A dual-bandwidth load rectifier circuit based on adaptive signal current conduction

Abstract

This invention discloses a dual-band wide-load rectifier circuit based on adaptive signal current diversion. The invention incorporates high-load and low-load dual-band reactance compensation branches, which compensate for the capacitive impedance generated by the diodes within these branches. Under low loads, the low-load and high-load dual-band compensation branches work collaboratively. Under high loads, the high-load dual-band compensation branch maintains high efficiency, ensuring the overall high efficiency of the dual-band wide-load rectifier circuit. This dual-band wide-load rectification adaptively diverts the signal to the low-load and high-load dual-band compensation branches according to load changes, thus broadening the load range. It operates at dual frequencies without requiring additional control circuitry, resulting in a simpler circuit structure and reduced circuit size. This invention has wide applications in the field of electromagnetic energy recovery technology.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic energy recovery technology, and in particular to a dual-bandwidth load rectifier circuit based on adaptive signal current conduction. Background Technology

[0002] With the continuous development of communication technology in recent years, a massive number of IoT devices or wireless sensor nodes are used in smart homes, healthcare, environmental monitoring, autonomous driving, and other scenarios. How to power these devices has gradually become a hot research topic. Environmental electromagnetic energy recovery technology can continuously provide energy to devices without being limited by time, season, or space. However, the efficiency of converting electromagnetic energy into DC is closely related to the rectifier circuit, a key component. This is because the load value of the rectifier circuit affects the DC circuit, which in turn affects the bias state of the diodes. Since diodes are nonlinear devices, changes in load will cause changes in diode impedance, easily leading to input mismatch. In practical applications, the internal resistance of the devices connected to the rectifier circuit changes as the devices operate continuously. Therefore, the load value connected to the rectifier circuit is not the optimal load value selected in the circuit design, and the efficiency of the electromagnetic energy recovery system will rapidly decrease. Therefore, a rectifier circuit with a wide load range can adapt to more complex real-world scenarios. Furthermore, since electromagnetic energy in the environment is distributed across multiple frequency bands, based on the need to acquire and convert as much electromagnetic energy as possible, implementing a dual-frequency rectifier circuit design while broadening the load range is particularly important.

[0003] To address the issue of narrow load range, related technologies offer two approaches. The first is to introduce a DC-DC converter or additional control circuit between the rectifier circuit and the load. However, this increases circuit size and cost, reducing its practicality. Furthermore, it causes additional power loss, leading to decreased system efficiency, and may even render the rectifier circuit unusable in low-input-power scenarios. The second approach involves designing novel topologies such as coupler recovery networks, reflection power compensation networks, and impedance compression networks. These solutions broaden the load range to some extent, but suffer from issues such as large size, introduced additional losses, and the introduction of multiple loads. Additionally, there is a related technology based on a dual-band impedance compression network rectifier circuit and a frequency-selective rectifier antenna that does not require complex impedance matching, allowing operation in multiple frequency bands while broadening the load range; however, their load range still has room for improvement. Summary of the Invention

[0004] In view of the technical problems of large circuit size, high additional loss and narrow load adaptability of current electromagnetic energy recovery technology, the purpose of this invention is to provide a dual-bandwidth load rectifier circuit based on adaptive signal current conduction.

[0005] This invention includes a dual-bandwidth load rectifier circuit based on adaptive signal current conduction, comprising:

[0006] An input matching network; the input end of the input matching network is used to receive radio frequency signals and perform impedance matching on the radio frequency signals, and the output end of the input matching network is used to connect to a high-load dual-frequency reactance compensation branch and a low-load dual-frequency reactance compensation branch;

[0007] High-load dual-frequency reactor compensation branch;

[0008] A low-load dual-frequency reactance compensation branch; the high-load dual-frequency reactance compensation branch and the low-load dual-frequency reactance compensation branch are connected in parallel to the output of the input matching network; wherein, the high-load dual-frequency reactance compensation branch has a first reactance compensation value, the low-load dual-frequency reactance compensation branch has a second reactance compensation value, and the first reactance compensation value is greater than the second reactance compensation value.

