CN113093614A - Microwave generating circuit and microwave generating device - Google Patents
Microwave generating circuit and microwave generating device Download PDFInfo
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- CN113093614A CN113093614A CN202110364868.XA CN202110364868A CN113093614A CN 113093614 A CN113093614 A CN 113093614A CN 202110364868 A CN202110364868 A CN 202110364868A CN 113093614 A CN113093614 A CN 113093614A
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- operational amplifier
- microwave
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- power supply
- circuit
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
Abstract
The invention discloses a microwave generating circuit and a microwave generating device, wherein the microwave generating circuit comprises a power supply circuit, a first operational amplifying circuit, a second operational amplifying circuit, a single chip microcomputer, a microwave chip and a power driving circuit, wherein the input end of the power supply circuit is connected with a power supply unit, the output end of the power supply circuit is connected to the single chip microcomputer and the first operational amplifying circuit, a first cloud amplifying circuit is connected to the microwave chip, and the single chip microcomputer is connected to the microwave chip through the second operational amplifying circuit and the power driving circuit. The voltage of the power supply unit is stabilized by the power supply circuit, the output voltage of the power supply circuit supplies power to the microwave chip after passing through the first operational amplifier circuit, meanwhile, the output voltage of the power supply circuit conforms to the working voltage of the single chip microcomputer, the normal work of the single chip microcomputer is ensured, and the output voltage of the single chip microcomputer is controlled by adjusting the control program parameters of the single chip microcomputer, so that the output power and the output frequency of the microwave chip can be adjusted.
Description
Technical Field
The invention belongs to the field of microwave circuits, and particularly relates to a microwave generating circuit and a microwave generating device.
Background
The cigarette can generate smoke when burning, because the temperature is higher when burning, the highest temperature can exceed 800 ℃, the smoke generated under the high temperature condition can contain a large amount of harmful substances, the smoke is diffused in the air to form second-hand smoke, and the second-hand smoke can cause harm to people around smokers. And the cigarette has open fire when burning, and some smokers do not put out a fire thoroughly with the cigarette end after smoking, arouse the conflagration easily, have higher potential safety hazard.
With the appearance of non-combustible electronic cigarette, the majority of smokers have more choices. The electronic cigarette is a smoking set designed by taking 'heating without burning' as the idea, and compared with the traditional cigarette, the electronic cigarette is heated at a working temperature far lower than the temperature of the traditional cigarette during burning, and the electronic cigarette is heated only to give off tobacco fragrance and meet the requirements of users. The working temperature of the non-combustible heating electronic cigarette is usually within the range of 250-350 ℃, and the tobacco leaves can not be combusted when the temperature is lower than 350 ℃, so that harmful substances generated when the traditional cigarette is combusted are avoided, meanwhile, second-hand smoke can not be formed in the air, and the harm to surrounding people is reduced.
A microwave radio frequency circuit is arranged in an existing heating non-combustion electronic cigarette, microwaves are emitted through the microwave radio frequency circuit, and the tobacco medium is heated by the microwaves to generate smoke. The existing microwave radio frequency circuit has higher power supply voltage, and a booster circuit is needed when the battery is used for supplying power, so that the volume of a discrete component is larger, the volume of the electronic cigarette is increased, and the use by a user is inconvenient.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a microwave generating circuit and a microwave generating device, which can adjust the output microwave power and frequency and reduce the power supply voltage of the microwave generating circuit.
In order to solve the technical problems, the invention adopts the technical scheme that:
a microwave generating circuit comprises a power supply circuit, a first operational amplifier circuit, a second operational amplifier circuit, a single chip microcomputer U4, a microwave chip U6 and a power driving circuit, wherein the input end of the power supply circuit is connected with a power supply unit, the first output end of the power supply circuit is connected to a gate voltage pin Vg of the microwave chip U6 through the first operational amplifier circuit, the second output end of the power supply circuit is connected to an input port VCC of the single chip microcomputer U4, an output port DAC of the single chip microcomputer U4 is connected to a tuning voltage pin Vt of the microwave chip U6 through the second operational amplifier circuit, and an output port IO1 of the single chip microcomputer U4 is connected to an enabling voltage pin En of the microwave chip U6 and a drain voltage pin Vd of the microwave chip U6 through the power.
