoth ends, wherein the second divider resistance R2One end ground connection, separately
One end is connected to the reverse input end of voltage regulator, and the output end of voltage regulator and the input terminal of voltage amplifier stage connect,
The output end and buffer stage transistor T of voltage amplifier stage3Base stage connection, buffer stage resistance R3One end is connected to buffer stage crystal
Pipe T3Base stage, the other end is connected to buffer stage transistor T3Emitter；
The resonance inverter includes input resonant inductance LF, second harmonic trap inductance L2F, second harmonic trap capacitor C2F, function
Rate switching tube parallel connection outside resonant capacitance CF, outputting inductance LS, output capacitance CSWith resonance inverter power switch tube Q；Wherein,
Second harmonic trap inductance L2FWith second harmonic trap capacitor C2FIt is in parallel with resonance inverter power switch tube Q after series connection；Input
Resonant inductance LFOne end and input voltage source VinAnode connection, the other end are connect with the drain electrode of resonance inverter power switch tube Q；
Power switch tube parallel connection outside resonant capacitance CFIt is in parallel with resonance inverter power switch tube Q；Outputting inductance LSWith output capacitance CS
After series connection, one end is connected to the drain electrode of resonance inverter power switch tube Q, the other end and load resistance RLUngrounded end phase
Even；
It is characterized in that, the resonance drive circuit includes input stage resistance Rdi, input stage inductance Ldi, output stage inductance Ldo, defeated
Grade resistance R outdoWith intermediate capacitance Cd, the input parasitic capacitance C of resonance inverter power switch tube Qiss, wherein input stage resistance
RdiOne end and load resistance RLUngrounded end be connected, the other end and input stage inductance LdiOne end be connected, input stage inductance Ldi
The other end and intermediate capacitance CdUpper end connect, intermediate capacitance CdLower end ground connection；Output stage inductance LdoDuring one end is connected to
Between capacitor CdUpper end, the other end and output stage resistance RdoConnection, output stage resistance RdoThe other end and resonance inverter power
The grid of switching tube Q is connected, the input parasitic capacitance C of resonance inverter power switch tube QissBe connected in parallel on its grid and source electrode it
Between.
2. a kind of linear-resonance combined type hyperfrequency inverter according to claim 1, which is characterized in that described linear
Amplifier uses voltage-controlled Class AB amplifier.
3. a kind of linear-resonance combined type hyperfrequency inverter according to claim 1, which is characterized in that the resonance
Inverter is high-frequency resonant inverter.
4. a kind of linear-resonance combined type hyperfrequency inverter according to claim 3, which is characterized in that the high frequency
Resonance inverter uses Class Φ2Resonance inverter.
5. a kind of linear-resonance combined type hyperfrequency inverter according to claim 1, which is characterized in that the resonance
The input impedance of driving circuit is open circuit compared to load impedance.
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| CN108123553B (en) * | 2018-01-15 | 2023-08-22 | 华南理工大学 | High-frequency high-power wireless power transmission system |
| CN108321943B (en) * | 2018-01-15 | 2023-07-18 | 华南理工大学 | Wireless power transmission system based on switching tube common-ground inverter |
| CN108233547B (en) * | 2018-01-15 | 2024-04-12 | 华南理工大学 | Wireless power transmission system based on low-stress inverter |
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| US9859847B2 (en) * | 2014-09-02 | 2018-01-02 | Samsung Electronics Co., Ltd | Parallel combined output linear amplifier and operating method thereof |
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| CN104124874A (en) * | 2014-07-16 | 2014-10-29 | 广州金升阳科技有限公司 | Ultrahigh-frequency isolating resonant converter |
| CN105207491A (en) * | 2015-10-15 | 2015-12-30 | 南京航空航天大学 | High-frequency DC-DC convertor and resonant drive circuit thereof |
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