CN115671557A - Radio frequency signal generating circuit and electronic equipment - Google Patents
Radio frequency signal generating circuit and electronic equipment Download PDFInfo
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- CN115671557A CN115671557A CN202211351522.7A CN202211351522A CN115671557A CN 115671557 A CN115671557 A CN 115671557A CN 202211351522 A CN202211351522 A CN 202211351522A CN 115671557 A CN115671557 A CN 115671557A
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Abstract
The invention discloses a radio frequency signal generating circuit and electronic equipment. The radio frequency signal generating circuit includes: the power supply, the transformer, the control unit, the switch unit and the phase adjusting unit; the switch unit is connected with the control unit and is used for responding to the control signal of the control unit to be conducted; the primary coil of the transformer is respectively connected with the switch unit and the power supply, and the primary coil of the transformer is used for outputting a radio frequency signal to the secondary coil of the transformer when the switch unit is conducted; the phase adjusting unit is connected with the switch unit and used for adjusting the phase of the radio-frequency signal output by the transformer when the radio-frequency signal is output intermittently. The radio frequency signal generating circuit provided by the embodiment solves the problem that when the radio frequency signals are intermittently output by electronic equipment such as the existing cosmetic equipment, the output radio frequency signals have phase differences to influence the use experience.
Description
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a radio frequency signal generating circuit and an electronic device.
Background
The existing beauty equipment needs to adopt radio frequency signals, but the radio frequency signals output by the existing beauty equipment have phase difference, and when the radio frequency signals of the beauty equipment are intermittently output, the radio frequency signals with the phase difference can seriously affect the use experience.
Disclosure of Invention
The invention provides a radio frequency signal generating circuit and electronic equipment, and aims to solve the problem that when the radio frequency signals of electronic equipment such as existing beauty equipment are output intermittently, the use experience is influenced by the radio frequency signals with phase differences.
According to an aspect of the present invention, there is provided a radio frequency signal generating circuit including:
the power supply, the transformer, the control unit, the switch unit and the phase adjusting unit;
the switch unit is connected with the control unit and is used for responding to the control signal of the control unit to be conducted;
the primary coil of the transformer is respectively connected with the switch unit and the power supply, and the primary coil of the transformer is used for outputting a radio frequency signal to the secondary coil of the transformer when the switch unit is conducted;
the phase adjusting unit is connected with the switch unit and used for adjusting the phase of the radio-frequency signal output by the transformer when the radio-frequency signal is output intermittently.
Optionally, the switch unit includes:
the first end of the first switch tube is connected with the first end of the primary coil of the transformer, the second end of the first switch tube is grounded, and the control end of the first switch tube is electrically connected with the control unit;
the second end of the primary coil of the transformer is connected with a power supply;
the first switch tube is used for switching on or off according to a control signal output by the control unit so as to control a radio-frequency signal output between the first end and the second end of the primary coil of the transformer.
Optionally, the phase adjusting unit includes:
the first end of the first adjusting component is connected with the control end of the first switch tube, the second end of the first adjusting component is connected with the second end of the first switch tube, and the first adjusting component is used for adjusting the phase of a radio-frequency signal output between the first end and the second end of a primary coil of the transformer.
Optionally, the switch unit further includes:
a first end of the second switching tube is connected with a third end of the primary coil of the transformer, a second end of the second switching tube is grounded, and a control end of the second switching tube is electrically connected with the control unit;
the second end of the primary coil of the transformer is connected with a power supply;
the second switch tube is used for switching on or switching off according to the control signal output by the control unit so as to control the radio-frequency signal output between the second end and the third end of the primary coil of the transformer.
Optionally, the phase adjusting unit further includes:
and the first end of the second regulating component is connected with the control end of the second switching tube, the second end of the second regulating component is connected with the second end of the second switching tube, and the second regulating component is used for regulating the phase of the radio-frequency signal output between the second end and the third end of the primary coil of the transformer.
Optionally, the radio frequency signal generating circuit further includes:
the first end of the waveform modulation unit is connected with the first end of the primary coil of the transformer, the second end of the waveform modulation unit is connected with the third end of the primary coil of the transformer, and the third end of the waveform modulation unit is connected with the second end of the primary coil of the transformer;
and the waveform modulation unit is used for adjusting the square wave signal input into the transformer into a half-wave sine wave signal.
