A method and apparatus for designing a digital prototype of a radio frequency system

Abstract

The method comprises the following steps: constructing a plurality of radio frequency system component simulation models in a simulation space; performing first simulation tests on each antenna component simulation model and each radio frequency front-end component simulation model, and obtaining corresponding performance parameters to construct a simulation model library; selecting radio frequency system component simulation models from the simulation model library according to a target performance of the radio frequency system, combining the radio frequency system component simulation models in the simulation space through a system tool structure model, and performing signal transmission through an interconnection structure component simulation model to obtain a radio frequency system simulation model; performing a second simulation test on the radio frequency system simulation model, and adjusting the radio frequency system simulation model according to a simulation result to obtain a design scheme of the radio frequency system. The radio frequency system design method provided by the present disclosure can be used for collaborative analysis of system comprehensive performance, can shorten a design cycle by using a simulation analysis method, can establish a simulation model library, and can simplify a subsequent design process.

Description

Technical Field

[0001] This disclosure relates to the field of radio frequency microsystems technology, and in particular to a method and apparatus for designing a digital prototype of a radio frequency system. Background Technology

[0002] Radio frequency (RF) microsystems (MSS) are systems formed by integrating functional modules such as antennas, transceivers, frequency converters, and digital-to-analog converters at the micro-nano scale through heterogeneous integration and packaging. They enable high-performance electronic systems while allowing for the miniaturization of electronic products. RF MSSs have wide applications in communications, radar, the Internet of Things (IoT), 5G / 6G, automotive electronics, and biomedicine.

[0003] In traditional RF microsystem design and development, the RF front-end and antenna system are typically designed, developed, and fabricated separately, then integrated into a single package using integrated circuit technology. Because each component is designed independently, it is difficult to ensure the overall system performance, leading to issues such as performance mismatch during system integration testing. Furthermore, the prediction of overall system performance is highly dependent on the manufacturing and testing of physical prototypes, resulting in extended development cycles, increased costs, and introduced stability risks. Therefore, it is urgent to address the problems of insufficient collaborative design and over-reliance on physical verification in RF microsystems. Summary of the Invention

[0004] This disclosure provides a digital prototype design method and apparatus for radio frequency systems, which addresses the problems of insufficient collaborative design and over-reliance on physical verification in radio frequency microsystems.

[0005] In view of the above problems, in a first aspect, the present disclosure provides a method for designing a digital prototype of a radio frequency system, comprising: Multiple RF system component simulation models are constructed in the simulation space; wherein, the RF system component simulation models include: antenna component simulation models and RF front-end component simulation models; The simulation models of each antenna component and each RF front-end component were subjected to the first simulation test, and the corresponding performance parameters were obtained to build a simulation model library. Based on the target performance of the RF system, RF system component simulation models are selected from the simulation model library, combined in the simulation space through system tooling structure models, and signal transmission is performed through interconnection structure component simulation models to obtain the RF system simulation model. A second simulation test is performed on the RF system simulation model. Based on the simulation test results, the RF system simulation model is adjusted to obtain the RF system design scheme.

[0006] In conjunction with the first aspect, in one possible implementation, multiple antenna component simulation models are constructed in the simulation space, including: Based on the antenna type and structural parameters of the antenna components, multiple different structural models of the antenna components are constructed in the first simulation space. For each antenna component's structural model, a first simulation parameter is set, and a first region of the antenna component's structural model is determined as a first connection region, resulting in multiple antenna component simulation models; wherein, the first connection region is the connection structure with the interconnect structure component simulation model; the first simulation parameter includes at least one of the following: antenna substrate material parameters and feed structure parameters.

[0007] In conjunction with the first aspect, in one possible implementation, multiple RF front-end component simulation models are constructed in the simulation space, including: Based on the target function of the RF front-end components, structural models of multiple RF front-end components are established in the second simulation space. The structural model of the RF front-end component is obtained by combining the RF element model and the RF front-end circuit transmission model. The RF element model is established according to the RF elements that realize the target function of the RF front-end component. The RF front-end circuit transmission model is established according to the preset connection rules between the RF elements and is used to simulate the signal transmission between the RF elements. Each RF component model is configured as a corresponding equivalent model, and the second simulation parameters of the RF front-end circuit transmission model are adjusted. The equivalent model for the RF component model is configured as at least one of the following: behavioral model, compact model, macro model, and black box model. The second simulation parameters of the RF front-end circuit transmission model include at least one of the following: front-end circuit transmission structure parameters, front-end circuit transmission material parameters, and front-end circuit substrate performance parameters. For each RF front-end component's structural model, the second region of the structural model of the RF front-end component is determined as the second connection region, resulting in multiple RF front-end component simulation models; wherein, the second connection region is the connection structure with the interconnect structure component simulation model.

[0008] In conjunction with the first aspect, in one possible implementation, the step of performing a first simulation test on each antenna component simulation model and each RF front-end component simulation model, obtaining corresponding performance parameters, and constructing a simulation model library includes: For each antenna component simulation model, a first simulation test is performed on the antenna component simulation model to obtain the first performance parameters of the corresponding antenna component simulation model; wherein, the first performance parameters include at least one of the following: antenna operating frequency, antenna VSWR, antenna gain, field pattern, scanning range, beamwidth and polarization mode; For each RF front-end component simulation model, a first simulation test is performed on the RF front-end component simulation model to obtain the second performance parameters of the corresponding RF front-end component simulation model; wherein, the second performance parameters include at least one of the following: RF front-end link gain, RF front-end transmit power, RF front-end receive noise, RF front-end operating frequency range, and RF front-end bandwidth; The correspondence between the simulation model of each RF front-end component and the simulation model of each antenna component and the performance parameters is determined respectively, and a simulation model library is constructed based on the correspondence.

[0009] In conjunction with the first aspect, in one possible implementation, the step of selecting RF system component simulation models from a simulation model library based on the target performance of the RF system, combining them in the simulation space using system tooling structure models, and transmitting signals through interconnection structure component simulation models to obtain an RF system simulation model includes: Select the antenna component simulation model and the RF front-end component simulation model that correspond to the target performance from the simulation model library; In the third simulation space, the antenna component simulation model and the radio frequency front-end component simulation model are combined in a preset position using a system tooling structure model; and The simulation model of the radio frequency system is obtained by connecting the simulation model of the interconnect structure component with the simulation model of the antenna component and the simulation model of the radio frequency front-end component respectively.

[0010] In conjunction with the first aspect, in one possible implementation, the step of performing a second simulation test on the RF system simulation model, and adjusting the RF system simulation model based on the simulation test results to obtain the RF system design scheme includes: A second simulation test was performed on the aforementioned RF system simulation model to obtain the transmission performance test results and the reception performance test results, respectively. The transmission performance test results and the reception performance test results are compared with the target performance. Based on the comparison results, the RF system simulation model is adjusted until the transmission performance test results and reception performance test results of the adjusted RF system simulation model reach the target performance. The adjusted RF system simulation model is then determined as the design scheme of the RF system.

