A method and system for analyzing performance of microwave switches without common channels

Abstract

The present invention provides a method and system for analyzing the performance of a microwave switch without a common channel, and relates to the field of radio frequency microwave technology. The method comprises: determining an equivalent circuit model of a microwave switch; obtaining electrical characteristics and behaviors of the microwave switch in a circuit according to the equivalent circuit model; measuring scattering parameters of the microwave switch under the action of a control signal according to the electrical characteristics and behaviors to obtain performance indicators of the microwave switch; analyzing the transmission characteristics of the microwave switch according to the performance indicators to obtain transmission characteristics of the microwave switch in different states; and evaluating the power handling capacity, switching speed and linearity performance of the microwave switch according to the transmission characteristics of the microwave switch in different states to obtain performance evaluation results. The present invention can quickly obtain the electrical characteristics and behaviors of the microwave switch in a circuit, thereby simplifying the steps of performance analysis and improving analysis efficiency.

Description

Technical Field

[0001] The present invention relates to the field of radio frequency microwave technology, and in particular to a method and system for analyzing performance of a microwave switch without a common channel. Background Art

[0002] Microwave switches are key components in microwave systems, and they control the conversion of microwave signal channels. Microwave switches are widely used in microwave test systems, radar systems, and communication systems. Among them, non-common channel microwave switches are a special type of microwave switch, which is designed to avoid unnecessary interference between multiple channels.

[0003] Traditional microwave switch performance analysis methods often rely on complex test equipment and tedious test steps, and may not fully reflect the performance of microwave switches under various working conditions. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method and system for analyzing the performance of a microwave switch without a common channel, which can quickly obtain the electrical characteristics and behavior of the microwave switch in the circuit, thereby simplifying the steps of performance analysis and improving analysis efficiency.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] In a first aspect, a method for analyzing performance of a microwave switch without a common channel is provided, the method comprising:

[0007] Determine the equivalent circuit model of the microwave switch;

[0008] Based on the equivalent circuit model, the electrical characteristics and behaviors of the microwave switch in the circuit are obtained;

[0009] According to the electrical characteristics and behaviors, the scattering parameters of the microwave switch under the control signal are measured to obtain the performance indicators of the microwave switch;

[0010] Through the performance index, the transmission characteristics of the microwave switch are analyzed to obtain the transmission characteristics of the microwave switch in different states;

[0011] According to the transmission characteristics of the microwave switch in different states, the power handling capability, switching speed and linearity performance of the microwave switch are evaluated to obtain the performance evaluation results;

[0012] Based on the performance evaluation results, the microwave switch is optimized to improve the performance indicators of the microwave switch without common channel.

[0013] Furthermore, based on the electrical characteristics and behavior, the scattering parameters of the microwave switch under the control signal are measured to obtain the performance indicators of the microwave switch, including:

[0014] Measuring parameters of microwave devices in a specific frequency range by using an analyzer based on electrical characteristics and behavior;

[0015] During the measurement process, a control signal is applied to the microwave switch to obtain the change of the scattering parameters of the microwave switch in different states;

[0016] By changing the scattering parameters, the insertion loss, return loss and isolation of the microwave switch in the on state are calculated;

[0017] The performance indicators of microwave switches can be obtained based on insertion loss, return loss and isolation.

[0018] Furthermore, the calculation formula for insertion loss is:

[0019]

[0020] Where IL represents insertion loss; Z0 represents characteristic impedance; Z in (f) represents the input impedance of the microwave switch; f represents the frequency of the signal.

[0021] Furthermore, the return loss calculation formula is:

[0022]

[0023] Where RL represents the return loss; Γ(f) represents the reflection coefficient; γ(f) represents the propagation constant; l represents the length of the transmission line; and e represents the base of the natural logarithm.

[0024] Furthermore, the calculation formula of isolation is:

[0025]

[0026] Among them, I s Indicates isolation; S 21 represents the scattering parameter; off represents the microwave switch off state; Γ source represents the reflection coefficient at the source end; Γ load represents the reflection coefficient at the load end; a(f) represents the attenuation constant; d represents the effective distance of signal propagation.

[0027] Furthermore, the transmission characteristics of the microwave switch are analyzed through performance indicators to obtain the transmission characteristics of the microwave switch in different states, including:

[0028] Obtain scattering parameters through performance indicators;

[0029] According to the scattering parameters, the amplitude ratio of the scattering parameters in the on state and the off state is calculated;

[0030] According to the amplitude ratio of the scattering parameters, the signal passing ability of the microwave switch when it is turned on and the signal blocking ability when it is turned off can be obtained;

[0031] Calculate the phase difference of the scattering parameters of the microwave switch in the on and off states, and determine the impact of the switch state switching on the signal phase;

[0032] According to the amplitude ratio and phase difference, the transmission characteristics of the microwave switch in different states can be obtained.