Optionally, the waveform modulation unit includes:
the first capacitor, the second capacitor and the first inductor;
the first end of the first capacitor is connected with the first end of the primary coil of the transformer, the second end of the first capacitor is connected with the first end of the second capacitor and the first end of the first inductor, the second end of the second capacitor is connected with the third end of the primary coil of the transformer, and the second end of the first inductor is connected with the second end of the primary coil of the transformer.
Optionally, the radio frequency signal generating circuit further includes: an inverter is provided to convert the voltage of the power source into a voltage,
the inverter is connected between the control unit and the switch unit, the input end of the inverter is connected with the output end of the control unit, and the first output end of the inverter is connected with the control end of the first switch tube of the switch unit;
the second output end of the phase inverter is connected with the control end of the second switching tube of the switching unit, and the first output end of the phase inverter is opposite to the level of the control signal output by the second output end.
Optionally, the radio frequency signal generating circuit further includes:
the reverse connection preventing unit is connected with a secondary coil of the transformer;
and the filtering unit is connected with the secondary coil of the transformer.
According to another aspect of the present invention, there is provided an electronic apparatus comprising: the radio frequency signal generating circuit of any of the preceding aspects.
According to the technical scheme of the embodiment of the invention, the switch unit is arranged and is conducted in response to the control signal of the control unit, so that the primary coil of the transformer, the switch unit and the power supply form a loop respectively. The phase adjusting unit is connected with the switch unit. When the radio-frequency signal is intermittently output, the phase adjusting unit adjusts the phase of the radio-frequency signal output to the secondary coil of the transformer when the primary coil of the transformer is conducted by the switching unit. When the control signal output by the control unit acts on the control end of the switch unit, the switch unit can be rapidly conducted, so that the positive radio-frequency signal and the negative radio-frequency signal are synchronously output as much as possible, the radio-frequency signal output by the secondary coil of the transformer can reach a peak value in a short time, the duty ratio of the output peak voltage of the radio-frequency signal output by the radio-frequency signal generating circuit meets the requirement of a target user on the radio-frequency signal, and the use experience of electronic products such as beauty instruments and the like is improved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a radio frequency signal generating circuit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another RF signal generating circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a radio frequency signal generating circuit according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of an RF signal generating circuit according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an RF signal generating circuit according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a RF signal generating circuit according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of another radio frequency signal generating circuit according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a radio frequency signal generating circuit according to an embodiment of the present invention. Referring to fig. 1, a radio frequency signal generating circuit 200 according to an embodiment of the present invention includes a power supply 1, a transformer 2, a control unit 3, a switching unit 4, and a phase adjusting unit 5; the switch unit 4 is connected with the control unit 3, and the switch unit 4 is used for responding to the control signal of the control unit 3 and conducting; a primary coil of the transformer 2 is respectively connected with the switch unit 4 and the power supply 1, and the primary coil of the transformer 2 is used for outputting a radio frequency signal to a secondary coil of the transformer 2 when the switch unit 4 is conducted; the phase adjusting unit 5 is connected to the switching unit 4, and the phase adjusting unit 5 is configured to adjust a phase of the rf signal output by the transformer 2 when the rf signal is intermittently output.
Specifically, the control unit 3 may include a processor, a single chip, an FPGA (Field Programmable Gate Array), a DSP (Digital Signal Processing), and the like, and may be a controller capable of controlling Signal output, which is not limited herein. The control unit 3 generates a control signal in response to the operation instruction, the control signal being output to the switching unit 4. The operation instruction may be a control instruction issued by a superior controller, or an operation instruction triggered by a target user, which is not limited herein. The switching unit 4 is connected to the control unit 3, and the switching unit 4 switches on the power supply 1 and the primary winding of the transformer 2 in response to a control signal output from the control unit 3. The control signal may be a level signal, such as a PWM signal or the like. The control unit 3 controls the on-time of the switching unit 4, so that the primary coil of the transformer 2 generates and outputs an alternating current electrical signal. The secondary coil of the transformer 2 couples the alternating current electrical signal output by the primary coil, and outputs an alternating current radio frequency signal.
