Three-dimensional synchronous phase microwave generation circuit, solid-state source module and microwave therapeutic apparatus

Abstract

The utility model discloses a three-dimensional synchronous phase microwave generating circuit, a solid-state source module and a microwave therapeutic apparatus, relates to the field of microwaves, and solves the problem that phases of microwave signals output by multiple channels are asynchronous. Signals are divided into six paths through a one-to-six power divider, three paths are supplied to a power amplification circuit, and the other paths are supplied to a power amplification circuit; and the other three paths of signals are supplied to a phase discriminator circuit, a phase discriminator compares phase differences of forward and reverse coupling signals, and a controller adjusts a phase shifter according to the information to realize phase synchronization of the three paths of signals. It is ensured that the three-dimensional in-phase microwaves output phase-synchronized microwave energy after being output by the radiator; the output phases of the three-dimensional phase synchronous microwave therapeutic instrument are synchronous, and microwave energy is superposed when the three-dimensional phase synchronous microwave therapeutic instrument reaches a therapeutic part, so that a better therapeutic effect can be achieved. And meanwhile, the energy of each path is one third of the synthesized energy, so that other parts cannot be damaged. And the condition that other parts are damaged during single-channel high-power treatment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of microwaves, and in particular to a three-dimensional synchronous phase microwave generation circuit, a solid-state source module, and a microwave therapy device. Background Technology

[0002] Microwave therapy devices are instruments that use microwave energy applied to the human body to achieve therapeutic purposes. Current multi-channel microwave therapy devices use magnetrons or solid-state microwave sources as internal power generating units. Each channel uses its own power source to generate microwave signals, which are then emitted through a radiator. However, microwave therapy devices typically have two output channels, each controlled separately. The microwaves output from the radiator cannot be in phase. Due to the different phases of the output energy, energy attenuation occurs when it reaches the treatment area, thus failing to achieve three-dimensional physiotherapy or therapeutic effects.

[0003] Therefore, how to solve the problem of phase asynchrony of multi-channel output microwave signals is a technical problem that urgently needs to be solved by people in this field. Utility Model Content

[0004] The purpose of this invention is to provide a three-dimensional synchronous phase microwave generation circuit, a solid-state source module, and a microwave therapy device.

[0005] To solve the above-mentioned technical problems, this utility model provides a three-dimensional synchronous phase microwave generation circuit, including: a microwave signal generation circuit; a 1-to-6 power divider, a three-channel power amplifier circuit, three couplers, three circulators, three phase detectors, three 1-to-2 power dividers, and a controller;

[0006] The output terminal of the microwave signal generation circuit is connected to the input terminal of the 1-to-6 power divider; the three output terminals of the 1-to-6 power divider are respectively connected to the input terminals of the three power amplifier circuits, and the output terminals of the three power amplifier circuits are respectively connected to the input terminals of the three couplers; the first output terminals of the three couplers are respectively connected to the input terminals of the three circulators; one output terminal of the three circulators is respectively connected to the input terminals of the three 1-to-2 power dividers; the first output terminals of the three 1-to-2 power dividers are respectively connected to the three phase detectors, and the other three output terminals of the 1-to-6 power divider are respectively connected to the input terminals of the three phase detectors; the output terminals of the power amplifier circuit, the three phase detectors, the second output terminals of the three 1-to-2 power dividers, and the second output terminals of the three couplers are connected to the controller.

[0007] As an optional solution, in the above-mentioned three-dimensional synchronous phase microwave generation circuit, the power amplifier circuit includes: a voltage-controlled attenuator, a phase shifter, and a power amplifier circuit;

[0008] The input terminal of the voltage-controlled attenuator is connected to the output terminal of the 1-to-6 power divider; the output terminal of the voltage-controlled attenuator is connected to the input terminal of the phase shifter; the output terminal of the phase shifter is connected to the input terminal of the power amplifier circuit; the output terminal of the power amplifier circuit is connected to the input terminal of the coupler; and the control terminal of the phase shifter is connected to the controller.

[0009] As an optional solution, in the above-mentioned three-dimensional synchronous phase microwave generation circuit, the microwave signal generation circuit includes: a crystal oscillator and a phase-locked loop;

[0010] The output terminal of the crystal oscillator is connected to the input terminal of the phase-locked loop, and the output terminal of the phase-locked loop is connected to the input terminal of the one-to-six power divider.

[0011] As an optional solution, in the above-mentioned three-dimensional synchronous phase microwave generation circuit, the microwave signal generation circuit further includes: a first power amplifier;

[0012] The crystal oscillator is connected to the phase-locked loop via the first power amplifier.