Preferably, the first operational amplifier circuit comprises a first operational amplifier U3, a non-inverting input terminal of the first operational amplifier U3 is connected to a first output terminal of the power supply circuit through a resistor R5, an inverting input terminal of the first operational amplifier U3 is connected to an output terminal of the first operational amplifier U3, and an output terminal of the first operational amplifier U3 is connected to a gate voltage pin Vg of the microwave chip U6.
Preferably, the non-inverting input terminal of the first operational amplifier U3 is grounded via a resistor R6, and the output terminal of the first operational amplifier U3 is grounded via a capacitor C5.
Preferably, the second operational amplifier circuit comprises a second operational amplifier U5, the non-inverting input terminal of the second operational amplifier U5 is connected to the output port DAC of the single chip microcomputer U4 through a resistor R7, the inverting input terminal of the second operational amplifier U5 is connected to the ground through a resistor R1, the inverting input terminal of the second operational amplifier U5 is connected to the output terminal of the second operational amplifier U5 through a resistor R2, and the output terminal of the second operational amplifier U5 is connected to the tuning voltage pin Vt of the microwave chip U6.
Preferably, the positive power supply of the second operational amplifier U5 is connected to the power supply unit, the negative power supply of the second operational amplifier U5 is grounded, the output end of the second operational amplifier U5 is grounded through the capacitor C6, and the output port DAC of the single chip microcomputer U4 is grounded through the resistor R8.
Preferably, the power driving circuit comprises a first field effect transistor Q1 and a second field effect transistor Q2, the source of the first field effect transistor Q1 is connected with the power supply unit, the gate of the first field effect transistor Q1 is connected to the drain of the second field effect transistor Q2, the drain of the first field effect transistor Q1 is connected to the drain voltage pin Vd of the microwave chip U6, the gate of the second field effect transistor Q2 is connected to the output port IO1 of the single chip microcomputer U4, and the source of the second field effect transistor Q2 is grounded.
Preferably, the source of the first fet Q1 is connected to the gate of the first fet Q1 via a resistor R3, the source of the second fet Q2 is connected to the gate of the second fet Q2 via a resistor R4, and the drain of the first fet Q1 is grounded via a capacitor C7.
Preferably, the power supply circuit includes a voltage stabilizing chip U1 and a negative voltage chip U2, an input terminal of the voltage stabilizing chip U1 is connected to the power supply unit, an input terminal of the voltage stabilizing chip U1 is grounded through a capacitor C1, an output terminal of the voltage stabilizing chip U1 is connected to an input terminal of the negative voltage chip U2 and an input terminal VCC of the single chip microcomputer U4, an output terminal of the voltage stabilizing chip U1 is grounded through a capacitor C2, an output terminal of the negative voltage chip U2 is connected to a non-inverting input terminal of the first operational amplifier U3 through a resistor R5, an input terminal of the negative voltage chip U2 is grounded through a capacitor C3, and an output terminal of the negative voltage chip U2 is grounded through.
Preferably, the microwave chip U6 includes a voltage controlled oscillator VCO, a low noise amplifier, a first power amplifier and a second power amplifier connected in sequence, and the first power amplifier and the second power amplifier are combined through a lange bridge.