The phase adjusting unit 5 is connected with the switch unit 4, the phase adjusting unit 5 can stabilize the electric potential of the control end of the switch unit 4, when the control signal output by the control unit 3 acts on the control end of the switch unit 4, the switch unit 4 can be quickly conducted, the electric leakage of the switch unit is reduced, the phases of the positive radio-frequency signal and the negative radio-frequency signal output by the secondary coil of the transformer are consistent as much as possible, the radio-frequency signal output by the secondary coil of the transformer 2 can reach a peak value in a short time, and the delay time of the peak value of the output radio-frequency signal is shortened. When the radio frequency circuit intermittently outputs the radio frequency signal, the phase adjusting unit 5 adjusts the phase synchronization of the positive signal and the negative signal of the radio frequency signal output by the transformer 2, so that when the radio frequency signal is intermittently output, the secondary coil of the transformer 2 can quickly boost the voltage of the radio frequency signal to the voltage peak value ideally output by the radio frequency signal generating circuit. The arrangement enables the duty ratio of the output peak voltage of the radio frequency signal output by the radio frequency signal generating circuit to meet the requirement of a target user on the radio frequency signal, and improves the use experience of electronic products such as a beauty instrument and the like.
In the radio frequency signal generating circuit provided by this embodiment, by setting the switch unit 4, the switch unit 4 is turned on in response to the control signal of the control unit 3, so that the primary coil of the transformer 2 forms a loop with the switch unit 4 and the power supply 1, respectively. Connected with the switching unit 4 by providing a phase adjustment unit 5. When the radio frequency signal is intermittently output, the phase adjusting unit 5 adjusts the phase of the radio frequency signal output to the secondary coil of the transformer 2 when the primary coil of the transformer 2 is turned on by the switching unit 4. When the control signal output by the control unit 3 acts on the control end of the switch unit 4, the switch unit 4 can be rapidly switched on, so that the positive radio-frequency signal and the negative radio-frequency signal are synchronously output as much as possible, the radio-frequency signal output by the secondary coil of the transformer 2 can reach a peak value in a short time, the duty ratio of the output peak voltage of the radio-frequency signal output by the radio-frequency signal generating circuit meets the requirement of a target user on the radio-frequency signal, and the use experience of electronic products such as beauty instruments and the like is improved.
Optionally, fig. 2 is a schematic structural diagram of another radio frequency signal generating circuit provided in an embodiment of the present invention. On the basis of the above-described embodiment, referring to fig. 2, the present embodiment provides a switch unit 4 including: a first end of the first switch tube Q1 is connected with a first end 11 of a primary coil of the transformer 2, a second end of the first switch tube Q1 is grounded, and a control end of the first switch tube Q1 is electrically connected with the control unit 3; the second end 12 of the primary coil of the transformer 2 is connected with the power supply 1; the first switch tube Q1 is used for switching on or off according to a control signal output by the control unit 3 to control a radio frequency signal output between the first end 11 and the second end 12 of the primary coil of the transformer 2.
Specifically, when the first switch tube Q1 is turned on under the control of the control signal, the first switch tube Q1 turns on the power supply 1 and the first end 11 and the second end 12 of the primary coil of the transformer 2, and a loop is formed through the first end of the first switch tube Q1 and the second end of the first switch tube Q1, so that the secondary coil of the transformer 2 forms a sine signal of a positive half-wave and outputs the sine signal as a positive radio frequency signal.
Alternatively, on the basis of the above-described embodiment, with continued reference to fig. 2, the phase adjustment unit 5 includes: a first end of the first adjusting component 51 is connected to the control end of the first switching tube Q1, a second end of the first adjusting component 51 is connected to the second end of the first switching tube Q1, and the first adjusting component 51 is configured to adjust a phase of a radio frequency signal output between the first end 11 and the second end 12 of the primary winding of the transformer 2.
Specifically, the first adjusting component 51 connects the control terminal and the second terminal of the first switch tube Q1, so that the control signal applied to the control terminal of the first switch tube Q1 forms a loop with the first adjusting component 51 and the second terminal of the first switch tube Q1. The first adjusting part 51 may include a resistor, since the second terminal of the first switching tube Q1 is grounded. When the control terminal of the first switch tube Q1 inputs a control signal, the first adjusting component 51 can rapidly stabilize the potential of the control terminal of the first switch tube Q1, so that the potential of the control terminal of the first switch tube Q1 can be kept stable in a short time, the voltage difference between the source and the drain of the first switch tube Q1 can be greater than the threshold voltage of the first switch tube Q1, and the first switch tube Q1 can rapidly respond to the control signal and conduct the first terminal and the second terminal thereof.