[0033] Furthermore, the amplitude ratio calculation formula of the scattering parameters is:

[0034]

[0035] Wherein, AR represents the amplitude ratio of the scattering parameter; on represents the on-state of the microwave switch; ω represents the frequency; T represents the temperature; and V represents the voltage.

[0036] In a second aspect, a non-common channel microwave switch performance analysis system includes:

[0037] An acquisition module is used to determine an equivalent circuit model of the microwave switch; based on the equivalent circuit model, the electrical characteristics and behavior of the microwave switch in the circuit are obtained; based on the electrical characteristics and behavior, the scattering parameters of the microwave switch under the control signal are measured to obtain the performance index of the microwave switch;

[0038] The processing module is used to analyze the transmission characteristics of the microwave switch through performance indicators to obtain the transmission characteristics of the microwave switch in different states; based on the transmission characteristics of the microwave switch in different states, the power handling capacity, switching speed and linearity performance of the microwave switch are evaluated to obtain performance evaluation results; and based on the performance evaluation results, the microwave switch is optimized to improve the performance indicators of the microwave switch without common channel.

[0039] According to a third aspect, a computing device includes:

[0040] one or more processors;

[0041] The storage device is used to store one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the method described.

[0042] In a fourth aspect, a computer-readable storage medium stores a program, and when the program is executed by a processor, the method described is implemented.

[0043] The above solution of the present invention includes at least the following beneficial effects:

[0044] By determining the equivalent circuit model, this method can quickly obtain the electrical characteristics and behavior of the microwave switch in the circuit, thereby simplifying the performance analysis steps and improving the analysis efficiency. By measuring the scattering parameters and evaluating the transmission characteristics under different states, this method can fully reflect the key performance indicators of the microwave switch, such as power handling capability, switching speed and linearity. Through the performance evaluation results, the design of the microwave switch without common channels can be optimized in a targeted manner to further improve its performance indicators and meet higher system requirements. The design without common channels can reduce interference between channels, improve signal purity and system stability. Accurate analysis of switch performance through this method helps to ensure that this design advantage is fully utilized. Accurate performance analysis helps to discover and solve potential design defects in advance, thereby improving the reliability and durability of the entire microwave system. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a flow chart of a method for analyzing performance of a microwave switch without a common channel provided by an embodiment of the present invention.

[0046] Figure 2 It is a schematic diagram of a performance analysis system for a microwave switch without a common channel provided by an embodiment of the present invention.

[0047] Figure 3 It is a front view of a microwave switch with a common channel provided by an embodiment of the present invention.

[0048] Figure 4 It is a structural diagram of a common channel microwave switch support part provided by an embodiment of the present invention.

[0049] Figure 5 This is a second slot structure diagram of a microwave switch containing a common channel provided by an embodiment of the present invention.

[0050] Figure 6 This is a front view of a microwave switch without a common channel provided by an embodiment of the present invention.

[0051] Figure 7 This is a first slot structure diagram of a microwave switch without a common channel provided by an embodiment of the present invention.

[0052] Figure 8 It is a structural diagram of a supporting portion of a microwave switch without a common channel provided by an embodiment of the present invention.

[0053] Explanation of the reference numerals: 1. Channel 1; 2. Channel 2; 3. Channel 3; 4. Channel 4; 5. Channel 5; 6. Channel N; 7. First slot; 8. Support portion; 9. Center conductor sheet; 10. Cavity wall; 11. Common channel; 12. Channel 5 inner conductor; 13. Channel 2 inner conductor; 14. Common inner conductor; 15. Channel 5 transmission sheet; 16. Channel 2 transmission sheet; 17. Second slot. DETAILED DESCRIPTION

[0054] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0055] like Figure 1 As shown, an embodiment of the present invention provides a method for analyzing performance of a microwave switch without a common channel, the method comprising the following steps:

[0056] Step 1, determining an equivalent circuit model of a microwave switch;

[0057] Step 2, obtaining the electrical characteristics and behavior of the microwave switch in the circuit according to the equivalent circuit model;

[0058] Step 3, measuring the scattering parameters of the microwave switch under the control signal according to the electrical characteristics and behaviors, so as to obtain the performance index of the microwave switch;

[0059] Step 4, analyzing the transmission characteristics of the microwave switch through performance indicators to obtain the transmission characteristics of the microwave switch in different states;

[0060] Step 5: According to the transmission characteristics of the microwave switch in different states, the power handling capability, switching speed and linearity performance of the microwave switch are evaluated to obtain a performance evaluation result.