[0011] In conjunction with the first aspect, in one possible implementation, the second simulation test performed on the radio frequency system simulation model to obtain the transmission performance test results includes: The excitation signal is input from the first end of the RF front-end component simulation model into the RF system simulation model, and a first output signal is obtained through simulation. The transmission performance parameters of the RF front-end component are determined based on the first output signal. The transmission performance parameters of the RF front-end component include at least one of the following: front-end transmission operating frequency, transmission link S-parameters, transmission link frequency response, transmission link power, transmission phase, and transmission link dynamic range. The first output signal is input into the antenna component simulation model to obtain a first simulated electromagnetic wave, and the transmission performance parameters of the antenna component are determined based on the first simulated electromagnetic wave; wherein, the first simulated electromagnetic wave output by the antenna component simulation model is obtained by the antenna component simulation model based on the first output signal; the transmission performance parameters of the antenna component include at least one of the following: antenna transmission operating frequency, system transmission field pattern, system transmission scanning range, system transmission gain, and radiated power; Based on the transmission performance parameters of the RF front-end component and the antenna component, the transmission performance test results of the RF system simulation model are determined.

[0012] In conjunction with the first aspect, in one possible implementation, the second simulation test performed on the RF system simulation model to obtain the reception performance test results includes: The antenna assembly simulation model receives a second simulated electromagnetic wave in the simulation space to obtain a simulated feed signal, and determines the receiving performance parameters of the antenna assembly based on the simulated feed signal; wherein, the receiving performance parameters of the antenna assembly include at least one of the following: antenna receiving operating frequency, receiving field pattern, receiving power, receiving phase, and receiving gain; The simulated power supply signal is input from the second end of the RF front-end component simulation model to the RF front-end component simulation model to obtain the first input signal through simulation. The simulated output signal parameters are obtained by power combining the first input signal, and the receiving performance parameters of the radio frequency front-end component are determined based on the simulated output signal parameters; wherein the receiving performance parameters of the radio frequency front-end component include at least one of the following: front-end receiving operating frequency, system receiving S-parameters, system receiving signal combined power, system receiving noise figure, receiving frequency response, and system receiving dynamic range; Based on the receiving performance parameters of the antenna assembly and the receiving performance parameters of the RF front-end assembly, the receiving performance test results of the RF system simulation model are determined.

[0013] In conjunction with the first aspect, in one possible implementation, the simulation model of the interconnect structure component is determined using the following method: Based on the connection structure of the RF system component simulation model, an interconnect structure component structural model is established; wherein, the interconnect structure component structural model is used to characterize the connection relationship between the RF system component simulation models; Configure third simulation parameters for the interconnect structure component model to obtain an interconnect structure component simulation model; wherein, the interconnect structure component simulation model is used to establish signal transmission relationships in the radio frequency system component simulation model; the third simulation parameters include at least one of the following: interconnect structure parameters, interconnect structure material parameters, and interconnect structure substrate performance parameters.

[0014] A second aspect of this disclosure provides a digital prototype design apparatus for a radio frequency system, comprising: The building module is used to build simulation models of multiple radio frequency system components in the simulation space. The parameter acquisition model is used to perform the first simulation test on each antenna component simulation model and each RF front-end component simulation model, and to obtain the corresponding performance parameters to build a simulation model library. The combination module is used to select RF system component simulation models from the simulation model library according to the target performance of the RF system, combine them in the simulation space through the system tooling structure model, and transmit signals through the interconnect structure component simulation model to obtain the RF system simulation model. The simulation module is used to perform a second simulation test on the RF system simulation model, and adjust the RF system simulation model according to the simulation test results to obtain the design scheme of the RF system.

[0015] The beneficial effects of the embodiments disclosed herein include: This disclosure provides a digital prototype design method and apparatus for a radio frequency (RF) system, comprising: constructing multiple RF system component simulation models in a simulation space; wherein the RF system component simulation models include: antenna component simulation models and RF front-end component simulation models; performing a first simulation test on each antenna component simulation model and each RF front-end component simulation model, obtaining corresponding performance parameters, and constructing a simulation model library; selecting RF system component simulation models from the simulation model library according to the target performance of the RF system, combining them in the simulation space through a system tooling structure model, and transmitting signals through an interconnect structure component simulation model to obtain an RF system simulation model; performing a second simulation test on the RF system simulation model, adjusting the RF system simulation model according to the simulation test results, and obtaining a design scheme for the RF system. The RF system design method provided by this disclosure can integrate each component in the RF system into a whole for collaborative analysis of the overall system performance. Furthermore, the use of simulation analysis reduces reliance on physical experiments, shortens the design cycle, and provides a simulation model library. By establishing the simulation model library, the RF system component simulation models in the library can be used as a benchmark for subsequent design, simplifying the subsequent design process. Attached Figure Description

[0016] Figure 1 This is a schematic flowchart of a digital prototype design method for a radio frequency system provided in an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the antenna assembly structure provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of a radio frequency system simulation model provided in the embodiments of this disclosure; Figure 4 A schematic diagram of the structure of a digital prototype design device for a radio frequency system provided in an embodiment of this disclosure. Detailed Implementation

[0017] This disclosure provides a method and apparatus for designing a digital prototype of a radio frequency system. Preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this disclosure. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.

[0018] This disclosure provides a method for designing a digital prototype of a radio frequency system, such as... Figure 1 As shown, it includes: S101. Construct simulation models of multiple radio frequency system components in the simulation space; The radio frequency system component simulation model includes: an antenna component simulation model and a radio frequency front-end component simulation model; S102. Perform the first simulation test on each antenna component simulation model and each RF front-end component simulation model respectively, obtain the corresponding performance parameters, and build a simulation model library; S103. Based on the target performance of the RF system, select RF system component simulation models from the simulation model library, combine them in the simulation space through the system tooling structure model, and transmit signals through the interconnection structure component simulation model to obtain the RF system simulation model. S104. Perform a second simulation test on the RF system simulation model, and adjust the RF system simulation model according to the simulation test results to obtain the RF system design scheme.

[0019] In this embodiment of the disclosure, the radio frequency (RF) system can be a miniaturized and integrated RF microsystem obtained by highly integrating RF system components into a micro-package using microsystem technology. This RF system may include RF system components such as antenna components, RF front-end components, interconnect structure components, and system tooling structures.

[0020] In this disclosure, the digital prototype can be implemented as a radio frequency (RF) system simulation model. A digital prototype is a digital simulation model of the entire RF system. Its core idea is to represent each component of the RF system in the form of a simulation model and encapsulate it as a whole, enabling it to reflect the performance of the RF system in the physical domain. Thus, the product characteristics of the RF system can be simulated, evaluated, predicted, and optimized through the digital prototype, completing the RF system design.

[0021] Antenna components have both receiving and transmitting functions. In transmitting mode, they convert radio frequency (RF) signals from the RF front-end components into radio waves that can propagate in space. In receiving mode, the antenna component captures radio waves propagating in space, converts them back into RF signals, and transmits them to the RF front-end components for further processing. In an RF system, the antenna component can achieve bidirectional conversion between electrical signals (i.e., the aforementioned RF signals) and electromagnetic waves (i.e., the aforementioned radio waves). The antenna's structural design is determined based on the target frequency range required for the RF system's operation. Different antenna structures determine the frequency, direction, and intensity distribution of radio waves propagating in space, directly impacting parameters such as the coverage area, anti-interference capability, and signal-to-noise ratio of the RF system's transmitted signals.