Optionally, with reference to fig. 2, on the basis of the foregoing embodiment, the switch unit 4 provided in this embodiment further includes: a first end of the second switching tube Q2 is connected with a third end 13 of the primary coil of the transformer 2, a second end of the second switching tube Q2 is grounded, and a control end of the second switching tube Q2 is electrically connected with the control unit 3; the second end 12 of the primary coil of the transformer 2 is connected with the power supply 1; the second switching tube Q2 is used for switching on or off according to the control signal output by the control unit 3, so as to control the radio frequency signal output between the second end 12 and the third end 13 of the primary coil of the transformer 2.
Specifically, the second switch tube Q2 is turned on under the control of the control signal, the power supply 1 is turned on with the second end and the third end of the primary coil of the transformer 2, and a loop is formed through the first end and the second end of the second switch tube Q2, so that the secondary coil of the transformer 2 forms a sinusoidal signal of a negative half-wave, and the sinusoidal signal is output as a negative radio frequency signal.
Optionally, on the basis of the foregoing embodiment, with continuing reference to fig. 2, the phase adjusting unit 5 further includes: a second adjusting component 52, a first end of the second adjusting component 52 is connected to the control end of the second switching tube Q2, a second end of the second adjusting component 52 is connected to the second end of the second switching tube Q2, and the second adjusting component 52 is configured to adjust a phase of the radio frequency signal output between the second end 12 and the third end 13 of the primary winding of the transformer 2.
Specifically, the second adjusting component 52 connects the control terminal and the second terminal of the second switch tube Q2, so that the control signal acting on the control terminal of the second switch tube Q2 forms a loop with the second adjusting component 52 and the second terminal of the second switch tube Q2. The second adjusting part 52 may include a resistor since the second terminal of the second switching tube Q2 is grounded. When the control terminal of the second switch Q2 inputs the control signal, the second adjusting part 52 can rapidly stabilize the potential of the control terminal of the second switch Q2, so that the potential of the control terminal of the second switch Q2 can be kept stable in a short time, the voltage difference between the source and the drain of the second switch Q2 can be greater than the threshold voltage of the second switch Q2, and the second switch Q2 can rapidly respond to the control signal and turn on the first terminal and the second terminal thereof. The on-time of the first switch tube Q1 and the on-time of the second switch tube Q2 are synchronized by the arrangement, so that the phases of the sine signal of the positive half wave and the sine signal of the negative half wave output by the secondary coil of the transformer 2 are synchronized, the duty ratio of the output peak voltage of the radio frequency signal output by the radio frequency signal generating circuit meets the requirement of a target user on the radio frequency signal, and the use experience of electronic products such as beauty instruments is improved.
Optionally, fig. 3 is a schematic structural diagram of another radio frequency signal generating circuit provided in an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 3, the radio frequency signal generating circuit provided in this embodiment may further include: a first end of the waveform modulation unit 6 is connected with a first end of the primary coil of the transformer 2, a second end of the waveform modulation unit 6 is connected with a third end of the primary coil of the transformer 2, and a third end of the waveform modulation unit 6 is connected with a second end of the primary coil of the transformer 2; and a waveform modulation unit 6 for adjusting the square wave signal input to the transformer 2 into a half-wave sine wave signal.
Specifically, the transformer 2 provided in this embodiment may be manufactured by winding an electrode plate, a primary coil, and a secondary coil. The arrangement can reduce the volume occupied by the transformer 2 and further reduce the volume of the radio frequency signal generating circuit. By providing the waveform modulation unit 6, the transformation ratio of the primary coil and the secondary coil of the transformer 2 can be adjusted well. The waveform modulation unit 6 can adjust the electrical signal output by the primary coil of the transformer 2 and adjust the radio frequency signal output by the secondary coil of the transformer 2, so that the radio frequency signal output by the secondary coil of the transformer 2 is a sine wave signal.