[0013] As an optional solution, in the above-mentioned three-dimensional synchronous phase microwave generation circuit, the microwave signal generation circuit further includes: a second power amplifier;

[0014] The phase-locked loop is connected to the one-to-six power divider via the second power amplifier.

[0015] As an alternative, in the above-mentioned three-dimensional synchronous phase microwave generation circuit, the control terminal of the voltage-controlled attenuator is connected to the controller.

[0016] As an optional solution, the above-mentioned three-dimensional synchronous phase microwave generation circuit further includes: the power amplifier circuit includes a third power amplifier and a fourth power amplifier;

[0017] The output terminal of the phase shifter is connected to the input terminal of the third power amplifier, the output terminal of the third power amplifier is connected to the input terminal of the fourth power amplifier, and the output terminal of the fourth power amplifier is connected to the input terminal of the coupler.

[0018] As an alternative, in the above-mentioned three-dimensional synchronous phase microwave generation circuit, the crystal oscillator is a 2450MHz crystal oscillator.

[0019] To solve the above-mentioned technical problems, this utility model also provides a solid-state source module, including the above-mentioned three-dimensional synchronous phase microwave generation circuit.

[0020] To solve the above-mentioned technical problems, this utility model also provides a microwave therapy device, including the above-mentioned solid-state source module; and also includes three radiators;

[0021] The outputs of the three circulators are respectively connected to the three radiators.

[0022] The three-dimensional synchronous phase microwave generation circuit provided by this utility model includes: a microwave signal generation circuit; a 1-to-6 power divider, a three-channel power amplifier circuit, three couplers, three circulators, three phase detectors, three 1-to-2 power dividers, and a controller; the output terminal of the microwave signal generation circuit is connected to the input terminal of the 1-to-6 power divider; the three output terminals of the 1-to-6 power divider are respectively connected to the input terminals of the three-channel power amplifier circuit, and the output terminals of the three-channel power amplifier circuit are respectively connected to the input terminals of the three couplers; the first output terminals of the three couplers are respectively connected to the input terminals of the three circulators; one output terminal of the three circulators is respectively connected to the input terminals of the three 1-to-2 power dividers; the first output terminals of the three 1-to-2 power dividers are respectively connected to the three phase detectors, and the other three output terminals of the 1-to-6 power divider are respectively connected to the input terminals of the three phase detectors; the output terminals of the power amplifier circuit, the three phase detectors, the second output terminals of the three 1-to-2 power dividers, and the second output terminals of the three couplers are connected to the controller. This invention uses a 1-to-6 power divider to split the signal into six paths. Three paths supply the power amplifier circuit, and the other three supply the phase detector circuit. The phase detector compares the phase difference between the forward and reverse coupled signals, and the controller adjusts the phase shifter based on this information to achieve phase synchronization of the three signals. This ensures that the three-dimensional in-phase microwave output after the radiator outputs synchronizes the microwave energy. The synchronized output phase of the three-dimensional phase-synchronized microwave therapy device results in superimposed microwave energy upon reaching the treatment site, achieving better therapeutic effects. Furthermore, since the energy from each path is only one-third of the total energy, it will not cause damage to other areas. This avoids the damage to other areas that can occur with single-channel high-power treatment.

[0023] In addition, this utility model also provides a solid-state source module and a microwave therapy device, which correspond to the above-mentioned three-dimensional synchronous phase microwave generation circuit and have the same effect. Attached Figure Description

[0024] To more clearly illustrate the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of a three-dimensional synchronous phase microwave generation circuit provided by this utility model;

[0026] Figure 2 This is a schematic diagram of a microwave therapy device provided by this utility model.

[0027] The reference numerals in the attached figures are as follows:

[0028] 11-Microwave signal generation circuit; 12-One-to-six power divider; 13-Power amplifier circuit; 14-Coupled; 15-Circulator; 16-Phase detector; 17-One-to-two power divider; 18-Controller. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The core of this invention is to provide a three-dimensional synchronous phase microwave generation circuit, a solid-state source module, and a microwave therapy device.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] To solve the above problems, this utility model provides a three-dimensional synchronous phase microwave generation circuit, such as... Figure 1 As shown, it includes: a microwave signal generation circuit 11; a 1-to-6 power divider 12; a three-way power amplifier circuit 13; three couplers 14; three circulators 15; three phase detectors 16; three 1-to-2 power dividers 17; and a controller 18.