[0022] Radio frequency (RF) front-end components perform necessary amplification, phase shifting, frequency conversion, and filtering on RF signals that are about to be transmitted or have just been received. In the signal transmission link, the RF front-end component converts the input low-frequency raw signal into a high-frequency RF signal that can be transmitted through the antenna assembly, while simultaneously performing signal modulation, filtering, phase shifting, and power amplification. During this process, the RF front-end component can adjust the phase and amplitude of the carrier signal based on the phase and amplitude of the raw signal, loading the raw signal onto the intermediate frequency (IF) carrier signal through phase shifting and amplitude modulation; it then up-converts the carrier signal from the IF frequency to a higher RF signal frequency suitable for antenna transmission through a mixer; finally, by providing a higher power level to the carrier signal, the antenna assembly can more effectively transmit the RF frequency carrier signal as electromagnetic waves.

[0023] In the signal reception link, after the antenna assembly receives the external electromagnetic wave signal, it converts it into a radio frequency (RF) signal that can be input to the RF front-end assembly. The filters within the RF front-end assembly can filter out various noises contained in the signal according to a preset frequency range. The filtered signal can then be input to the mixer of the RF front-end assembly. By mixing the received high-frequency signal with a specific frequency signal generated by a local oscillator, the high-frequency signal is shifted to a lower baseband or intermediate frequency as needed by the system. The phase shifter of the RF front-end assembly then adjusts the phase of the signal to meet the requirements for signal phase synchronization or specific phase relationships. Furthermore, the signal that has undergone the above filtering, mixing, and phase shifting operations can be power-combined. The power combiner within the RF front-end assembly can combine and superimpose the signals to form a higher-power signal, increasing the output power to better drive subsequent components or meet signal transmission requirements, ultimately completing the entire signal reception process.

[0024] Interconnection structure components are the connection channels between antenna components and RF front-end components. Through interconnection structure components, antenna components and RF front-end components can be functionally integrated into a whole. Specifically, interconnection structure components can serve as signal transmission channels, transmitting signals between the two components.

[0025] The system tooling structure can be a structure that provides mechanical support and protection for the aforementioned components, such as positioning, fixing, and support (e.g., package, substrate structure, housing, and mounting bracket). In an RF system, the system tooling structure itself does not directly implement circuit functions, but its specific geometry and material properties significantly affect the RF performance of the entire RF system through electromagnetic effects (e.g., shielding, parasitic parameters, cavity resonance, and losses). In this disclosure, a corresponding simulation model can be constructed based on the geometry and material properties of the system tooling structure to simulate its impact on electromagnetic wave distribution, signal transmission, and overall system performance (e.g., S-parameters, radiation characteristics, and isolation). In practical applications, different process design kits (PDKs) can be set in the simulation space. These kits define the process rules for the system tooling structure (e.g., linewidth, hole positions, material properties). By applying different kits to the system tooling structure simulation model, the simulation model can ensure both realistic performance and the manufacturability of the RF system product.

[0026] A simulation space can be an integrated space containing multiple simulators used to build models of electronic circuits, electromagnetic structures, or communication systems. Within the simulation space, mathematical models and computational methods can be used to simulate signal propagation behavior, and based on this behavior, the performance of circuits, components, or the entire system can be predicted and analyzed.

[0027] In this disclosure, multiple different simulation models can be established in a simulation space for different RF system components. Based on these simulation models, corresponding parameters are set for each component to simulate its operating state in actual applications. A first simulation test is performed on each component in the simulation space to determine its performance parameters. Through this first simulation test, the performance parameters corresponding to each RF system component can be obtained. The established RF system component simulation models and the obtained performance parameters are mapped one-to-one to construct a simulation model library.

[0028] Based on the target performance of the desired RF system, simulation models of antenna components and RF front-end components with performance parameters within the target performance range can be selected from the simulation model library. These selected models can then be simulated in the simulation space. By combining the interconnect structure component simulation model and the system tooling structure model into a structurally and functionally interconnected whole, the RF system simulation model is obtained. This allows for the simulation of the impact of different component combinations on the RF system performance in real-world applications, thus providing a more accurate simulation of the actual performance of the RF system.

[0029] In the simulation space, transmit and receive links are built separately for the RF system simulation model. A second simulation test is then conducted to determine the signal transmission and reception performance of the RF system. This second simulation test is performed to determine the overall performance of the RF system. The second simulation test can employ field-circuit co-simulation. By performing circuit simulation on the circuit system in the RF system simulation model and field simulation on the electromagnetic wave transmission and reception process in the RF system simulation model, the actual dynamic characteristics of the RF system can be more accurately reflected. The simulated signals and simulated electromagnetic waves obtained from the field-circuit co-simulation can be used to analyze the transmission and reception performance of the RF system.

[0030] Furthermore, the RF system simulation model can be adjusted based on the comparison between the target performance and the receiving and transmitting performance until the receiving and transmitting performance meet the target performance requirements. The current RF system simulation model can then be determined as the design scheme for the corresponding RF system.

[0031] The method provided in this disclosure allows for the comprehensive analysis of the overall system performance by integrating each component in the RF system as a whole. Furthermore, the use of simulation analysis reduces reliance on physical experiments and shortens the design cycle. In addition, this disclosure provides a simulation model library. By establishing the simulation model library, the simulation models of the RF system components in the library can be used as the benchmark for subsequent designs, simplifying the subsequent design process.

[0032] In yet another embodiment provided in this disclosure, the step S101 above, "constructing multiple antenna component simulation models in the simulation space," can be implemented as follows: Step 1: Based on the antenna type and structural parameters of the antenna components, construct multiple different structural models of the antenna components in the first simulation space; Step 2: For each antenna component's structural model, set the first simulation parameters and determine the first region of the antenna component's structural model as the first connection region to obtain multiple antenna component simulation models; wherein, the first connection region is the connection structure with the interconnect structure component simulation model; the first simulation parameters include at least one of the following: antenna substrate material parameters and feed structure parameters.

[0033] In this disclosure, such as Figure 2As shown, the antenna assembly may include a feed network and multiple radiating elements. During signal transmission, the feed network can transmit signals with the RF front-end assembly, distributing the RF signal to different radiating elements. The radiating elements convert the RF signal into radio waves and output them into space. During signal reception, the radiating elements can capture radio waves in space, induce RF signals based on the captured radio waves, and transmit them to the feed network. The feed network can output RF signals from multiple radiating elements to the RF front-end assembly.

[0034] In this embodiment of the disclosure, the construction of the antenna component simulation model can begin by determining the type of antenna component, such as a patch antenna or a magnetoelectric dipole antenna. Then, antenna component structural models with different specifications and constraints can be established for different types of antennas. These specifications and constraints can include parameters such as operating frequency, scanning range, gain, polarization, size limitations, and the integration process of the RF system. Based on these specifications and constraints, a corresponding antenna component structural model can be established in the first simulation space. The parts of the antenna component that require specific modeling can include the specific geometry of the radiating elements, the size of the radiating elements, the array arrangement of the radiating elements, and the feeding method and transmission structure of the feeding network—parts whose specific morphology and structure can affect the performance of the antenna component.