[0009] Furthermore, the high-load dual-frequency reactance compensation branch includes a first diode and a first grounding coupling line;

[0010] The cathode of the first diode is connected to the output terminal of the input matching network;

[0011] The positive terminal of the first diode is connected to one end of the first grounding coupling line, and the other end of the first grounding coupling line is grounded.

[0012] Furthermore, the low-load dual-frequency reactance compensation branch includes a second diode and a second grounding coupling line;

[0013] The cathode of the second diode is connected to the output terminal of the input matching network;

[0014] The positive terminal of the second diode is connected to one end of the second grounding coupling line, and the other end of the second grounding coupling line is grounded.

[0015] Furthermore, the first diode and the second diode are Schottky diodes of the same type.

[0016] Furthermore, the dual-bandwidth load rectifier circuit based on adaptive signal current conduction also includes:

[0017] Harmonic suppression network; the input terminal of the harmonic suppression network is connected to the output terminal of the input matching network, and the output terminal of the harmonic suppression network is used for load connection.

[0018] Furthermore, the harmonic suppression network includes:

[0019] First open-circuit branch; one end of the first open-circuit branch is connected to the output of the input matching network, the other end of the first open-circuit branch is open-circuited, and the length of the first open-circuit branch is equal to one-quarter wavelength of the radio frequency signal with the first frequency;

[0020] The second open-circuit branch; one end of the second open-circuit branch is connected to the output of the input matching network, the other end of the second open-circuit branch is open-circuited, and the length of the second open-circuit branch is equal to one-quarter wavelength of the second harmonic of the radio frequency signal with the first frequency;

[0021] The third open-circuit stub; one end of the third open-circuit stub is connected to the output of the input matching network, the other end of the third open-circuit stub is open-circuited, and the length of the third open-circuit stub is equal to one-quarter wavelength of the radio frequency signal with the second frequency;

[0022] The fourth open-circuit stub; one end of the fourth open-circuit stub is connected to the output of the input matching network, the other end of the fourth open-circuit stub is open-circuited, and the length of the fourth open-circuit stub is equal to one-quarter wavelength of the radio frequency signal with the second harmonic of the second frequency.

[0023] Furthermore, the dual-bandwidth load rectifier circuit based on adaptive signal current conduction also includes:

[0024] Radio frequency (RF) source; the output terminal of the RF source is connected to the input terminal of the input matching network, and the RF source is used to output the RF signal.

[0025] Furthermore, the dual-bandwidth load rectifier circuit based on adaptive signal current conduction also includes:

[0026] A DC blocking capacitor; one end of the DC blocking capacitor is connected to the output terminal of the RF source, and the other end of the DC blocking capacitor is connected to the input terminal of the input matching network.

[0027] Furthermore, the dual-bandwidth load rectifier circuit based on adaptive signal current conduction also includes:

[0028] The dielectric substrate; the input matching network, the high-load dual-frequency reactance compensation branch and the low-load dual-frequency reactance compensation branch are all fixed on the dielectric substrate by printed circuit technology.

[0029] Furthermore, the dielectric substrate is made of Rogers R4003C, the thickness of the dielectric substrate is 0.813 mm, and the dielectric constant of the dielectric substrate is 3.38.

[0030] The beneficial effects of this invention are as follows: In the dual-band wide-load rectifier circuit based on adaptive signal current guidance in the embodiments, the high-load dual-band reactance compensation branch and the low-load dual-band reactance compensation branch can compensate for the capacitive impedance generated by the diodes in the high-load dual-band reactance compensation branch and the low-load dual-band reactance compensation branch themselves; when the load connected to the harmonic suppression network is low-load, the low-load dual-band compensation branch and the high-load dual-band compensation branch can work together; when the load connected to the harmonic suppression network is high-load, because the high-load dual-band compensation branch introduces a larger reactance compensation value, the high-load dual-band compensation branch can still maintain high operating efficiency, so that the dual-band wide-load rectifier circuit as a whole can maintain high operating efficiency. The dual-band wide-load rectification can adaptively guide the signal to the low-load dual-band compensation branch and the high-load dual-band compensation branch according to the change of load value, thereby widening the load range and operating at dual frequencies, without the need for additional control circuits, the circuit structure is relatively simple, which is beneficial to reducing the circuit size. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the circuit principle structure of the dual-bandwidth load rectifier circuit based on adaptive signal current guidance in the embodiment.