Another object of the present invention is to provide a microwave generating apparatus, which comprises a battery and a microstrip line, and has a microwave generating circuit as claimed in any one of claims 1 to 9, wherein the battery is used as a power supply unit of the microwave generating circuit, and the microstrip line is connected to a radio frequency output pin POUT of a microwave chip U6 in the microwave generating circuit.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
The microwave power supply device has the advantages that the voltage of the power supply unit is stabilized by the power supply circuit, the output voltage of the power supply circuit is in accordance with the working voltage of the single chip microcomputer, the normal work of the single chip microcomputer is ensured, the output voltage of the single chip microcomputer is controlled by adjusting the control program parameters of the single chip microcomputer, the output power and the output frequency of the microwave chip can be adjusted, and finally, microwaves with adjustable frequency and adjustable power in a specified frequency range are output.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a circuit diagram of a microwave generating circuit of the present invention.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention introduces a microwave generating circuit, which includes a power supply circuit, a first operational amplifier circuit, a second operational amplifier circuit, a single chip microcomputer U4, a microwave chip U6, and a power driving circuit, wherein an input end of the power supply circuit is connected to a power supply unit, a first output end of the power supply circuit is connected to a gate voltage pin Vg of the microwave chip U6 through the first operational amplifier circuit, a second output end of the power supply circuit is connected to an input port VCC of the single chip microcomputer U4, an output port DAC of the single chip microcomputer U4 is connected to a tuning voltage pin Vt of the microwave chip U6 through the second operational amplifier circuit, and an output port IO1 of the single chip microcomputer U4 is connected to an enable voltage pin En of the microwave chip U6 and a drain voltage pin Vd of the microwave chip U6.
In the embodiment of the invention, the power supply unit is used for supplying power to the microwave generating circuit, the second output end of the power supply circuit is connected to the VCC of the input port of the singlechip U4, and the power supply circuit supplies power to the singlechip U4 after stabilizing the voltage of the power supply unit.
The single chip microcomputer U4 has a built-in control program, and can control the output voltage of the output port DAC of the single chip microcomputer U4 by adjusting parameters of the control program, such as parameters of duty ratio, frequency sweep, time and the like. The output port DAC of the single chip microcomputer U4 is DA output, the output port DAC of the single chip microcomputer U4 can be controlled to output continuous 0-3.3V voltage through a control program, the output voltage of the output port DAC of the single chip microcomputer U4 is amplified by the second operational amplification circuit and then supplies power to the microwave chip U6, the voltage amplified by the second operational amplification circuit accords with the working voltage of the microwave chip U6, and the output voltage of the output port DAC of the single chip microcomputer U4 is adjustable, so that the output frequency of the microwave chip U6 can be controlled.
The single chip microcomputer U4 has an output port IO1, and the single chip microcomputer U4 controls the power driving circuit through the output port IO 1. When the output port IO1 of the single chip microcomputer U4 is at a low level, the enable voltage pin En of the microwave chip U6 and the drain voltage pin Vd of the microwave chip U6 receive a low level signal; when the output port IO1 of the single chip microcomputer U4 is at a high level, the enable voltage pin En of the microwave chip U6 and the drain voltage pin Vd of the microwave chip U6 receive a high level signal. According to the invention, the output of the microwave chip U6 can be controlled according to a signal received by an enabling voltage pin En of the microwave chip U6, and the work and the stop of the microwave chip U6 are controlled by outputting a PWM wave through an output port IO1 of a singlechip U4, so that the output power of the microwave chip U6 is controlled.
In the embodiment of the invention, the working voltage of the microwave chip U6 is 8V, the working frequency of the microwave chip U6 is 8W, the output power of the microwave chip U6 can be adjusted by controlling the duty ratio of the input signal to the enable voltage pin En of the microwave chip U6, and the output frequency of the microwave chip U6 can be adjusted by controlling the voltage of the tuning voltage pin Vt of the microwave chip U6. The output power of the microwave chip U6 is adjustable within 8W, and the output frequency of the microwave chip U6 is adjustable within the range of 2.4-2.5 GHz.
In the embodiment of the present invention, the first operational amplifier circuit includes a first operational amplifier U3, a non-inverting input terminal of the first operational amplifier U3 is connected to a first output terminal of the power supply circuit through a resistor R5, an inverting input terminal of the first operational amplifier U3 is connected to an output terminal of the first operational amplifier U3, and an output terminal of the first operational amplifier U3 is connected to a gate voltage pin Vg of the microwave chip U6. The positive power supply electrode of the first operational amplifier U3 is connected to the first output end of the power supply circuit, the negative power supply electrode of the first operational amplifier U3 is grounded, the non-inverting input end of the first operational amplifier U3 is grounded through a resistor R6, and the output end of the first operational amplifier U3 is grounded through a capacitor C6. The voltage of the power supply unit is stabilized by the power supply circuit, amplified by the first operational amplifier circuit and provided to the microwave chip U6.