[0035] Furthermore, specific first simulation parameters can be set for the structural model of the antenna assembly. These first simulation parameters may include antenna substrate material parameters and feed structure parameters. The antenna substrate material parameters can be defined by specifying parameters such as the dielectric constant and dielectric loss of the substrate in the antenna assembly (e.g., the dielectric constant of the substrate material of the radiating element of the antenna assembly), simulating the material properties of the substrate in the antenna assembly, thereby replicating the impact of the substrate material on the signal transmission performance of the antenna assembly. The feed structure parameters can be defined by specifying the circuit structure and related parameters in the feed network (e.g., the impedance of the leads in the feed network), simulating the impact of the actual feed network on the signal of the antenna assembly. The definition of these parameters collectively determines the performance of the antenna assembly, and the final performance of the antenna assembly can be determined based on these parameters during the simulation process.

[0036] The first region can be one end of the antenna assembly where the feed network communicates with the radio frequency front-end assembly. Within this region, a first connection region connected to the interconnect structure assembly can be set. A corresponding connection structure (e.g., microstrip line, coplanar waveguide, spherical bonding, or through-silicon via) can be set in this region as a connection structure to the simulation model of the interconnect structure assembly, thereby completing the modeling of the antenna assembly simulation model.

[0037] In yet another embodiment provided in this disclosure, the above step S101, "constructing multiple RF front-end component simulation models in the simulation space," can be implemented as follows: Step 1: Based on the target function of the RF front-end components, establish structural models of multiple RF front-end components in the second simulation space. The structural model of each RF front-end component is obtained by combining RF element models and RF front-end circuit transmission models. The RF element models are established based on RF elements that realize the target function of the RF front-end components. The RF front-end circuit transmission models are established according to preset connection rules between RF elements and are used to simulate signal transmission between each RF element. Step 2: Configure each RF component model as its corresponding equivalent model and adjust the second simulation parameters of the RF front-end circuit transmission model. The equivalent model for the RF component model should be configured as at least one of the following: behavioral model, compact model, macro model, and black box model. The second simulation parameters of the RF front-end circuit transmission model should include at least one of the following: front-end circuit transmission structure parameters, front-end circuit transmission material parameters, and front-end circuit substrate performance parameters. Step 3: For each RF front-end component's structural model, determine the second region of the structural model of the RF front-end component as the second connection region, thereby obtaining multiple RF front-end component simulation models; wherein, the second connection region is the connection structure with the interconnect structure component simulation model.

[0038] In this embodiment, the radio frequency (RF) components can be active or passive devices that implement signal processing functions in the RF front-end assembly. In practical applications, RF components capable of performing corresponding functions can be selected based on the target functional requirements of the RF front-end assembly, such as filtering, power amplification, attenuation, phase shifting, and frequency conversion. For example, a corresponding filter can be selected for the RF front-end assembly for filtering; a power amplifier can be specifically selected for power amplification; and a corresponding frequency conversion chip can be selected based on the target frequency and frequency conversion function of the RF system. It should be noted that the above functions can be performed by different RF components, or multiple signal processing functions can be integrated by a single RF component.

[0039] After determining the radio frequency (RF) components included in the RF front-end assembly, wiring connections can be made between these RF components according to preset connection rules to obtain the RF front-end circuit. The RF front-end circuit can be a combination of passive interconnect structures (such as transmission lines between different RF components) and supporting and fixing structures within the RF front-end assembly. Furthermore, different RF components and the RF front-end circuit can be modeled separately to obtain RF component models and RF front-end circuit transmission models, respectively.

[0040] In the second simulation space, the RF component model and the RF front-end circuit transmission model are combined, and each RF component simulation model and RF front-end circuit transmission model is configured separately. For the RF component model, each RF component can be configured as a corresponding equivalent model. Alternatively, all RF components in the RF front-end component simulation model can be configured as the same type of equivalent model; or, based on the specific characteristics of the RF component and its specific impact on the output signal in the RF front-end component, different types of equivalent models can be configured for different RF components. For example, RF components with a small impact on the output signal can be specifically configured as behavioral models or black-box models; components with a large impact on the output signal, or those requiring higher simulation fidelity, can be configured as compact models or macro models according to the required simulation level.

[0041] For the RF front-end circuit transmission model, corresponding second simulation parameters can be configured. These second simulation parameters can include: front-end circuit transmission structure parameters, front-end circuit transmission material parameters, and front-end circuit substrate performance parameters. Specifically, the front-end circuit transmission structure parameters can define the specific routing rules of the transmission lines in the front-end circuit, specifying the linewidth, spacing, and routing path. The front-end circuit transmission material parameters define the material of the transmission lines in the RF front-end circuit. The front-end circuit substrate performance parameters define the material of the substrate in the RF front-end circuit. The second region can be one end of the RF front-end assembly that communicates with the antenna assembly. This region can contain a second connection area connected to the interconnect structure assembly, and corresponding connection structures can be set within this second connection area as connection structures to the simulation model of the interconnect structure assembly, thereby completing the modeling of the RF front-end assembly simulation model.

[0042] In another embodiment provided in this disclosure, the step S102 above, "perform a first simulation test on each antenna component simulation model and each RF front-end component simulation model respectively, obtain the corresponding performance parameters, and construct a simulation model library", can be implemented as follows: Step 1: For each antenna component simulation model, perform a first simulation test on the antenna component simulation model to obtain the first performance parameters of the corresponding antenna component simulation model; wherein, the first performance parameters include at least one of the following: antenna operating frequency, antenna VSWR, antenna gain, field pattern, scanning range, beamwidth, and polarization mode; Step 2: For the second simulation function corresponding to each RF front-end component simulation model, perform a first simulation test on the RF front-end component simulation model to obtain the second performance parameters of the corresponding RF front-end component simulation model; wherein, the second performance parameters include at least one of the following: RF front-end link gain, RF front-end transmit power, RF front-end receive noise, RF front-end operating frequency range, and RF front-end bandwidth; Step 3: Determine the correspondence between the simulation model of each RF front-end component and the simulation model of each antenna component and the performance parameters, and construct a simulation model library based on the correspondence.

[0043] In this embodiment of the disclosure, for different types of radio frequency system components, corresponding simulation tests can be performed for different simulation functions to obtain the performance parameters for that type of radio frequency system component.

[0044] The first simulation function of the antenna assembly simulation model can include the receiving and transmitting functions of the antenna assembly. For the transmitting function in the first simulation function, port excitation can be applied to the first connection area of ​​the antenna assembly simulation model. The set excitation signal is input into the feed network and drives the antenna radiating element. The radiation field distribution is calculated through full-wave electromagnetic simulation, and parameters such as antenna operating frequency, antenna VSWR, antenna gain, field pattern, scanning range, polarization mode, radiated power and return loss of the antenna assembly are extracted.

[0045] For the receiving function in the first simulation function, incident electromagnetic wave excitation can be set in the simulation space to simulate an electromagnetic wave illumination scenario. The electromagnetic field energy is received by the radiating element of the antenna assembly simulation model, transmitted to the first connection area via the feed network, and then the port response signal is extracted. Based on the feed signal, parameters such as the antenna receiving sensitivity, antenna receiving directivity, and antenna receiving power of the antenna assembly can be determined. The second simulation function of the RF front-end component simulation model can include the RF front-end component's input signal processing function. A pre-defined RF signal is input into the RF front-end component simulation model. After simulation processing, parameters such as the RF front-end link gain, RF front-end transmit power, RF front-end receive noise, RF front-end operating frequency, and RF front-end bandwidth can be determined based on the output signal. For example, the gain and power of the RF front-end component can be determined by comparing the input and output signals; the frequency and noise power of the output signal can be obtained by sweeping the signal frequency, and the operating frequency and receive noise of the RF front-end component can be determined respectively; by adjusting the frequency of the input signal and based on the scattering (S, Scattering) parameter of the output signal, the bandwidth of the RF front-end component can be determined.