[0032] Figure 2 This is a schematic diagram of the circuit structure of the dual-bandwidth load rectifier circuit based on adaptive signal current guiding in the embodiment.

[0033] Figure 3 The figures shown are simulation and measured results of the frequency response of the dual-bandwidth load rectifier circuit under different load values ​​when the input power is -5 and 5dBm, respectively, in the embodiment.

[0034] Figure 4 The figure shows the simulation and measured results of the efficiency of the dual-bandwidth load rectifier circuit in the embodiment, when the input power is -5 and 5dBm respectively, as a function of input power.

[0035] Figure 5 The figure shows the simulation and measured results of the efficiency of the dual-band wide-load rectifier circuit under different input power values ​​when the input frequency is 2.49GHz.

[0036] Figure 6 The figure shows the simulation and measured results of the efficiency of the dual-band wide-load rectifier circuit under different input power values ​​when the input frequency is 5.14GHz.

[0037] Figure 7 The figure shows the measured results of the efficiency of the dual-bandwidth load rectifier circuit at different frequencies when the input power is 5dBm, as described in the example. Detailed Implementation

[0038] In this embodiment, the circuit principle structure of the dual-bandwidth load rectifier circuit based on adaptive signal current guidance is as follows: Figure 1 As shown. (Refer to...) Figure 1 The dual-bandwidth load rectifier circuit based on adaptive signal current conduction includes an input matching network, a high-load dual-frequency reactance compensation branch, a low-load dual-frequency reactance compensation branch, an RF source, and a DC blocking capacitor. Through the input matching network, the high-load dual-frequency reactance compensation branch, and the low-load dual-frequency reactance compensation branch, the dual-bandwidth load rectifier circuit based on adaptive signal current conduction can achieve its basic functions.

[0039] In this embodiment, the components of the adaptive signal current-guided dual-band load rectifier circuit can be fabricated on a dielectric substrate using printed circuit board (PCB) technology. Rogers R4003C material with a thickness of 0.813 mm and a dielectric constant of 3.38 can be used as the dielectric substrate. On one side of the dielectric substrate, components such as the input matching network, high-load dual-band reactance compensation branch, low-load dual-band reactance compensation branch, RF source, and DC blocking capacitor are fabricated. On the other side of the dielectric substrate, a ground plane is fabricated as the ground wire for the adaptive signal current-guided dual-band load rectifier circuit. Each component can be connected to the ground plane on the other side of the dielectric substrate through metallized vias penetrating the substrate, thereby achieving grounding of each component in the adaptive signal current-guided dual-band load rectifier circuit.

[0040] In this embodiment, a circuit entity structure of a dual-bandwidth load rectifier circuit based on adaptive signal current conduction is as follows: Figure 2 As shown. Figure 2 The diagram shown is a layout viewed from one side of the dielectric substrate where the components have been fabricated, along with parameters such as linewidth. Figure 2 The position of each component and Figure 1 The corresponding characters are the same.

[0041] In this embodiment, the radio frequency source can output a radio frequency signal with a first frequency or a second frequency. Specifically, the first frequency is 2.49 GHz and the second frequency is 5.14 GHz.

[0042] Reference Figure 1 The output terminal of the RF source is connected to the input terminal of the input matching network 103, allowing the RF signal output by the RF source to enter the input matching network 103. A DC blocking capacitor can be placed between the output terminal of the RF source and the input terminal of the input matching network to isolate the DC signal output by the RF source.

[0043] In this embodiment, the input matching network serves as an impedance matching network.

