Tunable circuit resonator based on nonlinear higher-order topological insulator

Abstract

The application provides a tunable circuit resonator based on a nonlinear high-order topological insulator, comprising: a coupling inductance L1, a coupling inductance L2, a coupling capacitance C1, a coupling capacitance C2, a first subunit and a second subunit; a plurality of coupling inductances L1, coupling inductances L2, coupling capacitances C1, coupling capacitances C2, first subunits and second subunits are periodically arranged to form a tunable circuit resonator; the capacitance value of the coupling capacitance C1 is smaller than the capacitance value of the coupling capacitance C2, and the inductance value of the coupling inductance L1 is greater than the inductance value of the coupling inductance L2. The structure of the tunable circuit resonator is constructed based on a four-pole moment topological insulator model, the tunability of the circuit resonator is realized, and the changing working conditions are adapted; the robustness of the tunable circuit resonator is improved by using the robustness of the model topological angle state, and the circuit element error has a certain tolerance; the manufacturing cost of the tunable circuit resonator is further reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic circuits, and in particular to a tunable circuit resonator based on a nonlinear high-order topological insulator. BACKGROUND

[0002] In modern electronic devices, circuit resonators are one of the key components, and their performance directly affects the stability and reliability of the entire system. Traditional circuit resonators rely on precise component matching to achieve a specific resonant frequency, but due to material defects and environmental factors causing parameter fluctuations, these resonators have poor robustness, leading to unstable performance in practical applications. With the development of electronic technology, there is an increasing demand for higher robustness and wider application range of circuit resonators, so it is crucial to find a new method to overcome the above problems.

[0003] To solve the problem of insufficient robustness of traditional circuit resonators, researchers have proposed a new type of resonator based on topological insulators. Topological insulators are a special material that exhibits an insulating state inside, while the surface or edge has good conductivity. The unique physical properties of this material give it natural immunity to material defects and impurities, greatly improving the robustness of circuit resonators. By applying the concept of topological insulators to circuit design, resonators with topological protection characteristics can be constructed, which can maintain stable resonant frequencies even in the presence of minor manufacturing deviations, greatly expanding the application potential of circuit resonators in theory.

[0004] Although circuit resonators based on topological insulators have shown significant advantages in improving robustness, they still have obvious limitations. The primary problem is that these resonators can only achieve a single fixed resonant frequency, lacking an effective tuning mechanism, which greatly limits their flexibility in different application scenarios. In addition, to obtain a high-robustness and high-precision circuit resonator, using high-quality circuit components is another common strategy, but this not only increases the cost of the circuit, but also may face the problem of not being able to meet the high-precision demand of components on the market. Therefore, how to develop a circuit resonator that can maintain high robustness and tunability has become an important direction of current research. SUMMARY

[0005] To solve the above problems existing in the prior art, the present application provides a tunable circuit resonator based on a nonlinear high-order topological insulator.

[0006] The technical problem to be solved by the present application is solved by the following technical scheme:

[0007] In a first aspect, the present application provides a tunable circuit resonator based on a nonlinear high-order topological insulator, comprising: a coupling inductor L1, a coupling inductor L2, a coupling capacitor C1, a coupling capacitor C2, a first subunit and a second subunit;

[0008] The plurality of coupling inductors L1, coupling inductors L2, coupling capacitors C1, coupling capacitors C2, first subunits and second subunits are arranged periodically to form the tunable circuit resonator.

[0009] The capacitance of the coupling capacitor C1 is smaller than that of the coupling capacitor C2, the inductance of the coupling inductor L1 is greater than that of the coupling inductor L2, and the structural arrangement of the tunable circuit resonator is based on a quadrupole topological insulator model in condensed matter physics.

[0010] Optionally, the structural arrangement of the tunable circuit resonator is:

[0011] The plurality of first subunits and the plurality of second subunits are arranged alternately to form a row unit of the tunable circuit resonator; and a plurality of row units are arranged longitudinally to form the tunable circuit resonator.

[0012] In each row unit, the coupling capacitor C1 and the coupling capacitor C2 are arranged alternately between the first subunit and the second subunit; in the longitudinal arrangement of the row unit, the coupling inductor L1 and the coupling inductor L2 are arranged alternately between the two adjacent first subunits; in the longitudinal arrangement of the row unit, the coupling capacitor C1 and the coupling capacitor C2 are arranged alternately between the two adjacent second subunits; and the first subunit and the second subunit at the edge of the tunable circuit resonator are grounded through the coupling capacitor C2 or the coupling inductor L2.