[0046] By mapping different RF system components and performance parameters, a simulation model library containing simulation models of RF system components and their corresponding performance parameters can be obtained.

[0047] In another embodiment provided in this disclosure, the step S103 above, "based on the target performance of the RF system, selecting RF system component simulation models from the simulation model library, combining them in the simulation space through system tooling structure models, and transmitting signals through interconnection structure component simulation models to obtain an RF system simulation model," can be implemented as follows: Step 1: Select the antenna component simulation model and the RF front-end component simulation model corresponding to the target performance from the simulation model library; Step 2: In the third simulation space, combine the antenna component simulation model and the RF front-end component simulation model at a preset position using the system tooling structure model; and Step 3: Connect the interconnect structure component simulation model with the antenna component simulation model and the RF front-end component simulation model respectively to obtain the RF system simulation model.

[0048] In this embodiment of the disclosure, the target performance may include the target operating scenario, operating frequency and integration process requirements of the RF system, or it may include specific performance indicators such as the gain, signal-to-noise ratio and S-parameters of the RF system.

[0049] Based on the target performance, appropriate RF system component simulation models can be selected from the pre-built simulation model library. For example, for RF systems operating in lower frequency environments and requiring lower costs, antenna component simulation models with substrates such as printed circuit boards (PCBs) or epoxy resin boards can be selected; for RF systems operating in higher frequency environments and requiring high temperature and aging resistance, antenna component simulation models with substrates of low temperature co-fired ceramics (LTCCs) can be selected; for RF systems applied to small satellite navigation terminals or Bluetooth modules, antenna component simulation models with microstrip patch antennas can be used; and for RF systems applied to automotive millimeter-wave radars, antenna component simulation models with slotted antennas can be used.

[0050] Similarly, for RF front-end component simulation models, the appropriate simulation model can be selected from the simulation model library based on the target function. Furthermore, RF system component simulation models whose performance parameters fall within the target performance requirement range can be selected.

[0051] After selecting the simulation models for the RF system components, the antenna component simulation model, the RF front-end component simulation model, and the interconnect structure component simulation model are respectively carried by the system tooling structure model in the third simulation space. The antenna component simulation model and the interconnect structure component simulation model are connected by simulation in the first connection area, and the RF front-end component simulation model and the interconnect structure component simulation model are connected by simulation in the second connection area, so that the three are connected by simulation and the RF system simulation model is obtained.

[0052] In this embodiment of the disclosure, such as Figure 3As shown, components of the RF system can be assembled in the third simulation space. The system fixture structure serves as a platform for supporting and mounting these components. It defines the spatial relationships between components and controls their electrical connections, ensuring electrical connections are formed within the connection areas. In practical applications, depending on the specific integration process, the system fixture structure can be implemented using different technologies, such as Low Temperature Co-fired Ceramic (LTCC), High Density Interconnect (HDI), or Wafer Level Package (WLP). Each component is fixed in its designated position using pre-defined slots. Electrical connections between components are achieved through appropriate connection structures, and transmission lines can be configured to connect the RF system to other devices. In the simulation space, specific parameters of the system fixture structure components can be set to simulate their impact on the RF system in real-world applications. For example, different materials result in different dielectric constants, leading to varying coupling capacitances and thus affecting RF system performance.

[0053] In another embodiment provided in this disclosure, step S104 above, "performing a second simulation test on the RF system simulation model, adjusting the RF system simulation model based on the simulation test results, and obtaining the RF system design scheme," can be implemented as follows: Step 1: Perform a second simulation test on the RF system simulation model to obtain the transmission performance test results and the reception performance test results, respectively; Step 2: Compare the transmission performance test results and the reception performance test results with the target performance respectively. Based on the comparison results, adjust the RF system simulation model until the transmission performance test results and reception performance test results of the adjusted RF system simulation model reach the target performance. Then, determine the adjusted RF system simulation model as the design scheme of the RF system.

[0054] In this embodiment of the disclosure, the second simulation test can be a simulation test performed on the RF system simulation model. The test results obtained through the second simulation test can characterize the overall performance of the RF system. Furthermore, based on the obtained test results, the RF system simulation model can be adjusted accordingly so that the final determined RF system can meet the target performance.

[0055] For example, within the structural size constraints of the antenna assembly, its dimensions can be further adjusted. The higher the operating frequency of the RF system, the smaller the physical size of the antenna assembly can be; conversely, if the RF system aims for higher gain, the physical size of the antenna assembly should be increased accordingly. Similarly, if parameters such as signal-to-noise ratio or S-parameters do not meet the target performance, the material parameters in the RF system simulation model can be modified, such as dielectric constant, loss tangent, coefficient of thermal expansion, thermal conductivity, and surface roughness; and the wiring within the RF system simulation model can be adjusted until the simulation test results meet the target performance requirements. Based on the parameters of the RF system simulation model at this point, the final RF system design scheme is determined.

[0056] In another embodiment provided in this disclosure, step one above, "performing a second simulation test on the RF system simulation model to obtain transmission performance test results," can be implemented as follows: Step 1: The excitation signal is input from the first end of the RF front-end component simulation model into the RF system simulation model, and the simulation is performed to obtain the first output signal. The transmission performance parameters of the RF front-end component are determined based on the first output signal. The transmission performance parameters of the RF front-end component include at least one of the following: front-end transmission operating frequency, transmission link S-parameters, transmission link frequency response, transmission link power, transmission phase, and transmission link dynamic range. Step 2: Input the first output signal into the antenna component simulation model to obtain the first simulated electromagnetic wave, and determine the transmission performance parameters of the antenna component based on the first simulated electromagnetic wave; wherein, the first simulated electromagnetic wave output by the antenna component simulation model is obtained by the antenna component simulation model based on the first output signal; the transmission performance parameters of the antenna component include at least one of the following: antenna transmission operating frequency, system transmission field pattern, system transmission scanning range, system transmission gain, and radiated power; Step 3: Determine the transmission performance test results of the RF system simulation model based on the transmission performance parameters of the RF front-end component and the antenna component.

[0057] In this embodiment of the disclosure, the first end of the RF front-end component simulation model can serve as a port for signal transmission between the RF system and other devices. The RF system can receive signals sent by other devices that need to be output by the RF system through this port, and can also transmit the signals received by the RF system to other devices through this port.

[0058] In the simulation space, a corresponding transmission link can be built to test the signal transmission performance of the combined components into a radio frequency (RF) system. This transmission link can input an excitation signal with a certain amplitude, frequency, and phase into the RF system simulation model, which then converts this excitation signal into a first electromagnetic wave. During this process, the changes in the input and output signals of each component's simulation model can be obtained in the simulation space, and the transmission performance of the RF system can be analyzed based on these changes.

[0059] Specifically, a field-path simulation test can be performed on the transmit link of the RF system. A corresponding excitation signal is set at the first end of the RF front-end component simulation model, and the first output signal from the RF front-end component simulation model and the first simulated electromagnetic wave from the antenna component simulation model are obtained respectively. The first output signal is then output to the antenna component simulation model through the interconnect structure component simulation model, and the antenna component simulation model generates the corresponding first simulated electromagnetic wave based on the first output signal.