[0044] In this embodiment, refer to Figure 1The high-load dual-frequency reactor compensation branch 101 and the low-load dual-frequency reactor compensation branch 102 are connected in parallel to the output of the input matching network 103.

[0045] In this embodiment, refer to Figure 1 The high-load dual-frequency reactance compensation branch 101 includes a first diode 2 and a first ground coupling line 1. The cathode of the first diode 2 is connected to the output terminal of the input matching network 103, and the anode of the first diode 2 is connected to one end of the first ground coupling line 1, with the other end grounded. The odd-mode impedance and electrical length of the first ground coupling line 1 directly affect the operating frequency of the high-load dual-frequency reactance compensation branch 101 and the magnitude of the compensated capacitive impedance.

[0046] In this embodiment, refer to Figure 1 The low-load dual-frequency reactance compensation branch 102 includes a second diode 4 and a second grounding coupling line 3. The cathode of the second diode 4 is connected to the output terminal of the input matching network 103, and the anode of the second diode 4 is connected to one end of the second grounding coupling line 3, with the other end grounded. The odd-even mode impedance and electrical length of the second grounding coupling line 3 directly affect the operating frequency of the low-load dual-frequency reactance compensation branch 102 and the magnitude of the compensated capacitive impedance.

[0047] In this embodiment, both the first diode and the second diode are Schottky diodes, and both are model BAT15-03w.

[0048] In this embodiment, both the first grounding coupling line 1 and the second grounding coupling line 3 are grounding coupling lines, which have a higher degree of freedom compared to traditional short-circuit stubs. Therefore, for a given first frequency (2.49GHz) and second frequency (5.14GHz), the magnitude of the corresponding compensated capacitive impedance value can be controlled by adjusting the odd-even mode impedance and electrical length of the first grounding coupling line 1 and the second grounding coupling line 3.

[0049] In this embodiment, the dual-band wide-load rectifier circuit based on adaptive signal current conduction will be used for the first frequency (2.49GHz) and the second frequency (5.14GHz). Therefore, the first ground coupling line 1 can be made into a compensation network with a first reactance compensation value, and the second ground coupling line 3 can be made into a compensation network with a second reactance compensation value. At the first frequency (2.49GHz) and the second frequency (5.14GHz), the first reactance compensation value is greater than the second reactance compensation value. That is, the high-load dual-frequency reactance compensation branch 101 can introduce a larger reactance compensation value, and the low-load dual-frequency reactance compensation branch 102 can introduce a smaller reactance compensation value.

[0050] In this embodiment, the working principle of the dual-band wide-load rectifier circuit is as follows: the high-load dual-band reactance compensation branch 101 and the low-load dual-band reactance compensation branch 102 can compensate for the capacitive impedance generated by the diodes in the high-load dual-band reactance compensation branch 101 and the low-load dual-band reactance compensation branch 102; when the load connected to the harmonic suppression network 104 is a low load (e.g., a pure resistor with a small resistance value), that is, the working state is a low-load state, the low-load dual-band compensation branch 102 and the high-load dual-band compensation branch 101 can work together; when the load connected to the harmonic suppression network 104 is a high load (e.g., a pure resistor with a large resistance value), that is, the working state is a high-load state, since the high-load dual-band compensation branch 101 introduces a large reactance compensation value, the high-load dual-band compensation branch 101 can still maintain a high working efficiency, so that the dual-band wide-load rectifier circuit as a whole can maintain a high working efficiency. The high-load dual-frequency reactance compensation branch 101 and the low-load dual-frequency reactance compensation branch 102 are connected in parallel. Therefore, the dual-frequency wide-load rectification can adaptively guide the signal to the high-load dual-frequency compensation branch 101 and the low-load dual-frequency compensation branch 102 according to the change of load value, thereby widening the load range. No additional control circuit is required, the circuit structure is relatively simple, and it is beneficial to reduce the circuit size.

[0051] In this embodiment, the dual-bandwidth load rectifier circuit based on adaptive signal current conduction further includes a harmonic suppression network 104. (Refer to...) Figure 1 The input terminal of the harmonic suppression network 104 is connected to the output terminal of the input matching network 103, and the output terminal of the harmonic suppression network 104 is used to connect the load 105.