In the embodiment of the invention, the second operational amplifier circuit comprises a second operational amplifier U5, the non-inverting input terminal of the second operational amplifier U5 is connected to the output port DAC of the single chip microcomputer U4 through a resistor R7, the inverting input terminal of the second operational amplifier U5 is connected to the ground through a resistor R1, the inverting input terminal of the second operational amplifier U5 is connected to the output terminal of the second operational amplifier U5 through a resistor R2, and the output terminal of the second operational amplifier U5 is connected to the tuning voltage pin Vt of the microwave chip U6. The positive electrode of a power supply of the second operational amplifier U5 is connected to the power supply unit, the negative electrode of the power supply of the second operational amplifier U5 is grounded, the output end of the second operational amplifier U5 is grounded through a capacitor C6, and the DAC of the output port of the singlechip U4 is grounded through a resistor R8.
The output voltage of the DAC of the output port of the singlechip U4 is controlled by adjusting parameters of a built-in control program of the singlechip U4, the output voltage of the DAC of the output port of the singlechip U4 is provided to a tuning voltage pin Vt of the microwave chip U6 after passing through a second operational amplifier circuit, and the output frequency of the microwave chip U6 is adjusted.
In the embodiment of the invention, the power driving circuit comprises a first field effect transistor Q1 and a second field effect transistor Q2, wherein the source electrode of the first field effect transistor Q1 is connected with the power supply unit, the grid electrode of the first field effect transistor Q1 is connected to the drain electrode of the second field effect transistor Q2, the drain electrode of the first field effect transistor Q1 is connected to the drain electrode voltage pin Vd of the microwave chip U6, the grid electrode of the second field effect transistor Q2 is connected to the output port IO1 of the singlechip U4, and the source electrode of the second field effect transistor Q2 is grounded. The source of the first field effect transistor Q1 is connected to the gate of the first field effect transistor Q1 through a resistor R3, the source of the second field effect transistor Q2 is connected to the gate of the second field effect transistor Q2 through a resistor R4, and the drain of the first field effect transistor Q1 is grounded through a capacitor C7.
According to the invention, a first field effect transistor Q1 and a second field effect transistor Q2 are used in the power driving circuit, the grid electrode of the second field effect transistor Q2 is connected to the output port IO1 of the singlechip U4, the source electrode of the second field effect transistor Q2 is grounded, the voltage between the grid electrode and the source electrode of the second field effect transistor Q2 is controlled by controlling the level of the output port IO1 of the singlechip U4, and further the drain electrode output of the second field effect transistor Q2 is controlled. The drain electrode of the second field effect transistor Q2 is connected to the grid electrode of the first field effect transistor Q1, the source electrode of the first field effect transistor Q1 is connected with the power supply unit, the source electrode voltage of the first field effect transistor Q1 is fixed, the grid electrode voltage of the first field effect transistor Q1 is controlled by controlling the drain electrode output of the second field effect transistor Q2, the drain electrode output of the first field effect transistor Q1 is further controlled, the voltage of the enabling voltage pin En of the microwave chip U6 is controlled, and the output power of the microwave chip U6 is further controlled.
In the embodiment of the invention, the power supply circuit comprises a voltage stabilizing chip U1 and a negative voltage chip U2, the input end of the voltage stabilizing chip U1 is connected with the power supply unit, the input end of the voltage stabilizing chip U1 is grounded through a capacitor C1, the output end of the voltage stabilizing chip U1 is connected to the input end of the negative voltage chip U2 and the input end VCC of the singlechip U4, the output end of the voltage stabilizing chip U1 is grounded through a capacitor C2, the output end of the negative voltage chip U2 is connected to the non-inverting input end of the first operational amplifier U3 through a resistor R5, the input end of the negative voltage chip U2 is grounded through a capacitor C3, and the output end of the negative voltage chip U2 is.