[0061] In an embodiment of the present invention, the performance of the microwave switch can be predicted and optimized at an early stage through an equivalent circuit model and electrical characteristics analysis, thereby reducing the workload of later debugging and modification and improving design efficiency. Through precise scattering parameter measurement and transmission characteristics analysis, the performance of the microwave switch can be accurately evaluated, providing strong support for product quality control and reliability. The optimized design based on the performance evaluation results can specifically improve the key performance of the microwave switch, such as power handling capability, switching speed and linearity, to meet more stringent application requirements. The design without common channels makes the application of microwave switches more flexible, no longer limited to the traditional common port connection method, and helps to broaden its application scope in different fields. Through optimized design, it is possible to reduce the complexity and material cost of microwave switches, while improving their performance and reliability and reducing overall production costs.

[0062] In a preferred embodiment of the present invention, the above step 1, determining the equivalent circuit model of the microwave switch, may include:

[0063] In step 1, determining the equivalent circuit model of the microwave switch is the basis of the entire performance analysis process. The equivalent circuit model is a simplified circuit representation that simulates the actual behavior of the microwave switch in the circuit. In order to build this model, it is necessary to have a deep understanding of the working principle, material properties, and structural characteristics of the microwave switch.

[0064] First, collect relevant data about the microwave switch, including its physical dimensions, material properties (such as dielectric constant, magnetic permeability, etc.), operating frequency range, and expected electrical performance. Next, based on the collected data, circuit simulation software (such as ADS, HFSS, etc.) can be used to build an equivalent circuit for the microwave switch. This model usually includes basic circuit elements such as inductors, capacitors, resistors, and transmission lines, and the parameters of these elements need to be set according to the actual physical characteristics of the microwave switch. Finally, by comparing the simulation results with the actual measurement results, the model can be verified and optimized to ensure that it can accurately reflect the actual performance of the microwave switch.

[0065] In step 2, an accurate equivalent circuit model has been established. Next, this model needs to be used to analyze the electrical characteristics and behavior of the microwave switch in the circuit. First, the equivalent circuit model can be simulated and analyzed using circuit simulation software. During the simulation process, different input signals and control conditions can be set to observe the response of the microwave switch under different conditions. Through simulation analysis, a series of electrical characteristic parameters of the microwave switch can be obtained, such as insertion loss, return loss, isolation, etc. These parameters are important indicators for evaluating the performance of microwave switches, and they reflect the efficiency and accuracy of the microwave switch when transmitting microwave signals.

[0066] In a preferred embodiment of the present invention, the above step 3, measuring the scattering parameters of the microwave switch under the control signal according to the electrical characteristics and behaviors to obtain the performance index of the microwave switch, may include:

[0067] Step 31, measuring parameters of the microwave device within a specific frequency range by using an analyzer based on the electrical characteristics and behavior;

[0068] Step 32, during the measurement process, applying a control signal to the microwave switch to obtain changes in scattering parameters of the microwave switch in different states;

[0069] Step 33, calculating the insertion loss, return loss and isolation of the microwave switch in the on state through the change of the scattering parameters;

[0070] Step 34, obtaining the microwave switch performance index according to the insertion loss, return loss and isolation.

[0071] In the embodiment of the present invention, a network analyzer is selected to ensure that its frequency range covers the operating frequency of the microwave switch. The network analyzer is properly connected to the microwave switch and a calibration step is performed to ensure the accuracy of the measurement. The frequency range and number of measurement points to be measured are set on the network analyzer. A control signal source is prepared and connected to ensure that the state of the microwave switch (on or off) can be accurately controlled. During the measurement process, a control signal is synchronously applied to switch the microwave switch to different states during the measurement. The scattering parameters (such as S 11 , S 21 , S 12 , S 22 etc.), pay special attention to record S 21 The change of parameters is important because it directly reflects the transmission characteristics of the microwave switch.

[0072] Insertion loss is calculated using the S21 parameter in the on state, usually by comparing the S 21 The return loss is calculated using the S11 parameter, which reflects the matching degree of the microwave switch input port. 21 Parameters are used to evaluate the isolation of microwave switches, that is, the degree of signal leakage from the input port to the output port. The calculated insertion loss, return loss and isolation data are summarized to form a performance report of the microwave switch. According to the application requirements, these performance indicators are evaluated to see whether they meet the design requirements, such as whether the insertion loss is low enough, and whether the return loss and isolation meet the predetermined standards. These performance indicators are not only used to evaluate the current performance of microwave switches, but also serve as the basis for subsequent optimization design and product selection.