[0013] Optionally, the tunable circuit resonator is provided with N×M resonant subunits; N and M are both positive integers greater than or equal to 3.

[0014] Among them, the two first subunits adjacent to each other and the two second subunits at the corresponding positions adjacent to each other form a resonant subunit.

[0015] Optionally, the first subunit comprises: an inductor L g1 , a capacitor C A1 , a capacitor C A2 , a common cathode varactor diode C v1 , and a common cathode varactor diode C v2 .

[0016] The first end of the inductor L g1 , the first end of the capacitor C A1 , the first end of the capacitor C A2 , the first end of the common cathode varactor diode C v1 , and the first end of the common cathode varactor diode C v2The first ends of the subunits are connected to each other to form an output interface of the first subunit;

[0017] Inductor L g1 The second end of the capacitor C A1 The second end of the capacitor C A2 The second end of the common cathode varactor diode C v1 The second end and the common cathode varactor diode C v2 The second ends of the two terminals are connected to each other and grounded;

[0018] The second subunit includes: inductor L g2 、Inductor L B1 、Inductor L B2 , common cathode varactor diode C v3 And the common cathode varactor diode C v4 ;

[0019] Inductor L g2 The first end of the inductor L B1 The first end of the inductor L B2 The first end of the common cathode varactor diode C v3 The first end and the common cathode varactor diode C v4 The first ends of the subunits are connected to each other to form an output interface of the second subunit;

[0020] Inductor L g2 The second end of the inductor L B1 The second end of the inductor L B2 The second end of the common cathode varactor diode C v3 The second end and the common cathode varactor diode C v4 The second ends of the two terminals are connected to each other and grounded.

[0021] Optionally, the input terminals of the tunable circuit resonator are arranged at four corner nodes of the tunable circuit resonator.

[0022] Optionally, the inductor L g1 The inductance value is 1 microhenry, the inductance L g2 The inductance value of the coupled inductor L1 is 150 microhenry, the inductance value of the coupled inductor L2 is 15 microhenry, and the inductance L B1 The inductance value is 150 microhenries, the inductance L B2 The inductance is 15 microhenries; the capacitance of coupling capacitor C1 is 57 pF, the capacitance of coupling capacitor C2 is 570 pF, and the capacitance C A1 The capacitance value is 57 pF, the capacitor C A2 The capacitance is 570 pF.

[0023] Optionally, the first sub-units of the upper and lower sides of the tunable circuit resonator are grounded through the coupling inductance L2; the second sub-units of the upper and lower sides of the tunable circuit resonator are grounded through the coupling capacitance C2; the first sub-units of the left side of the tunable circuit resonator are grounded through the coupling capacitance C2; and the second sub-units of the right side of the tunable circuit resonator are grounded through the coupling capacitance C2.

[0024] The application provides a tunable circuit resonator based on a nonlinear high-order topological insulator, comprising: coupling inductance L1, coupling inductance L2, coupling capacitance C1, coupling capacitance C2, first sub-units and second sub-units; the plurality of coupling inductance L1, coupling inductance L2, coupling capacitance C1, coupling capacitance C2, first sub-units and second sub-units are periodically arranged to form the tunable circuit resonator; the capacitance value of the coupling capacitance C1 is smaller than the capacitance value of the coupling capacitance C2, the inductance value of the coupling inductance L1 is greater than the inductance value of the coupling inductance L2, and the structure arrangement of the tunable circuit resonator is based on a quadrupole topological insulator model in condensed matter physics. In the application, the tunability of the tunable circuit resonator is realized by using the quadrupole topological insulator model, which adapts to the changing working conditions; the robustness of the tunable circuit resonator is improved by using the robustness of the topological corner state of the quadrupole topological insulator model, and the tunable circuit resonator has a certain tolerance to circuit element errors; and since high-precision and high-cost circuit elements are not required, the manufacturing cost of the tunable circuit resonator is reduced.

[0025] The application will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structure schematic diagram of a tunable circuit resonator based on a nonlinear high-order topological insulator provided by the embodiments of the application is shown.