[0033] The output of the microwave signal generation circuit 11 is connected to the input of the 1-to-6 power divider 12; the three outputs of the 1-to-6 power divider 12 are respectively connected to the inputs of the three-channel power amplifier circuit 13, and the outputs of the three-channel power amplifier circuit 13 are respectively connected to the inputs of the three couplers 14; the first outputs of the three couplers 14 are respectively connected to the inputs of the three circulators 15; one output of the three circulators 15 is respectively connected to the inputs of the three 1-to-2 power dividers 17; the first outputs of the three 1-to-2 power dividers 17 are respectively connected to the three phase detectors 16, and the other three outputs of the 1-to-6 power divider 12 are respectively connected to the inputs of the three phase detectors 16; the outputs of the power amplifier circuit 13, the three phase detectors 16, the second outputs of the three 1-to-2 power dividers 17, and the second outputs of the three couplers 14 are connected to the controller 18.

[0034] The microwave signal generation circuit 11 generates the initial microwave signal, which can be generated by a crystal oscillator. The specific circuit structure can be designed according to actual needs.

[0035] A power divider, also known as a power splitter, is a device that splits the energy of one input signal into two or more outputs of equal or unequal energy. The 1-to-6 power divider 12 mentioned in this embodiment refers to a power divider that splits a microwave signal into six paths. The 1-to-2 power divider 17 refers to a power divider that splits a microwave signal into two paths.

[0036] Three independent power amplifier circuits 13 are used to amplify microwave signals. Three of the microwave signals are distributed to three power amplifier circuits 13 by a 1-to-6 power divider 12. Each power amplifier circuit 13 is controlled by a controller 18, which independently adjusts the power and phase. Then, the phase-synchronized microwave energy is output through a coupler 14 and a circulator 15.

[0037] Coupler 14 is a device used to extract a portion of the microwave signal output from power amplifier circuit 13 as a monitoring signal. Specifically, it can be a directional coupler 14 used to extract the forward coupling signal and send it to controller 18.

[0038] Circulator 15 is used to isolate the input side and the subsequent load terminal, and provides a reflected signal. The provided reflected signal is distributed by the 1-to-2 power divider 17 to the phase detector 16 and the controller 18 for detection and phase adjustment to ensure phase synchronization of the three outputs.

[0039] The three phase detectors 16 compare the three microwave signals distributed by the 1-to-6 power divider 12 with the microwave signals distributed by the 1-to-2 power divider 17 to identify their phase differences, and then send the phase differences to the controller 18.

[0040] The controller 18 determines whether the three phase differences of the three phase detectors 16 are consistent to determine whether the microwave signals output by the circulator 15 are synchronized. If they are not synchronized, the controller 18 adjusts the phase by adjusting the power amplifier circuit 13 to synchronize the three output microwave signals.

[0041] In addition, the controller calculates the standing wave ratio (SWR) based on the forward coupling signal sent by the coupler 14 and the reflected signal sent by the 1-to-2 power divider 17. When the SWR is too high, the controller 18 can protect the circuit by controlling the power amplifier circuit 13 to shut down.

[0042] The three-dimensional synchronous phase microwave generation circuit provided in this application includes: a microwave signal generation circuit 11; a 1-to-6 power divider 12, a three-channel power amplifier circuit 13, three couplers 14, three circulators 15, three phase detectors 16, three 1-to-2 power dividers 17, and a controller 18; the output terminal of the microwave signal generation circuit 11 is connected to the input terminal of the 1-to-6 power divider 12; the three output terminals of the 1-to-6 power divider 12 are respectively connected to the input terminals of the three-channel power amplifier circuit 13, and the output terminals of the three-channel power amplifier circuit 13 are respectively connected to the input terminals of the three couplers 14. The input terminals are connected as follows: the first output terminals of the three couplers 14 are respectively connected to the input terminals of the three circulators 15; one output terminal of the three circulators 15 is respectively connected to the input terminals of the three 1-to-2 power dividers 17; the first output terminals of the three 1-to-2 power dividers 17 are respectively connected to the three phase detectors 16; the other three output terminals of the 1-to-6 power divider 12 are respectively connected to the input terminals of the three phase detectors 16; the output terminals of the power amplifier circuit 13, the three phase detectors 16, the second output terminals of the three 1-to-2 power dividers 17, and the second output terminals of the three couplers 14 are connected to the controller 18. This invention divides the signal into six paths using the 1-to-6 power divider 12, with three paths supplying the power amplifier circuit 13 and the other three paths supplying the phase detectors 16. The phase detectors 16 compare the phase differences between the forward and reverse coupled signals, and the controller 18 adjusts the phase shifters based on this information to achieve phase synchronization of the three signals. The system ensures that the three-dimensional phase-synchronized microwave output after passing through the radiator is synchronized with the microwave energy output. The synchronized output phase of the three-dimensional phase-synchronized microwave therapy instrument results in superimposed microwave energy upon reaching the treatment site, leading to better therapeutic effects. Furthermore, since the energy from each channel is only one-third of the total energy, it will not cause damage to other areas. This avoids the damage to other areas that can occur with high-power single-channel treatment.