[0073] By measuring the scattering parameters of microwave switches under the action of control signals, the performance of microwave switches in different states can be accurately evaluated, including key indicators such as insertion loss, return loss and isolation. This helps to fully understand the performance of the switch and ensure that it meets the design requirements. By measuring and analyzing the electrical characteristics and behavior of microwave switches, designers can find potential performance bottlenecks and problems, which helps to improve the overall performance and reliability of the product. By accurately measuring the scattering parameters of microwave switches, products with poor performance can be screened out, thereby improving the quality and consistency of factory products. Understanding the scattering parameters and performance indicators of microwave switches in different states can help users choose the appropriate product model and specifications according to actual needs. This helps to ensure the best performance and stability of microwave switches in actual applications.

[0074] In a preferred embodiment of the present invention, the calculation formula of insertion loss is:

[0075]

[0076] Where IL represents insertion loss; Z0 represents characteristic impedance; Z in (f) represents the input impedance of the microwave switch; f represents the frequency of the signal.

[0077] In the embodiment of the present invention, the characteristic impedance Z0 is an inherent property of the transmission line, which describes the impedance characteristics of the signal when it propagates on the transmission line. In the microwave system, the characteristic impedance used is 50 ohms. This is a standardized value used to ensure maximum power transmission and minimum reflection in the system. The microwave switch input impedance Z in (f) varies with frequency and describes the impedance characteristics of the switch to the input signal. When the signal passes through the microwave switch, the input impedance of the switch affects the transmission efficiency of the signal. Ideally, the input impedance of the switch should match the characteristic impedance of the transmission line to minimize reflections and losses. The frequency f of the microwave signal has a direct impact on the insertion loss. Due to the frequency response characteristics of microwave switches and other microwave devices, signals of different frequencies experience different losses. Therefore, when calculating the insertion loss, the specific frequency of the signal needs to be considered. The insertion loss IL is calculated by comparing the input impedance of the microwave switch with the characteristic impedance. It reflects the power loss caused by impedance mismatch when the signal passes through the microwave switch. If the input impedance of the switch is completely matched with the characteristic impedance (that is, Z in (f) = Z0), the insertion loss will be minimal. However, in actual situations, there is often impedance mismatch, which leads to a certain power loss.

[0078] This formula can accurately calculate the insertion loss of a microwave switch at a specific frequency, which is an important indicator for evaluating switch performance. This helps engineers understand the efficiency of the switch in signal transmission and the impact it may have on system performance. The calculation results of the insertion loss can provide direct guidance for the optimal design of microwave switches. By comparing the insertion loss under different designs or different materials, the best design can be selected to reduce signal attenuation and improve system efficiency. In the production process, this formula can be used as a means of quality control and detection. By measuring the input impedance of the microwave switch and calculating the insertion loss, it can be ensured that the produced switch meets the performance requirements, thereby improving the product's qualification rate and reliability. When a microwave system fails, calculating the insertion loss of different parts can help engineers quickly locate the problem. If the insertion loss of a switch or connection point is abnormally high, then this may be where the failure occurred. The calculation formula for insertion loss has promoted the continuous innovation of microwave switch technology. In order to reduce insertion loss, engineers will continue to explore new materials, structures and design methods, thereby promoting technological progress throughout the industry. Reducing insertion loss means improving energy transmission efficiency.

[0079] In a preferred embodiment of the present invention, the calculation formula of return loss is:

[0080]

[0081] Where RL represents the return loss; Γ(f) represents the reflection coefficient; γ(f) represents the propagation constant; l represents the length of the transmission line; and e represents the base of the natural logarithm.

[0082] In the embodiment of the present invention, RL represents the degree to which the signal is reflected back to the transmitting end during the transmission process. Ideally, high return loss means that little signal is reflected. Input impedance Z in The degree of matching between (f) and the characteristic impedance Z0 is the key factor in determining the return loss. The reflection coefficient Γ(f) is a complex number that represents the proportion of the signal reflected at a certain point on the transmission line at a specific frequency. The size of the reflection coefficient is directly affected by the degree of impedance matching. The propagation constant γ(f) is a complex number that describes the attenuation and phase change of the signal when it propagates on the transmission line. It is related to factors such as the frequency of the signal, the material and structure of the transmission line. The length l of the transmission line will affect the attenuation and phase change of the signal during transmission, thereby affecting the reflection coefficient and return loss. The base of the natural logarithm e is a mathematical constant used to calculate the exponential attenuation of the signal.