[0027] Figure 2 A result graph of the relationship between the resonant frequency of the tunable circuit resonator and the input terminal voltage when no error is introduced by the electronic device is exemplarily shown.

[0028] Figure 3 A result graph of the relationship between the resonant frequency of the tunable circuit resonator and the input terminal voltage when an error is introduced by the electronic device is exemplarily shown. DETAILED DESCRIPTION

[0029] Topological insulator is a new type of electronic material, which has the property of internal insulation and surface conduction. Because the surface state of topological insulator is topologically protected, the surface conduction capacity of topological insulator is robust and will not be affected by material defects and impurities. High-order topological insulator is a new branch of topological insulator field, which not only includes the characteristics of first-order topological insulator, but also introduces a new bulk-edge correspondence, allowing the emergence of new gapless edge states. In topological circuits, electrical signals are transmitted in the form of topological states, and errors in circuit elements will not affect signal transmission, and thus will not affect the performance of circuit devices. In the present application, nonlinearity is further introduced into the topological circuit, which helps to explore new physical phenomena and realize complex topological states, making its application in the fields of quantum computing, low-energy electronic devices, etc. more widely, while also promoting the discovery of new materials and the verification of theoretical models, bringing breakthrough progress to the research and application of topological circuits.

[0030] The present application applies the concept of high-order topological insulator to the design of electronic circuits and proposes a tunable circuit resonator based on a four-pole moment topological insulator model. The purpose is to overcome the shortcomings of traditional circuit resonators in robustness while realizing the tunability of resonator frequency. The design uses a pair of common-cathode varactor diodes, combined with low-precision capacitors and inductors, to construct a nonlinear four-pole moment topological circuit. The present application is derived from the topological corner state of nonlinear high-order topological insulator, successfully establishing the relationship between input voltage and resonant frequency. Even if certain errors are introduced into the elements in the circuit, the relationship between input voltage and resonant frequency can still remain stable. This not only improves the robustness of the tunable circuit resonator, but also realizes the dynamic tuning of the resonant frequency.

[0031] The present application will be further described in detail below in conjunction with specific embodiments, but the embodiments of the present application are not limited thereto.

[0032] In order to improve the robustness of the tunable circuit resonator while reducing the manufacturing cost of the tunable circuit resonator, the present application provides a tunable circuit resonator based on nonlinear high-order topological insulator. Figure 1 A structure diagram of a tunable circuit resonator based on nonlinear high-order topological insulator provided by the present application is shown in FIG. 1. Figure 1 As shown in FIG. 1, it includes coupling inductance L1, coupling inductance L2, coupling capacitance C1, coupling capacitance C2, first subunit and second subunit.

[0033] The plurality of coupling inductance L1, coupling inductance L2, coupling capacitance C1, coupling capacitance C2, first subunit and second subunit are periodically arranged to form a tunable circuit resonator.

[0034] The coupling capacitance C1 has a smaller capacitance value than the coupling capacitance C2, the coupling inductance L1 has a larger inductance value than the coupling inductance L2, and the structure of the tunable circuit resonator is based on a four-pole moment topological insulator model in condensed matter physics.

[0035] It should be noted that the embodiment is based on the four-pole moment topological insulator model to construct the circuit topological structure of the tunable circuit resonator. In actual engineering, the tunable circuit resonator can also be constructed by selecting other models in condensed matter physics, as long as the condensed matter physics model can achieve the technical effects of the embodiment, and belongs to the protection scope of the scheme. In addition, the tunable circuit resonator provided by the embodiment has a two-dimensional circuit structure, and in actual use, as long as the construction of the tunable circuit resonator meets the rules of the multi-pole moment topological insulator model, the construction of the tunable circuit resonator can also use a three-dimensional or even higher-dimensional circuit structure design.

[0036] The embodiment of the present application provides a tunable circuit resonator based on a nonlinear high-order topological insulator. By using the four-pole moment topological insulator model, the tunability of the tunable circuit resonator is realized, and the changing working conditions are adapted. The robustness of the topological angle state of the four-pole moment topological insulator model is used to improve the robustness of the tunable circuit resonator, and the circuit element error has a certain tolerance. Since high-precision and high-cost circuit elements are not required, the manufacturing cost of the tunable circuit resonator is reduced.