Optionally, fig. 4 is a schematic structural diagram of another radio frequency signal generating circuit provided in the embodiment of the present invention. On the basis of the above embodiment, referring to fig. 4, the waveform modulation unit 6 provided in this embodiment may include: a first capacitor C1, a second capacitor C2 and a first inductor L1; the first end of the first capacitor C1 is connected with the first end of the primary coil of the transformer 2, the second end of the first capacitor C1 is connected with the first end of the second capacitor C2 and the first end of the first inductor L1, the second end of the second capacitor C2 is connected with the third end of the primary coil of the transformer 2, and the second end of the first inductor L1 is connected with the second end of the primary coil of the transformer 2.
Specifically, the first capacitor C1 and the first inductor L1 form an LC circuit. The first capacitor C1 plays an isolation role, and the first inductor L1 forms a loop with the power supply 1, between the first end and the second end of the primary coil of the transformer 2, and with the first switch tube Q1. The first inductor L1 is used to convert the square wave signal between the first end and the second end of the primary winding of the transformer 2 into a half-wave sinusoidal signal, for example, a positive half-wave sinusoidal signal. The second capacitor C2 and the first capacitor form an LC circuit, the second capacitor C2 plays an isolation role, the first inductor L1 forms a loop with the power source 1, the second end and the third end of the primary coil of the transformer 2, and the second switching tube Q2, and the first inductor L1 is used for converting the square wave signal between the second end and the third end of the primary coil of the transformer 2 into a half-wave sine signal, for example, a negative half-wave sine signal.
Optionally, fig. 5 is a schematic structural diagram of another radio frequency signal generating circuit provided in an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 5, the radio frequency signal generating circuit provided in this embodiment may further include: the inverter 7 is connected between the control unit 3 and the switch unit 4, the input end of the inverter 7 is connected with the output end of the control unit 3, and the first output end of the inverter 7 is connected with the control end of the first switch tube Q1 of the switch unit 4; a second output end of the inverter 7 is connected to the control end of the second switching tube Q2 of the switching unit 4, and a first output end of the inverter 7 and a second output end output control signals with opposite levels.
Specifically, the inverter 7 is connected to the control unit 3, and the control signal output by the control unit 3 is inverted by the inverter 7. The control signal input by the input end of the phase inverter 7 is directly output through the first output end, and is output through the second output end after being inverted by the phase inverter 7. The first output terminal of the inverter 7 has the opposite level of the control signal outputted from the second output terminal. The control signal can be a PWM signal, and the PWM signal output by the first output terminal has the same duty ratio and opposite level with the PWM signal output by the second output terminal.
The arrangement enables the first switch unit 4 and the second switch unit 4 to be conducted at intervals, so that the radio-frequency signal output by the transformer 2 is a full-wave sinusoidal signal, and no phase difference exists between a positive sinusoidal signal and a negative sinusoidal signal, so that when the intermittent radio-frequency signal is output, the peak-to-peak value of the radio-frequency signal can meet the requirements of a target user.
Optionally, fig. 6 is a schematic structural diagram of another radio frequency signal generating circuit according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 6, the radio frequency signal generating circuit provided in this embodiment further includes: an anti-reverse connection unit 8, wherein the anti-reverse connection unit 8 is connected with the secondary coil of the transformer 2; and the filtering unit 9, wherein the filtering unit 9 is connected with the secondary coil of the transformer 2.
Specifically, the reverse connection preventing unit 8 is used for preventing the circuit from being subjected to high-current impact. The reverse connection preventing unit 8 may include a diode. The filter unit 9 may comprise a filter capacitor, which functions as a pass-through isolation. The filtering unit 9 is used for filtering out direct current noise in the radio frequency signal output by the secondary coil of the transformer 2, and improving the quality of the radio frequency signal output by the radio frequency signal generating circuit.