[0043] According to the above embodiments, in one specific embodiment, the power amplifier circuit 13 of the above three-dimensional synchronous phase microwave generation circuit includes: a voltage-controlled attenuator, a phase shifter, and a power amplifier module.

[0044] The input terminal of the voltage-controlled attenuator is connected to the output terminal of the 1-to-6 power divider 12; the output terminal of the voltage-controlled attenuator is connected to the input terminal of the phase shifter; the output terminal of the phase shifter is connected to the input terminal of the power amplifier module; the output terminal of the power amplifier module is connected to the input terminal of the coupler 14; and the control terminal of the phase shifter is connected to the controller 18.

[0045] A voltage-controlled attenuator (VCO) is a device that adjusts its attenuation based on a control signal. Specifically, it can be a voltage-controlled resistor or circuit used to adjust the strength of a passing microwave signal. The input of the VCO is connected to the output of a 1-to-6 power divider 12. The signal distributed from the power divider first passes through the VCO for power adjustment. By adjusting the attenuation, the signal strength reaching subsequent circuits can be controlled to adapt to different power requirements. Specifically, the control terminal of the VCO is connected to a controller 18.

[0046] A phase shifter is a device that can change the phase of a signal; it can be an electronic or mechanical phase adjuster used to precisely adjust the phase of a microwave signal. The output of the voltage-controlled attenuator is connected to the input of the phase shifter, the output of the phase shifter is connected to the input of the power amplifier module, and the control terminal of the phase shifter is connected to the controller 18. The phase shifter adjusts the signal phase according to the instructions of the controller 18 to achieve phase synchronization with signals from other channels.

[0047] A power amplifier module can be a combination of a series of amplifiers that amplify signals according to actual needs, without any specific limitation on the amplification factor.

[0048] The signal originates from the microwave signal generation circuit 11, is distributed by a 1-to-6 power divider 12, and then enters a three-channel power amplifier circuit 13. In each channel, the signal's power is first adjusted by a voltage-controlled attenuator, then its phase is adjusted by a phase shifter, and finally amplified to the required power level by the power amplifier circuit 13 before being output through a coupler 14. Through the cooperation of the phase shifter and the controller 18, phase synchronization of the three signals can be achieved, which is crucial for the generation of three-dimensional synchronous microwave signals. The voltage-controlled attenuator allows for precise power control of each signal, which helps optimize system performance and efficiency. This application enables independent adjustment of each signal, providing high flexibility and adjustability.

[0049] According to the above embodiments, in one specific embodiment, the microwave signal generation circuit 11 includes: a crystal oscillator and a phase-locked loop;

[0050] The output terminal of the crystal oscillator is connected to the input terminal of the phase-locked loop, and the output terminal of the phase-locked loop is connected to the input terminal of the 1-to-6 power divider 12.

[0051] A crystal oscillator is an electronic device that uses the piezoelectric effect of a quartz crystal to generate stable frequency oscillations. In the microwave signal generation circuit 11, the crystal oscillator provides a stable reference frequency, which is fundamental for generating accurate microwave signals. A phase-locked loop (PLL) is an electronic circuit that locks the phase of an input signal and generates an output signal synchronized with the frequency and phase of the input signal.

[0052] Specifically, a 2450MHz crystal oscillator is used to generate a stable 2450MHz microwave signal. The crystal oscillator generates a reference signal for the phase-locked loop (PLL). This low-power signal is amplified by an amplifier to drive the PLL. The controller 18 configures the PLL to generate a stable RF signal, which is then amplified and provided to a power divider. The power divider splits the preceding signal into multiple phase-synchronized microwave signals for the subsequent circuitry.

[0053] The stable frequency signal generated by the crystal oscillator is directly provided to the phase-locked loop as a reference signal. The synchronization signal generated by the phase-locked loop is sent to the 1-to-6 power divider 12 and further distributed to the subsequent power amplifier circuit 13.

[0054] According to the above embodiments, in one specific embodiment, the microwave signal generation circuit 11 further includes: a first power amplifier;

[0055] The crystal oscillator is connected to the phase-locked loop via the first power amplifier.

[0056] According to the above embodiments, in one specific embodiment, the microwave signal generation circuit 11 further includes: a second power amplifier;

[0057] The phase-locked loop is connected to the 1-to-6 power divider 12 via the second power amplifier.