[0083] Specifically, when a signal propagates on a transmission line, if there is an impedance mismatch, part of the signal will be reflected back to the transmitter, causing energy loss and potential signal interference. The calculation formula for return loss takes into account factors such as the degree of impedance matching, signal attenuation and phase change on the transmission line, and reflection coefficient to quantify this reflection phenomenon. By optimizing these factors, signal reflection can be reduced and return loss can be increased, thereby achieving more efficient signal transmission.

[0084] By calculating the return loss, the performance of microwave devices or systems can be accurately evaluated. It helps to understand the reflection of signals at specific frequencies, so as to optimize the problem and improve the quality and efficiency of signal transmission. In the design stage of microwave equipment and devices, the return loss formula can guide designers to choose appropriate materials and structures to reduce signal reflections and improve overall performance. At the same time, it can also serve as an important reference indicator for selection. When a microwave system fails, by monitoring the change in return loss, possible problems can be quickly located. For example, if the return loss suddenly increases, it may mean that there is an impedance mismatch or connection problem somewhere. Reducing signal reflection means reducing unnecessary interference in the system, which helps to improve the stability and reliability of the system.

[0085] In a preferred embodiment of the present invention, the calculation formula of isolation is:

[0086]

[0087] Among them, I s Indicates isolation; S 21 represents the scattering parameter; off represents the microwave switch off state; Γ source represents the reflection coefficient at the source end; Γ load represents the reflection coefficient at the load end; a(f) represents the attenuation constant; d represents the effective distance of signal propagation.

[0088] In the embodiment of the present invention, Is represents the degree of signal isolation between the input and output ports of the microwave switch in the off state. The higher the isolation, the less signal leakage when the switch is off. 21 Represents the signal transmission coefficient from the input port to the output port. Ideally, when the switch is off, this value should be close to zero, indicating that no signal passes through the switch. Source end reflection coefficient Γ load and the load end reflection coefficient Γ loadDescribes the reflection of the signal at the source and load ends. When the signal encounters an impedance mismatch, reflection occurs, affecting the calculation of isolation. The attenuation constant a(f) is a frequency-dependent parameter that describes the attenuation of the signal during transmission. The larger the attenuation constant, the more energy the signal loses during propagation. The effective distance d of signal propagation is the effective distance that the signal travels from the source to the load. The longer the distance, the greater the attenuation of the signal during propagation.

[0089] Specifically, when the microwave switch is in the off state, the signal at the input port should not leak to the output port ideally. However, in practical applications, there will always be a certain degree of signal leakage due to factors such as the internal structure, material properties, and external environment of the switch. The calculation formula for isolation comprehensively considers factors such as the signal transmission coefficient in the off state of the switch, the reflection coefficient at the source and load ends, the attenuation of the signal, and the propagation distance to quantify this leakage phenomenon.

[0090] In a preferred embodiment of the present invention, the above step 4, analyzing the transmission characteristics of the microwave switch through performance indicators to obtain the transmission characteristics of the microwave switch in different states, may include:

[0091] Step 41, obtaining scattering parameters through performance indicators;

[0092] Step 42, calculating the amplitude ratio of the scattering parameters in the on state and the off state according to the scattering parameters;

[0093] Step 43, according to the amplitude ratio of the scattering parameters, the signal passing capability of the microwave switch when it is turned on and the signal blocking capability when it is turned off are obtained;

[0094] Step 44, calculating the phase difference of the scattering parameters of the microwave switch in the on state and the off state, and determining the influence of the switch state switching on the signal phase;

[0095] Step 45, obtaining the transmission characteristics of the microwave switch in different states according to the amplitude ratio and the phase difference.

[0096] In the embodiment of the present invention, the scattering parameters (S parameters) obtained in step 3 above are key indicators for measuring the performance of microwave components, including the forward transmission coefficient S 21 , reverse transmission coefficient S 12 , input reflection coefficient S 11 and the output reflection coefficient S 22, which can fully reflect the transmission and reflection characteristics of the microwave switch. Extract the S21 parameters of the microwave switch in the on and off states. These parameters represent the transmission amplitude of the signal. Calculate the amplitude ratio of the S21 parameters in the two states. This ratio can reflect the difference in signal transmission capabilities of the microwave switch in the on and off states. According to the amplitude ratio of the scattering parameters, it is obtained that the microwave switch has a larger amplitude ratio of the signal passing ability when it is on and the signal blocking ability when it is off. This means that the microwave switch has better signal passing ability in the on state and stronger signal blocking ability in the off state. By analyzing this ratio, the performance of the microwave switch and its working efficiency in different states can be evaluated. In addition to the amplitude, the phase change after the signal passes through the microwave switch also needs to be considered. Extract the phase information of the S21 parameters of the microwave switch in the on and off states. Calculate the phase difference between the two states, specifically based on The phase difference is obtained, where Indicates phase difference; S represents the microwave switch in the on state 21 Phase of parameter Indicates the S of the microwave switch in the off state 21 The phase of the parameter. This difference reflects the specific impact of the switch state switching on the signal phase. Combining the information of amplitude ratio and phase difference can fully describe the transmission characteristics of the microwave switch in different states. The amplitude ratio provides the switch's ability to control the signal strength, while the phase difference reveals the impact of the switch on the signal phase.