The power supply circuit is provided with a voltage stabilizing chip and a negative voltage chip, so that the power supply circuit can output +3.3V voltage and accord with the working voltage of a single chip microcomputer, and the power supply circuit can also output-3.3V voltage which is amplified by the first operational amplifier circuit and then is used as the grid voltage of the microwave chip U6.
In the embodiment of the invention, the microwave chip U6 comprises a voltage controlled oscillator VCO, a low noise amplifier, a first power amplifier and a second power amplifier which are connected in sequence, and the first power amplifier and the second power amplifier are synthesized through a lange bridge.
The microwave chip U6 of the invention is provided with a voltage controlled oscillator VCO, and the output frequency can be adjusted by adjusting the input control voltage of the voltage controlled oscillator VCO. The microwave chip U6 has pin Vt, pin En, pin Vg, pin Vd, pin GND, pin POUT, wherein the pin Vt of the microwave chip U6 represents VCO tuning voltage, and the output frequency of the microwave chip U6 can be adjusted by controlling the voltage of the pin Vt of the microwave chip; pin En represents a VCO enabling voltage, which can control the operation and stop of the microwave chip U6, thereby controlling the output power of the microwave chip U6; pin POUT is an output pin of the microwave chip U6.
The embodiment of the invention discloses a microwave generating device, which comprises a battery and a microstrip line, wherein the microwave generating circuit is provided with the battery as a power supply unit of the microwave generating circuit, and the microstrip line is connected with a radio frequency output pin POUT of a microwave chip U6 in the microwave generating circuit.
The microwave chip U6 of the invention adopts 8V voltage for power supply, and the defect that the existing discrete component 28V power supply needs circuit boosting is eliminated. When the power supply device is used, two batteries can be connected in series to serve as a power supply unit for supplying power, the power supply unit provides 7.7-8.7V of voltage, and the voltage is stabilized by a power supply circuit and then outputs 3.3V of voltage of the work of the singlechip U4. After the microwave generating device starts to work, the radio frequency output pin POUT of the microwave chip U6 emits microwaves, and the microwaves are transmitted to a target medium through the microstrip line to heat the target medium.
In the embodiment of the invention, the microwave generating device is applied to the electronic cigarette, the electronic cigarette is provided with the microwave cavity, the microwave generating device is installed in the microwave cavity of the electronic cigarette, when the electronic cigarette works, the microwave generating device emits microwaves, and the microwaves act on the tobacco medium in the microwave cavity through the microstrip line to heat the tobacco medium and generate smoke.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (10)
1. A microwave generating circuit is characterized by comprising a power supply circuit, a first operational amplifier circuit, a second operational amplifier circuit, a single chip microcomputer U4, a microwave chip U6 and a power driving circuit, wherein the input end of the power supply circuit is connected with a power supply unit, the first output end of the power supply circuit is connected to a gate voltage pin Vg of a microwave chip U6 through the first operational amplifier circuit, the second output end of the power supply circuit is connected to an input port VCC of the single chip microcomputer U4, an output port DAC of the single chip microcomputer U4 is connected to a tuning voltage pin Vt of the microwave chip U6 through the second operational amplifier circuit, and an output port IO1 of the single chip microcomputer U4 is connected to an enable voltage pin En of the microwave chip U6 and a drain voltage pin Vd of the microwave chip U6 through the power driving.
2. The microwave generating circuit of claim 1, wherein the first operational amplifier circuit comprises a first operational amplifier U3, a non-inverting input terminal of the first operational amplifier U3 is connected to a first output terminal of the power supply circuit via a resistor R5, an inverting input terminal of the first operational amplifier U3 is connected to an output terminal of the first operational amplifier U3, and an output terminal of the first operational amplifier U3 is connected to a gate voltage pin Vg of the microwave chip U6.
3. A microwave generating circuit in accordance with claim 2 wherein the non-inverting input of the first operational amplifier U3 is connected to ground through resistor R6 and the output of the first operational amplifier U3 is connected to ground through capacitor C5.