[0037] Optionally, the structure of the tunable circuit resonator is arranged as follows:

[0038] A plurality of first sub-units and a plurality of second sub-units are arranged alternately to form a row unit of the tunable circuit resonator; and a plurality of row units are arranged longitudinally to form the tunable circuit resonator.

[0039] In each row unit, the coupling capacitance C1 and the coupling capacitance C2 are arranged alternately between the first sub-unit and the second sub-unit; in the longitudinal arrangement of the row unit, the coupling inductance L1 and the coupling inductance L2 are arranged alternately between the two adjacent first sub-units; in the longitudinal arrangement of the row unit, the coupling capacitance C1 and the coupling capacitance C2 are arranged alternately between the two adjacent second sub-units; and the first sub-unit and the second sub-unit at the edge of the tunable circuit resonator are grounded through the coupling capacitance C2 or the coupling inductance L2.

[0040] Optionally, the tunable circuit resonator is provided with NXM resonant sub-units; N and M are both positive integers greater than or equal to 3.

[0041] Among them, the two first sub-units and the two second sub-units at the corresponding positions adjacent to each other constitute a resonant sub-unit.

[0042] It should be noted that, in order to facilitate the arrangement of components of the tunable circuit resonator, Figure 1 Specifically, 5×5 resonator units are used for schematic representation. However, the tunable circuit resonator may also be composed of N×M units, which is not limited in this embodiment.

[0043] It should be further explained that, generally, the larger the values ​​of N and M, the better the tunability of the tunable circuit resonator. In actual settings, specific settings can be made based on the size requirements, cost requirements, and tunability requirements of the resonator.

[0044] Optionally, the first subunit includes: an inductor L g1 , capacitor C A1 , capacitor C A2 , common cathode varactor diode C v1 And the common cathode varactor diode C v2 ;

[0045] Inductor L g1 The first end of the capacitor C A1 The first end of the capacitor C A2 The first end of the common cathode varactor diode C v1 The first end and the common cathode varactor diode C v2 The first ends of the subunits are connected to each other to form an output interface of the first subunit;

[0046] Inductor L g1 The second end of the capacitor C A1 The second end of the capacitor C A2 The second end of the common cathode varactor diode C v1 The second end and the common cathode varactor diode C v2 The second ends of the two terminals are connected to each other and grounded;

[0047] The second subunit includes: inductor L g2 、Inductor L B1 、Inductor L B2 , common cathode varactor diode C v3 And the common cathode varactor diode C v4 ;

[0048] Inductor L g2 The first end of the inductor L B1 The first end of the inductor L B2 The first end of the common cathode varactor diode C v3 The first end and the common cathode varactor diode C v4 The first ends of the subunits are connected to each other to form an output interface of the second subunit;

[0049] Inductor L g2 The second end of the inductor LB1 the second end of the inductor L B2 the second end of the common cathode varactor C v3 the second end of the inductor L and the common cathode varactor C v4 the second end of the inductor L and the common cathode varactor C are connected to each other and grounded.

[0050] In the embodiment, the tunability of the circuit resonator is achieved by introducing nonlinearity, which utilizes the nonlinear characteristic of the common cathode varactor. The nonlinearity makes the circuit resonator circuit have a tunable resonant frequency, and can achieve specific circuit functions and performance requirements.

[0051] Optionally, the input end of the tunable circuit resonator is arranged at four corner nodes of the tunable circuit resonator. Specifically, as shown in Figure 1 the embodiment of the present application places the input end of the tunable circuit resonator at the upper right corner of the tunable circuit resonator, which is indicated by the green dashed line box.

[0052] It should be noted that the input end of the tunable circuit resonator should be the outermost subunit at the four corners.

[0053] Optionally, the inductance of the inductor L g1 is 1 microhenry, the inductance of the inductor L g2 is 1 microhenry, the inductance of the coupling inductor L1 is 150 microhenry, the inductance of the coupling inductor L2 is 15 microhenry, the inductance of the inductor L B1 is 150 microhenry, the inductance of the inductor L B2 is 15 microhenry; the capacitance of the coupling capacitor C1 is 57 picofarads, the capacitance of the coupling capacitor C2 is 570 picofarads, the capacitance of the capacitor C A1 is 57 picofarads, and the capacitance of the capacitor C A2 is 570 picofarads.