[0052] Reference Figure 1 The harmonic suppression network 104 includes a first open-circuit branch 5, a second open-circuit branch 6, a third open-circuit branch 7, and a fourth open-circuit branch 8. One end of the first open-circuit branch 5 is connected to the output of the input matching network, and the other end of the first open-circuit branch 5 is open-circuited. One end of the second open-circuit branch 6 is connected to the output of the input matching network, and the other end of the second open-circuit branch 6 is open-circuited. One end of the third open-circuit branch 7 is connected to the output of the input matching network, and the other end of the third open-circuit branch 7 is open-circuited. One end of the fourth open-circuit branch 8 is connected to the output of the input matching network, and the other end of the fourth open-circuit branch 8 is open-circuited.

[0053] In this embodiment, the length of the first open-circuit branch 5 is equal to one-quarter wavelength of the radio frequency signal with a first frequency (2.49 GHz). The length of the second open-circuit branch 6 is equal to one-quarter wavelength of the second harmonic of the radio frequency signal with the first frequency (2.49 GHz). The length of the third open-circuit branch 7 is equal to one-quarter wavelength of the radio frequency signal with a second frequency (5.14 GHz). The length of the fourth open-circuit branch 8 is equal to one-quarter wavelength of the radio frequency signal with the second harmonic of the second frequency (5.14 GHz). Therefore, by setting the first open-circuit branch 5, the second open-circuit branch 6, the third open-circuit branch 7, and the fourth open-circuit branch 8, the harmonic suppression network 104 can suppress harmonics in the signal output from the input matching network 103.

[0054] In this embodiment, the dual-bandwidth load rectifier circuit based on adaptive signal current conduction can be fabricated through the following steps:

[0055] Step S1: Select a suitable diode based on the application of the circuit and the required frequency and power range;

[0056] Step S2: Design different dual-frequency reactance compensation branches and harmonic suppression networks according to the expected load range and operating frequency;

[0057] Step S3: Connect the dual-frequency reactance compensation branches, input matching network, harmonic suppression network and load operating at different load values, wherein each dual-frequency reactance compensation branch is connected in parallel;

[0058] Step S4: Fine-tune some parameters of the circuit to achieve better impedance matching and efficiency.

[0059] The return loss curves of a dual-band wide-load rectifier circuit based on dual-frequency reactance compensation, when the input power is -5 dBm and 5 dBm respectively, are shown as follows: Figure 3 As shown. By Figure 3 It can be seen that when the input power is -5 and 5dBm respectively, the circuit achieves good matching near 2.49GHz and 5.14GHz under different load values. The return loss is less than -10dB at 2.49GHz and less than -7dB at 2.49GHz, achieving impedance matching over a wide load range at the two operating frequencies.

[0060] Figure 4The graph shows the simulation and measured results of the circuit's efficiency as a function of input power at different load values ​​when the input power is -5 and 5dBm. As can be seen from the graph, at low input power, the rectification efficiency increases with increasing load, which is due to the reduced proportion of diode losses in the DC circuit. At high input power, the rectifier efficiency decreases with increasing load, due to the limitation of diode breakdown voltage; the diode is more likely to enter saturation under high load, and the efficiency drops rapidly.

[0061] Figure 5 This graph shows the simulation and measured results of the circuit's efficiency as a function of load value under different input power levels when the input frequency is 2.49GHz. When the input power is 10dBm, the actual measured rectification efficiency reaches a maximum of 65.38% at a load value of 0.5kΩ. When the input power is 5dBm, the rectification efficiency is greater than 50% from 0.21 to 5.4kΩ (load range ratio 25.7). There is a certain deviation between the actual test results and the simulation, mainly due to the inaccuracy of the circuit fabrication precision and the diode simulation model.