[0060] Based on the incident power of the input excitation signal and the power of the input first output signal, the transmit link power and transmit phase can be determined. Furthermore, the power transfer characteristics and reflection characteristics (i.e., transmit link S-parameters) between the input and output terminals of the RF front-end component can be obtained. Based on the input excitation signals of different frequencies and the corresponding gain of the first output signal, frequency response curves can be obtained to reflect the differences in amplification capability of the RF front-end component at different frequencies, thereby determining the frequency response of the transmit link. The transmit link dynamic range of the RF front-end component can be determined according to the correspondence between the excitation signal and the first output signal. Based on these parameters, the transmit performance parameters of the RF front-end component in the RF system can be determined, thereby evaluating the performance of the selected RF front-end component in the transmit link.

[0061] Based on the first simulated electromagnetic wave, data such as the system transmission field pattern, system transmission scanning range, system transmission gain, and radiated power of the electromagnetic wave output by the radio frequency (RF) system can be determined. The system transmission field pattern describes the distribution of electromagnetic wave radiation intensity in different directions in space, reflecting the directionality of the RF system's transmission performance. The system transmission gain is a core performance indicator reflecting the signal spatial coverage capability and energy conversion efficiency of the RF system. Radiated power describes the total power radiated into space by the RF system and measures the energy conversion efficiency during transmission; it can be characterized by Effective Isotropic Radiated Power (EIRP). These data can characterize the actual transmission capability of the antenna components in the RF system's transmission link, thereby determining the transmission performance parameters of the antenna components in the RF system.

[0062] In another embodiment provided in this disclosure, step one above, "performing a second simulation test on the RF system simulation model to obtain the reception performance test results," can be implemented as follows: Step 1: The antenna assembly simulation model receives the second simulated electromagnetic wave in the simulation space to obtain the simulated feed signal, and determines the receiving performance parameters of the antenna assembly based on the simulated feed signal; wherein, the receiving performance parameters of the antenna assembly include at least one of the following: antenna receiving operating frequency, receiving field pattern, receiving power, receiving phase, and receiving gain; Step 2: Input the simulated power supply signal from the second end of the RF front-end component simulation model into the RF front-end component simulation model, perform simulation to obtain the first input signal, and obtain the signal parameters of the first input signal; Step 3: Determine the receiving performance parameters of the RF front-end component based on the signal parameters of the first input signal; wherein, the receiving performance parameters of the RF front-end component include at least one of the following: front-end receiving operating frequency, system receiving S-parameters, system receiving signal synthesis power, system receiving noise figure, receiving frequency response, and system receiving dynamic range; Step 4: Determine the reception performance test results of the RF system simulation model based on the reception performance parameters of the antenna assembly and the RF front-end assembly.

[0063] In this embodiment, a corresponding receiving link can be built in the simulation space to detect the actual signal receiving performance of each component in the radio frequency system. A second simulated electromagnetic wave with a certain period, wavelength, and amplitude can be set in the simulation space. This electromagnetic wave is received by the radio frequency system simulation model, and after processing by the model, a first input signal is obtained. During this process, the changes in the input and output signals of each component's simulation model can be acquired in the simulation space, and the receiving performance of the radio frequency system can be analyzed based on these changes.

[0064] Specifically, by performing field-path joint simulation tests on the receiving link of the RF system, the receiving performance of the receiving link can be obtained. A second simulated electromagnetic wave is set in the simulation space. This second simulated electromagnetic wave is received by the antenna assembly simulation model. The electromagnetic wave is converted into an electrical signal by the radiating element of the antenna assembly, and output to the antenna assembly's feed network to obtain the simulated feed signal. Based on the receiving characteristics of the second simulated electromagnetic wave in different directions, the receiving field pattern of the antenna assembly in this receiving link can be obtained, and the receiving phase can be determined. Based on the power density of the incident second simulated electromagnetic wave and the power density of the output simulated feed signal, the receiving gain and receiving power can be determined.

[0065] The signal is output to the RF front-end component via the interconnect structure components. After processing by the RF front-end component, the first input signal is obtained. This first input signal can be a baseband signal, an intermediate frequency signal, or an RF signal, depending on the RF system.

[0066] In the simulation space, the S-parameters of the first input signal can be extracted as the system receiving S-parameters of the RF system to characterize the transmission characteristics of the RF system's receiving link. The synthesized power of the system received signal can characterize the power of the effective signal finally captured by the RF system, and can characterize the impairment and gain of the RF system's receiving link. The system receiving noise figure can be determined based on the ratio of the effective signal to the noise signal in the first input signal to measure the RF system's ability to introduce additional noise. The system receiving frequency response is a parameter used by the RF system to characterize the RF system's ability to receive signals of different frequencies during signal reception. The system receiving dynamic range can characterize the weakest and largest distortion-free electromagnetic wave signals that the RF system can receive, and can be determined based on the correspondence between the second simulated electromagnetic wave and the first input signal.

[0067] In yet another embodiment provided in this disclosure, the simulation model of the interconnect structure component is determined using the following method: Step 1: Based on the connection structure of the RF system component simulation model, establish an interconnect structure component structural model; wherein, the interconnect structure component structural model is used to characterize the connection relationship between the RF system component simulation models; Step 2: Configure the third simulation parameters for the interconnect structure component model to obtain the interconnect structure component simulation model; wherein, the interconnect structure component simulation model is used to establish the simulation communication relationship in the RF system component simulation model; the third simulation parameters include at least one of the following: interconnect structure parameters, interconnect structure material parameters, and interconnect structure substrate performance parameters.

[0068] In this embodiment, the interconnect structure serves as a structure for establishing signal communication between the radio frequency front-end component and the antenna component, with its two ends corresponding to the first connection region and the second connection region respectively in terms of signal transmission function. By modeling the transmission structure between the first connection region and the second connection region, a simulation model of the interconnect structure component can be obtained.

[0069] The second connection area of ​​the RF front-end component can be the output terminal of the final stage RF element in the signal processing link of the RF front-end component simulation model. This terminal can be connected to the first connection area of ​​the antenna component simulation model through the interconnect structure component simulation model to realize simulated signal communication between them.

[0070] The interconnect structure within the interconnect region can be implemented as gold wire leads, pads, substrate integrated waveguides (SiW), or slot coupling, etc. The interconnect structure assembly can be configured with corresponding structures based on the interconnect structure parameters, and the internal interconnect structure material parameters and interconnect structure substrate performance parameters can be configured as needed. For example, selecting transmission structures of different materials can change the conductivity of the transmission structure; for transmission structures of the same material, selecting different conductor surface roughness can change the loss during signal transmission; and different performance parameters can be configured for the substrate in the interconnect structure to simulate the electrical performance of substrates of different materials, thereby determining their impact on the signal transmission of the interconnect structure.

[0071] During the adjustment of the RF system simulation model, the connection structure can also be adjusted accordingly to improve the connection relationship between components and reduce signal loss during transmission between components.