4. A microwave generating circuit according to claim 1 characterised in that the second operational amplifier circuit comprises a second operational amplifier U5, the non-inverting input of the second operational amplifier U5 being connected to the output port DAC of the monolithic U4 via a resistor R7, the inverting input of the second operational amplifier U5 being connected to ground via a resistor R1, the inverting input of the second operational amplifier U5 being connected to the output of the second operational amplifier U5 via a resistor R2, the output of the second operational amplifier U5 being connected to the tuning voltage pin Vt of the microwave chip U6.
5. A microwave generating circuit according to claim 4, characterized in that the positive power supply of the second operational amplifier U5 is connected to the power supply unit, the negative power supply of the second operational amplifier U5 is grounded, the output terminal of the second operational amplifier U5 is grounded via the capacitor C6, and the DAC at the output port of the single chip U4 is grounded via the resistor R8.
6. The microwave generating circuit of claim 1, wherein the power driving circuit comprises a first fet Q1 and a second fet Q2, a source of the first fet Q1 is connected to the power supply unit, a gate of the first fet Q1 is connected to a drain of the second fet Q2, a drain of the first fet Q1 is connected to a drain voltage pin Vd of the microwave chip U6, a gate of the second fet Q2 is connected to an output port IO1 of the single-chip microcomputer U4, and a source of the second fet Q2 is grounded.
7. A microwave generating circuit as claimed in claim 6, characterized in that the source of the first FET Q1 is connected to the gate of the first FET Q1 via a resistor R3, the source of the second FET Q2 is connected to the gate of the second FET Q2 via a resistor R4, and the drain of the first FET Q1 is connected to ground via a capacitor C7.
8. The microwave generating circuit of claim 3, wherein the power circuit comprises a voltage regulator chip U1 and a negative voltage chip U2, an input terminal of the voltage regulator chip U1 is connected to the power supply unit, an input terminal of the voltage regulator chip U1 is grounded via a capacitor C1, an output terminal of the voltage regulator chip U1 is connected to an input terminal of the negative voltage chip U2 and an input terminal VCC of the single chip U4, an output terminal of the voltage regulator chip U1 is grounded via a capacitor C2, an output terminal of the negative voltage chip U2 is connected to the non-inverting input terminal of the first operational amplifier U3 via a resistor R5, an input terminal of the negative voltage chip U2 is grounded via a capacitor C3, and an output terminal of the negative voltage chip U2 is grounded via a capacitor C4.
9. A microwave generating circuit according to claim 1, wherein the microwave chip U6 includes a voltage controlled oscillator VCO, a low noise amplifier, a first power amplifier and a second power amplifier connected in sequence, and the first power amplifier and the second power amplifier are combined through a lange bridge.
10. A microwave generating device, comprising a battery and a microstrip line, characterized in that, a microwave generating circuit as claimed in any one of the above claims 1-9 is provided, the battery is used as a power supply unit of the microwave generating circuit, and the microstrip line is connected with a radio frequency output pin POUT of a microwave chip U6 in the microwave generating circuit.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110364868.XA CN113093614B (en) | 2021-04-02 | 2021-04-02 | Microwave generating circuit and microwave generating device |
| JP2022576068A JP7448262B2 (en) | 2021-04-02 | 2021-09-30 | Microwave generation circuit and microwave generator |
| PCT/CN2021/122198 WO2022205825A1 (en) | 2021-04-02 | 2021-09-30 | Microwave generating circuit and microwave generating device |
| KR1020227040551A KR20230007405A (en) | 2021-04-02 | 2021-09-30 | Microwave generating circuit and microwave generating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110364868.XA CN113093614B (en) | 2021-04-02 | 2021-04-02 | Microwave generating circuit and microwave generating device |
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| CN113093614A true CN113093614A (en) | 2021-07-09 |
| CN113093614B CN113093614B (en) | 2022-07-15 |
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| WO2022205825A1 (en) * | 2021-04-02 | 2022-10-06 | 北京航天雷特机电工程有限公司 | Microwave generating circuit and microwave generating device |
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| CN113093614B (en) | 2022-07-15 |
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