Fig. 7 is a schematic structural diagram of another radio frequency signal generating circuit according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 7, an embodiment of the present invention provides an electronic device 100, including: the radio frequency signal generating circuit 200 provided in any of the above embodiments. The electronic device 100 provided by the embodiment of the present invention has the beneficial effects of the radio frequency signal generating circuit 200 provided by any of the above embodiments, and details are not repeated herein. The electronic device 100 proposed in the present embodiment includes a massage apparatus, a beauty apparatus, and the like.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A radio frequency signal generating circuit, comprising:
the power supply, the transformer, the control unit, the switch unit and the phase adjusting unit;
the switch unit is connected with the control unit and is used for responding to a control signal of the control unit to be conducted;
the primary coil of the transformer is respectively connected with the switch unit and the power supply, and is used for outputting a radio frequency signal to the secondary coil of the transformer when the switch unit is switched on;
the phase adjusting unit is connected with the switch unit and used for adjusting the phase of the radio frequency signal output by the transformer when the radio frequency signal is intermittently output.
2. The circuit according to claim 1, wherein the switching unit comprises:
a first end of the first switch tube is connected with a first end of a primary coil of the transformer, a second end of the first switch tube is grounded, and a control end of the first switch tube is electrically connected with the control unit;
the second end of the primary coil of the transformer is connected with a power supply;
the first switch tube is used for switching on or switching off according to a control signal output by the control unit so as to control a radio-frequency signal output between the first end and the second end of the primary coil of the transformer.
3. The circuit of claim 2, wherein the phase adjustment unit comprises:
a first end of the first adjusting component is connected to a control end of the first switching tube, a second end of the first adjusting component is connected to a second end of the first switching tube, and the first adjusting component is configured to adjust a phase of a radio frequency signal output between the first end and the second end of the primary winding of the transformer.
4. The circuit of claim 1, wherein the switching unit further comprises:
a first end of the second switching tube is connected with a third end of the primary coil of the transformer, a second end of the second switching tube is grounded, and a control end of the second switching tube is electrically connected with the control unit;
the second end of the primary coil of the transformer is connected with a power supply;
the second switch tube is used for being switched on or switched off according to the control signal output by the control unit so as to control the radio-frequency signal output between the second end and the third end of the primary coil of the transformer.
5. The circuit of claim 4, wherein the phase adjustment unit further comprises:
a first end of the second adjusting component is connected to the control end of the second switching tube, a second end of the second adjusting component is connected to a second end of the second switching tube, and the second adjusting component is configured to adjust a phase of a radio frequency signal output between the second end and the third end of the primary coil of the transformer.
6. The circuit of claim 1, wherein the radio frequency signal generation circuit further comprises:
a first end of the waveform modulation unit is connected with a first end of the primary coil of the transformer, a second end of the waveform modulation unit is connected with a third end of the primary coil of the transformer, and a third end of the waveform modulation unit is connected with a second end of the primary coil of the transformer;
and the waveform modulation unit is used for adjusting the square wave signal input into the transformer into a half-wave sine wave signal.
7. The circuit of claim 6, wherein the waveform modulation unit comprises:
the first capacitor, the second capacitor and the first inductor;
the first end of the first capacitor is connected with the first end of the primary coil of the transformer, the second end of the first capacitor is connected with the first end of the second capacitor and the first end of the first inductor, the second end of the second capacitor is connected with the third end of the primary coil of the transformer, and the second end of the first inductor is connected with the second end of the primary coil of the transformer.
8. The circuit of claim 1, further comprising: an inverter is provided to convert the voltage of the power source into a voltage,
the phase inverter is connected between the control unit and the switch unit, the input end of the phase inverter is connected with the output end of the control unit, and the first output end of the phase inverter is connected with the control end of the first switch tube of the switch unit;
and a second output end of the phase inverter is connected with a control end of a second switching tube of the switching unit, and the first output end of the phase inverter is opposite to the level of a control signal output by the second output end.
9. The circuit of claim 1, further comprising:
the reverse connection preventing unit is connected with a secondary coil of the transformer;
and the filtering unit is connected with the secondary coil of the transformer.
10. An electronic device, comprising: the radio frequency signal generating circuit of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211351522.7A CN115671557A (en) | 2022-10-31 | 2022-10-31 | Radio frequency signal generating circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211351522.7A CN115671557A (en) | 2022-10-31 | 2022-10-31 | Radio frequency signal generating circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115671557A true CN115671557A (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211351522.7A Pending CN115671557A (en) | 2022-10-31 | 2022-10-31 | Radio frequency signal generating circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115671557A (en) |
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2022
- 2022-10-31 CN CN202211351522.7A patent/CN115671557A/en active Pending
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