[0072] This disclosure also provides a digital prototype design apparatus for a radio frequency system, such as Figure 4 As shown, it includes: Module 401 is used to construct simulation models of multiple radio frequency system components in the simulation space. Parameter acquisition model 402 is used to perform the first simulation test on each antenna component simulation model and each RF front-end component simulation model, and to obtain the corresponding performance parameters to build a simulation model library; The combination module 403 is used to select RF system component simulation models from the simulation model library according to the target performance of the RF system, combine them in the simulation space through the system tooling structure model, and transmit signals through the interconnection structure component simulation model to obtain the RF system simulation model. The simulation module 404 is used to perform a second simulation test on the RF system simulation model, and adjust the RF system simulation model according to the simulation test results to obtain the design scheme of the RF system.

[0073] In another embodiment provided in this disclosure, the construction module 401 is further configured to construct multiple different structural models of the antenna components in the first simulation space according to the antenna type and structural parameters of the antenna components; set first simulation parameters for each structural model of the antenna components, and determine the first region of the structural model of the antenna components as the first connection region, thereby obtaining multiple antenna component simulation models.

[0074] In another embodiment provided in this disclosure, the construction module 401 is further configured to establish structural models of multiple radio frequency front-end components in a second simulation space based on the target functions of the radio frequency front-end components; the radio frequency component models are established according to radio frequency components that realize the target functions of the radio frequency front-end components; the radio frequency front-end circuit transmission models are established according to preset connection rules between radio frequency components, and are used to simulate the signal transmission between each radio frequency component; each radio frequency component model is configured as a corresponding equivalent model, and the second simulation parameters of the radio frequency front-end circuit transmission model are adjusted; for each structural model of the radio frequency front-end component, the second region of the structural model of the radio frequency front-end component is determined as the second connection region, thereby obtaining multiple radio frequency front-end component simulation models.

[0075] In another embodiment provided in this disclosure, the parameter acquisition model 402 is further configured to perform simulation tests on the antenna component simulation model for the first simulation function corresponding to each antenna component simulation model, and obtain the first performance parameters of the corresponding antenna component simulation model; perform simulation tests on the radio frequency front-end component simulation model for the second simulation function corresponding to each radio frequency front-end component simulation model, and obtain the second performance parameters of the corresponding radio frequency front-end component simulation model; determine the correspondence between each radio frequency front-end component simulation model and each antenna component simulation model and performance parameters respectively, and construct a simulation model library based on the correspondence.

[0076] In another embodiment provided in this disclosure, the combination module 403 is further configured to select an antenna component simulation model and a radio frequency front-end component simulation model corresponding to the target performance from the simulation model library; in the third simulation space, combine the antenna component simulation model and the radio frequency front-end component simulation model at a preset position through a system tooling structure model; and connect the interconnect structure component simulation model to the antenna component simulation model and the radio frequency front-end component simulation model respectively to obtain a radio frequency system simulation model.

[0077] In another embodiment provided in this disclosure, the simulation module 404 is further configured to perform a second simulation test on the RF system simulation model to obtain transmission performance test results and reception performance test results respectively; compare the transmission performance test results and reception performance test results with the respective target performance; adjust the RF system simulation model according to the comparison results until the transmission performance test results and reception performance test results of the adjusted RF system simulation model reach the target performance; and determine the adjusted RF system simulation model as the design scheme of the RF system.

[0078] In another embodiment provided in this disclosure, the simulation module 404 is further configured to input an excitation signal from the first end of the RF front-end component simulation model into the RF system simulation model, perform simulation to obtain a first output signal, and determine the transmission performance parameters of the RF front-end component based on the first output signal; input the first output signal into the antenna component simulation model to obtain a first simulated electromagnetic wave, and determine the transmission performance parameters of the antenna component based on the first simulated electromagnetic wave; and determine the transmission performance test result of the RF system simulation model based on the transmission performance parameters of the RF front-end component and the transmission performance parameters of the antenna component.

[0079] In another embodiment provided in this disclosure, the simulation module 404 is further configured to receive a second simulated electromagnetic wave in the simulation space from the antenna component simulation model to obtain a simulated feed signal, and determine the receiving performance parameters of the antenna component based on the simulated feed signal; input the simulated feed signal from the second end of the RF front-end component simulation model to the RF front-end component simulation model to perform simulation to obtain a first input signal, and acquire the signal parameters of the first input signal; determine the receiving performance parameters of the RF front-end component based on the signal parameters of the first input signal; and determine the receiving performance test result of the RF system simulation model based on the receiving performance parameters of the antenna component and the receiving performance parameters of the RF front-end component.

[0080] In another embodiment provided in this disclosure, the construction module 401 is further configured to establish an interconnect structure component structure model based on the connection structure of the RF system component simulation model; wherein, the interconnect structure component structure model is used to characterize the connection relationship between the RF system component simulation models; and configures a third simulation parameter for the interconnect structure component structure model to obtain the interconnect structure component simulation model.

[0081] Through the above description of the embodiments, those skilled in the art can clearly understand that the embodiments of this disclosure can be implemented in hardware or by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solutions of the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, mobile hard drive, etc.) and includes several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this disclosure.

[0082] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes in the drawings are not necessarily essential for implementing this disclosure.

[0083] Those skilled in the art will understand that the modules in the apparatus of the embodiments can be distributed in the apparatus of the embodiments as described in the embodiments, or they can be located in one or more devices different from this embodiment with corresponding changes. The modules of the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0084] The sequence numbers of the embodiments disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0085] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A method for designing a digital prototype of a radio frequency system, characterized in that, include: Multiple RF system component simulation models are constructed in the simulation space; wherein, the RF system component simulation models include: antenna component simulation models and RF front-end component simulation models; Multiple antenna component simulation models are constructed in the simulation space, including: Based on the antenna type and structural parameters of the antenna components, structural models of multiple different antenna components are constructed in the first simulation space. For each antenna component's structural model, a first simulation parameter is set, and a first region of the antenna component's structural model is determined as a first connection region, resulting in multiple antenna component simulation models; wherein, the first connection region is the connection structure with the interconnection structure component simulation model; Multiple RF front-end component simulation models are constructed in the simulation space, including: Based on the target function of the RF front-end components, structural models of multiple RF front-end components are established in the second simulation space. The structural model of the RF front-end component is obtained by combining the RF element model and the RF front-end circuit transmission model. The RF element model is established according to the RF elements that realize the target function of the RF front-end component. The RF front-end circuit transmission model is established according to the preset connection rules between the RF elements and is used to simulate the signal transmission between the RF elements. Configure each RF component model as its corresponding equivalent model, and adjust the second simulation parameters of the RF front-end circuit transmission model. For each RF front-end component's structural model, the second region of the structural model is determined as the second connection region, resulting in multiple RF front-end component simulation models; wherein, the second connection region is the connection structure with the interconnect structure component simulation model; The simulation models of each antenna component and each RF front-end component were subjected to the first simulation test, and the corresponding performance parameters were obtained to build a simulation model library. Based on the target performance of the RF system, RF system component simulation models are selected from the simulation model library, combined in the simulation space through system tooling structure models, and signal transmission is performed through interconnection structure component simulation models to obtain the RF system simulation model. A second simulation test is performed on the RF system simulation model. Based on the simulation test results, the RF system simulation model is adjusted to obtain the RF system design scheme.

2. The method as described in claim 1, characterized in that, The first simulation parameters include at least one of the following: antenna substrate material parameters and feed structure parameters.