[0062] Figure 6 The figures show the simulation and measured results of the circuit's efficiency as a function of load value under different input power levels when the input frequency is 5.14 GHz. When the input power is 10 dBm, the actual measured rectification efficiency reaches a maximum of 60.39% at a load value of 0.2 kΩ. When the input power is 5 dBm, the rectification efficiency is greater than 40% from 0.07 to 4.2 kΩ (load range ratio 60). These results demonstrate the accuracy and feasibility of the design theory of this invention.

[0063] Figure 7 This graph shows the measured efficiency of the circuit at different frequencies as a function of load when the input power is 5dBm. With a load of 0.21kΩ and an input signal power of 5dBm, rectification efficiencies of 54.21% and 48.92% were achieved at 2.4 GHz and 5.1 GHz, respectively. Furthermore, the circuit exhibits excellent dual-frequency characteristics, maintaining high efficiency within the expected frequency band regardless of changes in load range.

[0064] In summary, this invention proposes a dual-frequency wide-load rectifier circuit based on dual-frequency reactance compensation. By designing dual-frequency reactance compensation branches for high and low loads and connecting them in parallel, this circuit achieves efficient rectification with a wide load range in both frequency bands.

[0065] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this disclosure are only relative to the relative positional relationships of the various components of this disclosure in the accompanying drawings. The singular forms "a," "described," and "the" used in this disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. Moreover, unless otherwise defined, all technical and scientific terms used in this embodiment have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this embodiment specification is only for describing particular embodiments and is not intended to limit the invention. The term "and / or" as used in this embodiment includes any combination of one or more of the associated listed items.

[0066] It should be understood that although the terms first, second, third, etc., may be used to describe various elements in this disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, a first element may also be referred to as a second element without departing from the scope of this disclosure, and similarly, a second element may also be referred to as a first element. The use of any and all instances or exemplary language (“e.g.,” “such as,” etc.) provided in this embodiment is intended only to better illustrate embodiments of the invention and, unless otherwise required, does not impose a limitation on the scope of the invention.

[0067] It should be recognized that embodiments of the present invention can be implemented or carried out by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable storage medium. The method can be implemented using standard programming techniques—including a non-transitory computer-readable storage medium configured with a computer program, wherein such a storage medium causes the computer to operate in a specific and predefined manner—according to the methods and drawings described in the specific embodiments. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system. However, if desired, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. Furthermore, for this purpose, the program can run on a programmed application-specific integrated circuit (ASIC).

[0068] Furthermore, the procedures described in this embodiment can be performed in any suitable order unless otherwise indicated by this embodiment or clearly contradicted by the context. The procedures (or variations and / or combinations thereof) described in this embodiment can be executed under the control of one or more computer systems configured with executable instructions, and can be implemented by hardware or a combination thereof as code (e.g., executable instructions, one or more computer programs, or one or more applications) that commonly executes on one or more processors. The computer program includes a plurality of instructions executable by one or more processors.

[0069] Furthermore, the method can be implemented in any suitable type of computing platform, including but not limited to personal computers, minicomputers, mainframes, workstations, networked or distributed computing environments, standalone or integrated computer platforms, or in communication with charged particle tools or other imaging devices. Aspects of the invention can be implemented as machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and / or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the processes described herein. Furthermore, the machine-readable code, or portions thereof, can be transmitted via wired or wireless networks. The invention described in this embodiment includes these and other different types of non-transitory computer-readable storage media when such media comprises instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor. When programmed according to the methods and techniques described in the invention, the invention also includes the computer itself.

[0070] A computer program can be applied to input data to perform the functions described in this embodiment, thereby transforming the input data to generate output data stored in non-volatile memory. The output information can also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects generated on the display.