[0097] Obtaining scattering parameters through performance indicators can fully reflect the transmission and reflection characteristics of microwave switches. Calculating the amplitude ratio of scattering parameters in the on and off states helps to intuitively understand the signal transmission efficiency of the switch in different states, and provides an important indicator for evaluating switch performance. Through the amplitude ratio, the signal passing ability of the microwave switch when it is on and the signal blocking ability when it is off can be clearly obtained. Calculating the phase difference and determining the impact of the switch state switching on the signal phase helps to understand the phase change of the signal after passing through the switch. Combining the amplitude ratio and phase difference, the transmission characteristics of the microwave switch in different states can be fully obtained, which provides strong support for optimizing switch design and improving switch performance, and also helps to better select and configure microwave switches in practical applications.

[0098] In a preferred embodiment of the present invention, the amplitude ratio calculation formula of the scattering parameters is:

[0099]

[0100] Wherein, AR represents the amplitude ratio of the scattering parameter; on represents the on-state of the microwave switch; ω represents the frequency; T represents the temperature; and V represents the voltage.

[0101] In the embodiment of the present invention, S 21 The parameter is one of the scattering parameters and is used to describe the ability of a signal to be transmitted from port 1 to port 2 in a two-port network. In the context of a microwave switch, it indicates the efficiency of the switch in signal transmission. By comparing the S 21 Parameters can be used to understand the transmission performance of the switch in different states. 21 The parameter reflects the ability of the switch to allow the signal to pass, while the S 21 The parameter reflects the ability of the switch to prevent the signal from passing. Calculate S in two states 21 The parameter amplitude ratio AR can provide a quantitative indicator for evaluating the performance of microwave switches. A high amplitude ratio means that the switch has good signal transmission capability in the on state and good signal isolation capability in the off state. ω, T and V in the formula represent frequency, temperature and voltage respectively, which will affect the transmission performance of microwave switches. By measuring S under different ω, T and V conditions, 21 Parameters can provide a comprehensive understanding of the performance of microwave switches in various working environments.

[0102] The amplitude ratio AR provides a quantitative evaluation index for the performance of microwave switches. 21 The parameter amplitude ratio can clearly understand the difference in signal transmission efficiency of the switch in different states. This formula allows the performance of the microwave switch in the on and off states to be compared, which is the key to evaluating the effectiveness of the switch. An ideal microwave switch should have high transmission efficiency in the on state and low transmission efficiency in the off state to ensure effective control and isolation of the signal. The inclusion of variables such as frequency ω, temperature T, and voltage V means that the performance of the microwave switch under different working conditions is fully considered. By calculating the amplitude ratio, the design of the microwave switch can be optimized more specifically, or a more informed decision can be made when selecting a suitable microwave switch. This helps to improve the performance and efficiency of the overall system. Continuous monitoring of the amplitude ratio can also be used as a means to predict potential failures of the microwave switch. If the amplitude ratio changes significantly, it means that the switch performance is degraded or there is a risk of failure, so that maintenance or replacement can be carried out in time.

[0103] like Figures 3 to 5As shown, in specific applications, the RF part of the conventional microwave switch includes peripheral channels (channel 1, channel 2, channel 3, channel 4, channel 5, channel N) and the middle common channel 11. When the channel 2 transmission plate receives the control instruction, performs a switching action, and is connected to the middle common inner conductor 14, channel 2 forms a loop with the middle common channel 11, and channel 2 and the middle common channel 11 serve as input and output ports, respectively, for interconnection. When the channel 2 transmission plate 16 is disconnected, the transmission plates other than the channel 2 transmission plate 16 are connected to the common inner conductor, and the channels other than channel 2 form a loop with the common channel.

[0104] Therefore, the middle common channel of this switch is always involved in the switching. One end of the cable must be connected to the common port, which will limit its use. In addition, with N ports around it, only N channels can be switched.