[0058] The first power amplifier is a device used to enhance the power of the crystal oscillator's output signal; it can be a low-noise amplifier (LNA) or other types of radio frequency power amplifiers. The first power amplifier receives the weak signal generated by the crystal oscillator and amplifies it to a power level sufficient to drive the phase-locked loop.

[0059] The second power amplifier is a device used to enhance the power of the phase-locked loop (PLL) output signal; specifically, it can be a high-power amplifier. The second power amplifier receives the synchronized signal from the PLL and amplifies it to a power level sufficient to drive the 1-to-6 power divider 12 and subsequent circuitry.

[0060] The use of these two power amplifiers ensures that the signal does not lose strength due to attenuation during transmission, while also guaranteeing the synchronization and stability of the signal.

[0061] According to the above embodiments, in one specific embodiment, the power amplification module further includes a third power amplifier and a fourth power amplifier;

[0062] The output of the phase shifter is connected to the input of the third power amplifier, the output of the third power amplifier is connected to the input of the fourth power amplifier, and the output of the fourth power amplifier is connected to the input of the coupler 14.

[0063] The third power amplifier is a device used to enhance the output signal power of the phase shifter, and can be specifically an intermediate stage power amplifier. The fourth power amplifier is a device used to further amplify the output signal of the third power amplifier, and can be specifically a final stage power amplifier.

[0064] The signal first undergoes phase adjustment via a phase shifter, then is amplified in multiple stages by the third and fourth power amplifiers before finally reaching coupler 14. This allows for finer control of the signal power level while reducing nonlinear distortion that may occur in individual amplifiers.

[0065] This application also provides a solid-state source module, including the above-described three-dimensional synchronous phase microwave generation circuit.

[0066] This application also provides a microwave therapy device, such as... Figure 2 As shown, it includes a solid-state source module; it also includes three radiators;

[0067] The outputs of the three circulators 15 are connected to the three radiators respectively.

[0068] A radiator is a device used to transmit microwave energy to a treatment area; it can be an antenna or a probe. The radiator transmits phase-synchronized microwave signals generated by a solid-state source module to the treatment site to achieve the therapeutic effect.

[0069] The output signal of each circulator 15 is directly connected to a radiator, ensuring that the microwave signals received by each radiator are phase-synchronized. The phase-synchronized microwave signals are generated by the solid-state source module, transmitted through the circulator 15 to each radiator, and then emitted by the radiators to the treatment site. The phase synchronization of the signals received by the three radiators improves the treatment effect, especially during three-dimensional treatment, enabling more precise control of energy distribution.

[0070] The foregoing has provided a detailed description of the three-dimensional synchronous phase microwave generation circuit, solid-state source module, and microwave therapy device provided by this utility model. The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0071] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

Claims

1. A three-dimensional synchronous phase microwave generation circuit, characterized by, The application relates to a three-dimensional synchronous phase microwave generating circuit. The microwave signal generating circuit (11) comprises a crystal oscillator and a phase-locked loop. The crystal oscillator is connected with the phase-locked loop through a first power amplifier.

2. The three-dimensional simultaneous phase microwave generation circuit according to claim 1, characterized by, The phase-locked loop is connected with the one-in-six power divider (12) through a second power amplifier. The control end of the voltage-controlled attenuator is connected with the controller (18).

3. The three-dimensional simultaneous phase microwave generation circuit according to claim 2, characterized in that, The power amplification module comprises a third power amplifier and a fourth power amplifier. The output end of the phase shifter is connected with the input end of the third power amplifier, the output end of the third power amplifier is connected with the input end of the fourth power amplifier, and the output end of the fourth power amplifier is connected with the input end of the coupler (14).

4. The three-dimensional simultaneous phase microwave generation circuit according to claim 3, characterized by, The crystal oscillator is a 2450MHz crystal oscillator. The application further relates to a solid-state source module comprising the three-dimensional synchronous phase microwave generating circuit.

5. The three-dimensional simultaneous phase microwave generation circuit of claim 3, wherein, The application further relates to a three-radiator antenna comprising the solid-state source module. ​ 6. The three-dimensional simultaneous phase microwave generation circuit of claim 2, wherein, ​ 7. The three-dimensional simultaneous phase microwave generation circuit of claim 2, wherein, ​ ​ 8. The three-dimensional simultaneous phase microwave generation circuit of claim 3, wherein, ​ 9. A solid state source module characterized by, ​ 10. A microwave therapy device, characterized in that, ​ The outputs of the three circulators (15) are respectively connected with the three radiators.

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