3. The method as described in claim 1, characterized in that, The equivalent model for the RF component model shall be configured as at least one of the following: behavioral model, compact model, macro model, and black box model; the second simulation parameter for the RF front-end circuit transmission model shall include at least one of the following: front-end circuit transmission structure parameters, front-end circuit transmission material parameters, and front-end circuit substrate performance parameters.

4. The method as described in claim 1, characterized in that, The process of performing a first simulation test on each antenna component simulation model and each RF front-end component simulation model, obtaining the corresponding performance parameters, and constructing a simulation model library includes: For each antenna component simulation model, a first simulation test is performed on the antenna component simulation model to obtain the first performance parameters of the corresponding antenna component simulation model; wherein, the first performance parameters include at least one of the following: antenna operating frequency, antenna VSWR, antenna gain, field pattern, scanning range, beamwidth and polarization mode; For each RF front-end component simulation model, a first simulation test is performed on the RF front-end component simulation model to obtain the second performance parameters of the corresponding RF front-end component simulation model; wherein, the second performance parameters include at least one of the following: RF front-end link gain, RF front-end transmit power, RF front-end receive noise, RF front-end operating frequency range, and RF front-end bandwidth; The correspondence between the simulation model of each RF front-end component and the simulation model of each antenna component and the performance parameters is determined respectively, and a simulation model library is constructed based on the correspondence.

5. The method as described in claim 1, characterized in that, The process involves selecting RF system component simulation models from a simulation model library based on the target performance of the RF system, combining them in the simulation space using system tooling structure models, and transmitting signals through interconnection structure component simulation models to obtain the RF system simulation model, including: Select the antenna component simulation model and the RF front-end component simulation model that correspond to the target performance from the simulation model library; In the third simulation space, the antenna component simulation model and the radio frequency front-end component simulation model are combined in a preset position using a system tooling structure model; and The simulation model of the radio frequency system is obtained by connecting the simulation model of the interconnect structure component with the simulation model of the antenna component and the simulation model of the radio frequency front-end component respectively.

6. The method as described in claim 1, characterized in that, The second simulation test of the RF system simulation model, and the adjustment of the RF system simulation model based on the simulation test results to obtain the RF system design scheme, includes: A second simulation test was performed on the aforementioned RF system simulation model to obtain the transmission performance test results and the reception performance test results, respectively. The transmission performance test results and the reception performance test results are compared with the target performance. Based on the comparison results, the RF system simulation model is adjusted until the transmission performance test results and reception performance test results of the adjusted RF system simulation model reach the target performance. The adjusted RF system simulation model is then determined as the design scheme of the RF system.

7. The method as described in claim 6, characterized in that, A second simulation test was performed on the aforementioned RF system simulation model to obtain the transmission performance test results, including: The excitation signal is input from the first end of the RF front-end component simulation model into the RF system simulation model, and a first output signal is obtained through simulation. The transmission performance parameters of the RF front-end component are determined based on the first output signal. The transmission performance parameters of the RF front-end component include at least one of the following: front-end transmission operating frequency, transmission link S-parameters, transmission link frequency response, transmission link power, transmission phase, and transmission link dynamic range. The first output signal is input into the antenna component simulation model to obtain a first simulated electromagnetic wave, and the transmission performance parameters of the antenna component are determined based on the first simulated electromagnetic wave; wherein, the first simulated electromagnetic wave output by the antenna component simulation model is obtained by the antenna component simulation model based on the first output signal; the transmission performance parameters of the antenna component include at least one of the following: antenna transmission operating frequency, system transmission field pattern, system transmission scanning range, system transmission gain, and radiated power; Based on the transmission performance parameters of the RF front-end component and the antenna component, the transmission performance test results of the RF system simulation model are determined.

8. The method as described in claim 6, characterized in that, A second simulation test was performed on the aforementioned RF system simulation model to obtain the reception performance test results, including: The antenna assembly simulation model receives a second simulated electromagnetic wave in the simulation space to obtain a simulated feed signal, and determines the receiving performance parameters of the antenna assembly based on the simulated feed signal; wherein, the receiving performance parameters of the antenna assembly include at least one of the following: antenna receiving operating frequency, receiving field pattern, receiving power, receiving phase, and receiving gain; The simulated power supply signal is input into the RF front-end component simulation model from the second end of the simulation model to obtain the first input signal through simulation, and the signal parameters of the first input signal are obtained. The receiving performance parameters of the radio frequency front-end component are determined based on the signal parameters of the first input signal; wherein the receiving performance parameters of the radio frequency front-end component include at least one of the following: front-end receiving operating frequency, system receiving S-parameters, system receiving signal synthesis power, system receiving noise figure, system receiving frequency response, and system receiving dynamic range; Based on the receiving performance parameters of the antenna assembly and the receiving performance parameters of the RF front-end assembly, the receiving performance test results of the RF system simulation model are determined.

9. The method as described in claim 1, characterized in that, The simulation model of the interconnect structure component was determined using the following method: Based on the connection structure of the RF system component simulation model, an interconnect structure component structural model is established; wherein, the interconnect structure component structural model is used to characterize the connection relationship between the RF system component simulation models; Configure third simulation parameters for the interconnect structure component model to obtain an interconnect structure component simulation model; wherein, the interconnect structure component simulation model is used to establish a simulation communication relationship in the radio frequency system component simulation model; the third simulation parameters include at least one of the following: interconnect structure parameters, interconnect structure material parameters, and interconnect structure substrate performance parameters.

10. A digital prototype design device for a radio frequency system, characterized in that, include: A construction module is used to construct multiple RF system component simulation models in a simulation space. The RF system component simulation models include antenna component simulation models and RF front-end component simulation models. Constructing multiple antenna component simulation models in the simulation space includes: constructing multiple different antenna component structural models in a first simulation space based on the antenna type and structural parameters of the antenna components; setting first simulation parameters for each antenna component structural model and determining a first region of the antenna component structural model as a first connection region, thus obtaining multiple antenna component simulation models; wherein the first connection region is the connection structure with the interconnect structure component simulation model. Constructing multiple RF front-end component simulation models in the simulation space includes: based on the target function of the RF front-end components, in a second simulation space... Multiple structural models of radio frequency (RF) front-end components are established. Each RF front-end component structural model is obtained by combining RF element models and RF front-end circuit transmission models. The RF element models are established based on RF elements that implement the target function of the RF front-end component. The RF front-end circuit transmission models are established according to preset connection rules between RF elements and are used to simulate signal transmission between RF elements. Each RF element model is configured as a corresponding equivalent model, and the second simulation parameters of the RF front-end circuit transmission model are adjusted. For each RF front-end component structural model, the second region of the structural model is determined as the second connection region, resulting in multiple RF front-end component simulation models. The second connection region represents the connection structure with the interconnection structure component simulation model. The parameter acquisition model is used to perform the first simulation test on each antenna component simulation model and each RF front-end component simulation model, and to obtain the corresponding performance parameters to build a simulation model library. The combination module is used to select RF system component simulation models from the simulation model library according to the target performance of the RF system, combine them in the simulation space through the system tooling structure model, and transmit signals through the interconnect structure component simulation model to obtain the RF system simulation model. The simulation module is used to perform a second simulation test on the RF system simulation model, and adjust the RF system simulation model according to the simulation test results to obtain the design scheme of the RF system.

Images