[0054] Optionally, the first subunit of the upper and lower two sides of the tunable circuit resonator is grounded through the coupling inductor L2; the second subunit of the upper and lower two sides of the tunable circuit resonator is grounded through the coupling capacitor C2; the first subunit of the left side of the tunable circuit resonator is grounded through the coupling capacitor C2; and the second subunit of the right side of the tunable circuit resonator is grounded through the coupling capacitor C2.

[0055] The embodiment of the present application provides a tunable circuit resonator. Since the tunable circuit resonator circuit can be composed of passive elements, when the circuit elements in the tunable circuit resonator do not introduce errors, the resonant frequency of the tunable circuit resonator has a one-to-one correspondence with the input end voltage, and when the upper right corner of the tunable circuit resonator is taken as the input end, as shown by the second subunit indicated by the green dashed line box, Figure 1 the circuit resonator can achieve a tunable resonant frequency, as shown by Figure 2as shown in (a) of FIG. 1. For Figure 2 as shown in (a) of FIG. 1. For Figure 2 as shown in (a) of FIG. 1. For Figure 2 As can be seen from (b) of FIG. 1, since the present application is based on the topological corner state of the nonlinear high-order topological insulator, the voltage in the circuit is mainly distributed at the upper right corner of the circuit, i.e. at the input end, at the corresponding resonance frequency.

[0056] In order to verify that the tunable circuit resonator based on the nonlinear high-order topological insulator provided in the embodiments of the present application has a certain robustness, in the present embodiment, a certain error is added to the devices in the circuit, and the relationship between the resonance frequency and the voltage after adding the error is analyzed.

[0057] Specifically, the circuit characteristics of the tunable circuit resonator in the present embodiment are derived from the topological corner state of the nonlinear high-order topological insulator. Since the topological corner state of the nonlinear high-order topological insulator has robustness, i.e. has a certain tolerance to the error of the circuit elements, the designed nonlinear circuit resonator has robustness. Further, the applicant has found through experiments that when the coupling inductance L1, the coupling inductance L2, the coupling capacitance C1, the coupling capacitance C2, the capacitance C A1 and the capacitance C A2 in the first subunit, and the inductance L B1 and the inductance L B2 in the second subunit introduce an error of ±3%, for 15 groups of parameters, the one-to-one correspondence between the resonance frequency and the input end voltage still exists and the difference is small, as shown in (a) of FIG. 2. It is verified that the tunable circuit resonator has a certain robustness. Figure 3

[0058] In summary, the tunable circuit resonator based on the nonlinear high-order topological insulator provided in the embodiments of the present application can have a certain error in the coupling inductance element and the coupling capacitance element, i.e. the existing low-precision elements in the market can be used to realize the tunable circuit resonator. The cost of the circuit is reduced, and the problem that the existing circuit elements cannot meet the demand is avoided. Since the topological corner state of the high-order topological insulator has robustness, the influence of the device error is fundamentally reduced, thereby improving the robustness of the tunable circuit resonator. Finally, since the nonlinear effect is ingeniously introduced in the circuit structure of the high-order topological insulator, this innovative design endows the resonator with the tunable characteristic, breaks the limitation of the fixed resonance frequency, and enables the resonator to adjust its working frequency according to different application requirements, greatly expanding its application range and flexibility.

[0059] ​It is to be understood that the terms "first", "second", and the like, used in the description and in the claims, are used to describe different features and do not imply a particular order or sequence. It is to be understood that the data used herein can be interchanged, where appropriate, so that an embodiment described herein could be carried out in a different order than the one illustrated or described herein.

[0060] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific feature or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the description of the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described can be combined in any appropriate manner in one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification.

[0061] Although the present application is described herein in conjunction with various embodiments, those skilled in the art, with the benefit of the drawings and the disclosure, can understand and implement other variations of the disclosed embodiments in the implementation of the claimed application. In the description of the present application, the word "comprising" does not exclude other components or steps, "a" or "one" does not exclude a plurality, and "a plurality" means two or more, unless otherwise expressly specified. In addition, some measures are described in different embodiments, but this does not mean that these measures cannot be combined to produce good results.

[0062] The above is a further detailed description of the present application in conjunction with specific preferred embodiments, and cannot be considered as limiting the specific implementation of the present application to these descriptions. For those skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be considered as falling within the scope of protection of the present application.