[0105] like Figures 6 to 8 As shown, the switch completely eliminates the intermediate common channel. The signal can be transmitted directly between any two ports without going through additional transit links, thereby improving the efficiency and flexibility of signal switching. N (channel 1, channel 2, channel 3, channel 4, channel 5, channel N) ports are arranged around the switch, and these ports can be interconnected in pairs. By precisely controlling the state of the center conductor sheet 9, signal switching from any port to another can be achieved. This design provides N×(N-1) / 2 different channel switching combinations. Compared with traditional switches, the number of available channel combinations is increased, which is (N-1) / 2 times that of traditional switches. This high degree of flexibility and scalability enables the switch to adapt to various complex signal switching requirements.

[0106] In order to ensure the stability and reliability of the central conductor sheet 9, the switch adopts a support structure. The structure uses a non-metallic low dielectric constant material as a support member, one end of which is fixed to the switch cavity wall 10, and the other end of the support part 8 supports the central conductor sheet 9. This design not only provides a stable support for the conductor sheet, but also effectively reduces the loss and interference of the signal during the transmission process, thereby ensuring high-quality transmission of the signal.

[0107] A first slot 7 is designed on the center conductor sheet to increase the isolation between channels and reduce the crosstalk between channels. This slot structure differs from the second slot 17 in the traditional technology in principle, function and application field. The second slot 17 is used in the field of industrial control and adopts the principle of optocoupler isolation, using the photoelectric effect to transform the signal. The input and output of the center conductor are current signals, and the center conductor is an optical signal. The optical signal is used to electrically isolate the input and output, and there is no channel switching function. The first slot 7 is in the field of radio frequency microwaves and belongs to a radio frequency switch. Radio frequency microwaves are transmitted at the center conductor and are used for radio frequency channel switching. By carefully designing and optimizing the shape and layout of the slots, the purity and transmission efficiency of the signal can be improved.

[0108] In summary, the microwave switch without common channel provides an efficient, flexible and stable microwave signal switching solution by eliminating the intermediate common channel, realizing arbitrary interconnection of ports, adopting special support structure and slot design and other technical means. This switch has broad application prospects in the field of radio frequency microwaves and promotes the development and innovation of technology.

[0109] like Figure 2 As shown, an embodiment of the present invention further provides a non-common channel microwave switch performance analysis system 20, comprising:

[0110] The acquisition module 21 is used to determine the equivalent circuit model of the microwave switch; obtain the electrical characteristics and behavior of the microwave switch in the circuit according to the equivalent circuit model; and measure the scattering parameters of the microwave switch under the control signal according to the electrical characteristics and behavior to obtain the performance index of the microwave switch;

[0111] The processing module 22 is used to analyze the transmission characteristics of the microwave switch through performance indicators to obtain the transmission characteristics of the microwave switch in different states; evaluate the power handling capability, switching speed and linearity performance of the microwave switch according to the transmission characteristics of the microwave switch in different states to obtain performance evaluation results; and optimize the design of the microwave switch through the performance evaluation results to improve the performance indicators of the microwave switch without common channel.

[0112] It should be noted that the system is a system corresponding to the above method, and all implementation methods in the above method embodiment are applicable to this embodiment and can achieve the same technical effect.

[0113] The embodiment of the present invention further provides a computing device, comprising: a processor, a memory storing a computer program, wherein when the computer program is executed by the processor, the method described above is executed. All implementations in the above method embodiment are applicable to this embodiment and can achieve the same technical effect.

[0114] The embodiment of the present invention also provides a computer-readable storage medium storing instructions, which, when executed on a computer, enable the computer to execute the method described above. All implementations in the above method embodiment are applicable to this embodiment and can achieve the same technical effect.

[0115] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0116] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0117] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0118] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0119] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0120] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical disks.

[0121] In addition, it should be noted that in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it is understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using basic programming skills after reading the description of the present invention.

[0122] Therefore, the purpose of the present invention can also be achieved by running a program or a group of programs on any computing device. The computing device can be a well-known general device. Therefore, the purpose of the present invention can also be achieved by simply providing a program product containing a program code that implements the method or device. That is to say, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any well-known storage medium or any storage medium developed in the future. It should also be pointed out that in the device and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. In addition, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order. Some steps can be performed in parallel or independently of each other.