[0071] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the above-described embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention, as long as they achieve the technical effects of the present invention by the same means, should be included within the scope of protection of the present invention. Within the scope of protection of the present invention, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A dual-bandwidth load rectifier circuit based on adaptive signal current conduction, characterized in that, The dual-bandwidth load rectifier circuit based on adaptive signal current conduction includes: An input matching network; the input end of the input matching network is used to receive radio frequency signals and perform impedance matching on the radio frequency signals, and the output end of the input matching network is used to connect to a high-load dual-frequency reactance compensation branch and a low-load dual-frequency reactance compensation branch; High-load dual-frequency reactor compensation branch; A low-load dual-frequency reactance compensation branch; the operating frequencies of the high-load dual-frequency reactance compensation branch and the low-load dual-frequency reactance compensation branch include a first frequency and a second frequency; the high-load dual-frequency reactance compensation branch and the low-load dual-frequency reactance compensation branch are connected in parallel to the output terminal of the input matching network; wherein, the high-load dual-frequency reactance compensation branch has a first reactance compensation value, and the low-load dual-frequency reactance compensation branch has a second reactance compensation value, and at both the first frequency and the second frequency, the first reactance compensation value is greater than the second reactance compensation value.

2. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to claim 1, characterized in that, The high-load dual-frequency reactor compensation branch includes a first diode and a first grounding coupling line; The cathode of the first diode is connected to the output terminal of the input matching network; The positive terminal of the first diode is connected to one end of the first grounding coupling line, and the other end of the first grounding coupling line is grounded.

3. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to claim 2, characterized in that, The low-load dual-frequency reactor compensation branch includes a second diode and a second grounding coupling line; The cathode of the second diode is connected to the output terminal of the input matching network; The positive terminal of the second diode is connected to one end of the second grounding coupling line, and the other end of the second grounding coupling line is grounded.

4. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to claim 3, characterized in that, The first diode and the second diode are Schottky diodes of the same type.

5. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to claim 1, characterized in that, The dual-bandwidth load rectifier circuit based on adaptive signal current conduction also includes: Harmonic suppression network; the input terminal of the harmonic suppression network is connected to the output terminal of the input matching network, and the output terminal of the harmonic suppression network is used for load connection.

6. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to claim 5, characterized in that, The harmonic suppression network includes: First open-circuit branch; one end of the first open-circuit branch is connected to the output of the input matching network, the other end of the first open-circuit branch is open-circuited, and the length of the first open-circuit branch is equal to one-quarter wavelength of the radio frequency signal with the first frequency; The second open-circuit branch; one end of the second open-circuit branch is connected to the output of the input matching network, the other end of the second open-circuit branch is open-circuited, and the length of the second open-circuit branch is equal to one-quarter wavelength of the second harmonic of the radio frequency signal with the first frequency; The third open-circuit stub; one end of the third open-circuit stub is connected to the output of the input matching network, the other end of the third open-circuit stub is open-circuited, and the length of the third open-circuit stub is equal to one-quarter wavelength of the radio frequency signal with the second frequency; The fourth open-circuit stub; one end of the fourth open-circuit stub is connected to the output of the input matching network, the other end of the fourth open-circuit stub is open-circuited, and the length of the fourth open-circuit stub is equal to one-quarter wavelength of the radio frequency signal with the second harmonic of the second frequency.

7. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to claim 1, characterized in that, The dual-bandwidth load rectifier circuit based on adaptive signal current conduction also includes: Radio frequency (RF) source; the output terminal of the RF source is connected to the input terminal of the input matching network, and the RF source is used to output the RF signal.

8. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to claim 1, characterized in that, The dual-bandwidth load rectifier circuit based on adaptive signal current conduction also includes: A DC blocking capacitor; one end of the DC blocking capacitor is connected to the output terminal of the RF source, and the other end of the DC blocking capacitor is connected to the input terminal of the input matching network.

9. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to any one of claims 1-8, characterized in that, The dual-bandwidth load rectifier circuit based on adaptive signal current conduction also includes: The dielectric substrate; the input matching network, the high-load dual-frequency reactance compensation branch and the low-load dual-frequency reactance compensation branch are all fixed on the dielectric substrate by printed circuit technology.

10. The dual-bandwidth load rectifier circuit based on adaptive signal current conduction according to claim 9, characterized in that, The dielectric substrate is made of Rogers R4003C, has a thickness of 0.813 mm, and a dielectric constant of 3.38.

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