Claims

1. A tunable circuit resonator based on a nonlinear higher-order topological insulator, characterized by, The adjustable circuit resonator comprises: a coupling inductor L1, a coupling inductor L2, a coupling capacitor C1, a coupling capacitor C2, a first subunit and a second subunit; The plurality of coupling inductors L1, coupling inductors L2, coupling capacitors C1, coupling capacitors C2, the first sub-unit and the second sub-unit are periodically arranged to form the tunable circuit resonator; the first sub-unit comprises: an inductor L g1 , a capacitor C A1 , a capacitor C A2 , a common cathode varactor diode C v1 and a common cathode varactor diode C v2 ; the first end of the inductor L g1 the first end of the capacitor C A1 the first end of the capacitor C A2 the first end of the common cathode varicap diode C v1 the first end of the common cathode varicap diode C v2 the first end of the common cathode varicap diode C the second end of the capacitor C g1 the second end of the capacitor C A1 the second end of the capacitor C A2 the second end of the common cathode varicap diode C v1 the second end of the common cathode varicap diode C v2 are connected to each other and to ground; The second sub-unit comprises an inductor L g2 , an inductor L B1 , an inductor L B2 , a common cathode varicap C v3 and a common cathode varicap C v4 ; a first end of the inductor L g2 a first end of the inductor L B1 a first end of the inductor L B2 a first end of the common cathode varicap C v3 a first end of the common cathode varicap C v4 a first end of the common cathode varicap C the second end of the inductor L g2 the second end of the inductor L B1 the second end of the inductor L B2 the second end of the common cathode varicap diode C v3 the second end of the common cathode varicap diode C v4 the second end of the common cathode varicap diode C The coupling capacitor C1 has a smaller capacitance than the coupling capacitor C2, the coupling inductor L1 has a larger inductance than the coupling inductor L2, and the structure of the adjustable circuit resonator is based on a quadrupole topological insulator model in condensed matter physics.

2. The tunable circuit resonator based on nonlinear higher-order topological insulator of claim 1, wherein, The structure of the adjustable circuit resonator is that a plurality of the first subunits and a plurality of the second subunits are alternately arranged to form a row unit of the adjustable circuit resonator, and a plurality of the row units are arranged longitudinally to form the adjustable circuit resonator. In each of the row units, the first subunits and the second subunits are alternately provided with the coupling capacitor C1 and the coupling capacitor C2; in the longitudinal arrangement of the row units, the coupling inductor L1 and the coupling inductor L2 are alternately arranged between two adjacent first subunits; in the longitudinal arrangement of the row units, the coupling capacitor C1 and the coupling capacitor C2 are alternately arranged between two adjacent second subunits; and the first subunits and the second subunits at the edges of the adjustable circuit resonator are grounded through the coupling capacitor C2 or the coupling inductor L2.

3. The tunable circuit resonator based on nonlinear higher-order topological insulator of claim 2, wherein, The tunable circuit resonator is provided with a resonator unit; and are positive integers greater than or equal to 3. The first subunits and the second subunits at the edges of the adjustable circuit resonator are grounded through the coupling capacitor C2 or the coupling inductor L2.

4. The tunable circuit resonator based on nonlinear higher-order topological insulator of claim 1, wherein, The input end of the adjustable circuit resonator is arranged at four corner nodes of the adjustable circuit resonator.

5. The adjustable circuit resonator based on a nonlinear high-order topological insulator according to claim 1, wherein inductance L g1 of 1 microhenry, the inductance L g2 of 1 microhenry, the inductance L B1 of 150 microhenry, the inductance L B2 of 15 microhenry; the capacitance C A1 of 57 picofarad, the capacitance C A2 of 570 picofarad.

6. The adjustable circuit resonator based on a nonlinear high-order topological insulator according to claim 2, wherein The first subunits at the upper and lower sides of the adjustable circuit resonator are grounded through the coupling inductor L2, the second subunits at the upper and lower sides of the adjustable circuit resonator are grounded through the coupling capacitor C2, the first subunits at the left side of the adjustable circuit resonator are grounded through the coupling capacitor C2, and the second subunits at the right side of the adjustable circuit resonator are grounded through the coupling capacitor C2.

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