[0123] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for analyzing the performance of a microwave switch without a common channel, characterized in that: N ports are arranged around the microwave switch, and these ports can be interconnected in pairs. The central conductor sheet can realize signal switching from any port to another port. The microwave switch adopts a support structure, which uses non-metallic low dielectric constant materials as support parts. One end is fixed on the switch cavity wall, and the other end of the support part supports the central conductor sheet. A first slot is designed on the central conductor sheet, and the method comprises: Determine the equivalent circuit model of the microwave switch; Based on the equivalent circuit model, the electrical characteristics and behaviors of the microwave switch in the circuit are obtained; According to the electrical characteristics and behaviors, the scattering parameters of the microwave switch under the control signal are measured to obtain the performance indicators of the microwave switch; Through the performance index, the transmission characteristics of the microwave switch are analyzed to obtain the transmission characteristics of the microwave switch in different states; According to the transmission characteristics of the microwave switch in different states, the power handling capability, switching speed and linearity performance of the microwave switch are evaluated to obtain the performance evaluation results.

2. The method for analyzing performance of a microwave switch without a common channel according to claim 1, characterized in that: Based on the electrical characteristics and behavior, the scattering parameters of the microwave switch under the control signal are measured to obtain the performance indicators of the microwave switch, including: Measuring parameters of microwave devices in a specific frequency range by using an analyzer based on electrical characteristics and behavior; During the measurement process, a control signal is applied to the microwave switch to obtain the change of the scattering parameters of the microwave switch in different states; By changing the scattering parameters, the insertion loss, return loss and isolation of the microwave switch in the on state are calculated; The performance indicators of microwave switches can be obtained based on insertion loss, return loss and isolation.

3. The method for analyzing performance of a microwave switch without a common channel according to claim 2, characterized in that: The insertion loss is calculated as: ； in, Indicates insertion loss; It represents characteristic impedance; represents the microwave switch input impedance; Indicates the frequency of the signal.

4. The method for analyzing performance of a microwave switch without a common channel according to claim 3, characterized in that: The formula for calculating return loss is: ； in, Indicates return loss; represents the reflection coefficient; represents the propagation constant; Indicates the length of the transmission line; Represents the base of natural logarithms.

5. The method for analyzing performance of a microwave switch without a common channel according to claim 4, characterized in that: The calculation formula for isolation is: ； in, Indicates the degree of isolation; represents the scattering parameter; Indicates the microwave switch disconnected state; represents the reflection coefficient at the source end; Represents the reflection coefficient at the load end; represents the attenuation constant; Indicates the effective distance of signal propagation.

6. The method for analyzing performance of a microwave switch without a common channel according to claim 5, characterized in that: The transmission characteristics of the microwave switch are analyzed through performance indicators to obtain the transmission characteristics of the microwave switch in different states, including: Obtain scattering parameters through performance indicators; According to the scattering parameters, the amplitude ratio of the scattering parameters in the on state and the off state is calculated; According to the amplitude ratio of the scattering parameters, the signal passing ability of the microwave switch when it is turned on and the signal blocking ability when it is turned off can be obtained; Calculate the phase difference of the scattering parameters of the microwave switch in the on and off states, and determine the impact of the switch state switching on the signal phase; According to the amplitude ratio and phase difference, the transmission characteristics of the microwave switch in different states can be obtained.

7. The method for analyzing performance of a microwave switch without a common channel according to claim 6, characterized in that: The amplitude ratio calculation formula of the scattering parameters is: ； in, represents the amplitude ratio of the scattering parameters; Indicates the conduction state of the microwave switch; Indicates frequency; Indicates temperature; Indicates voltage.

8. A non-common channel microwave switch performance analysis system, characterized in that: N ports are arranged around the microwave switch, and these ports can be interconnected in pairs. The central conductor sheet can realize signal switching from any port to another port. The microwave switch adopts a support structure, which uses non-metallic low dielectric constant materials as support parts. One end is fixed on the switch cavity wall, and the other end of the support part supports the central conductor sheet. The center conductor sheet is designed with a first slot, including: An acquisition module is used to determine an equivalent circuit model of the microwave switch; based on the equivalent circuit model, the electrical characteristics and behavior of the microwave switch in the circuit are obtained; based on the electrical characteristics and behavior, the scattering parameters of the microwave switch under the control signal are measured to obtain the performance index of the microwave switch; The processing module is used to analyze the transmission characteristics of the microwave switch through performance indicators to obtain the transmission characteristics of the microwave switch in different states; based on the transmission characteristics of the microwave switch in different states, the power handling capacity, switching speed and linearity performance of the microwave switch are evaluated to obtain performance evaluation results; and based on the performance evaluation results, the microwave switch is optimized to improve the performance indicators of the microwave switch without common channel.

9. A computing device, characterized in that include: one or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the method as claimed in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program, which, when executed by a processor, implements the method according to any one of claims 1 to 7.

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