Analog front-end interface network optimization system of high-speed Ethernet transmission system
By optimizing the analog front-end interface network of the high-speed Ethernet transmission system, and adopting a collaborative design of low-pass filters, common-mode chokes, and common-mode terminals, combined with high-frequency magnetoelectric composite materials and dynamic tunable technology, the problems of high signal loss, common-mode interference, and temperature drift were solved, achieving efficient signal transmission and system stability and consistency.
Patent Information
- Application Number
- CN202511112550.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-09
- Publication Date
- 2025-12-12
AI Technical Summary
Existing high-speed Ethernet transmission systems suffer from problems such as high high-frequency signal loss, insufficient common-mode interference suppression, performance instability due to temperature drift, poor multi-rate adaptability, low production consistency, and low fault diagnosis efficiency.
The system employs a collaborative design that integrates a low-pass filter optimization module, a common-mode choke optimization module, a common-mode termination optimization module, a signal input interface, and a signal output interface. This design combines high-frequency magnetoelectric composite materials, a distributed RC network, a MEMS tunable capacitor array, and a dynamically tunable design to achieve collaborative operation between modules. The system performance is optimized through simulation verification, process adaptation, and fault diagnosis.
Within a specified frequency band, it reduces insertion loss, improves common-mode rejection ratio and signal-to-noise ratio, adapts to wide temperature environments, enables real-time adaptation of multi-rate signals, improves system stability and production consistency, and shortens fault location time.
Smart Images
Figure CN121125483A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the field of high-speed Ethernet, in particular to an analog front-end interface network optimization system of a high-speed Ethernet transmission system. BACKGROUND
[0002] High-speed Ethernet refers to an Ethernet technology with a data transmission rate higher than that of a traditional Ethernet, and is a series of Ethernet standards developed with the growth of bandwidth demand of network applications, and is mainly used for realizing high-speed data transmission in a local area network and is widely applied to enterprise networks, data centers, cloud computing and the like.
[0003] In the high-speed Ethernet transmission system, the analog front-end interface is a key link for guaranteeing signal integrity, but the prior art has the following problems:
[0004] When high-frequency signals are transmitted, the low-pass filter and the common-mode suppression module have poor cooperativeness, and impedance mismatching is prone to cause an increase in insertion loss;
[0005] The common-mode choke coil adopts a traditional magnetic core material, and the magnetic permeability sharply decreases at a high frequency band, so that the common-mode interference suppression capability is insufficient, and the signal signal-to-noise ratio is affected;
[0006] The module lacks dynamic tunable capability, and it is difficult to adapt to different filtering requirements of multi-rate signals;
[0007] Simulation verification and process adaptation are insufficient, element consistency deviation is large in batch production, and fault positioning takes time, thereby affecting system reliability.
[0008] Therefore, it is necessary to provide an analog front-end interface network optimization system of a high-speed Ethernet transmission system to solve the above technical problems. SUMMARY
[0009] The application provides an analog front-end interface network optimization system of a high-speed Ethernet transmission system, which solves the problems of large high-frequency signal loss, insufficient common-mode interference suppression, performance instability caused by temperature drift, poor multi-rate adaptability, low production consistency and low fault troubleshooting efficiency in the prior art analog front-end interface network of a high-speed Ethernet.
[0010] To solve the above technical problems, the application provides an analog front-end interface network optimization system of a high-speed Ethernet transmission system, which comprises:
[0011] a low-pass filter optimization module, a common-mode choke coil optimization module, a common-mode terminal optimization module, a signal input interface, a signal output interface and a module cooperative working mechanism;
[0012] The input end of the common-mode choke coil optimization module is wirelessly connected to the output end of the low-pass filter optimization module.
[0013] The input end of the common mode terminal optimization module is wirelessly connected to the output end of the common mode choke optimization module;
[0014] The signal input interface is wirelessly connected to the input end of the low-pass filter optimization module;
[0015] The signal output interface is wirelessly connected to the output end of the common mode terminal optimization module;
[0016] The low-pass filter optimization module comprises a distributed transmission line and MIM capacitor combination unit, a six-order filter structure unit, and a tunable parameter reservation unit;
[0017] The common mode choke optimization module comprises a high-frequency magnetic-electric composite material application subunit, an integrated common mode filter selection unit, and a resonance suppression design unit;
[0018] The common mode choke optimization module comprises a distributed RC network unit, a high-precision, low-temperature drift element selection unit, and a dynamic tunable design unit.
[0019] Preferably, the high-precision, low-temperature drift element selection unit is connected to the integrated common mode filter selection unit, the dynamic tunable design unit is connected to the tunable parameter reservation unit and the common mode choke optimization module respectively, and the distributed RC network unit is connected to the signal output interface.
[0020] Preferably, the high-frequency magnetic-electric composite material application subunit in the common mode choke optimization module adopts a laminated core structure.
[0021] Preferably, the distributed transmission line and MIM capacitor combination unit in the low-pass filter optimization module adopts an integrated design of microstrip line and pad.
[0022] Preferably, the respective module cooperative working mechanisms are connected to the low-pass filter optimization module, the common mode choke optimization module, and the common mode terminal optimization module.
[0023] Preferably, the low-pass filter optimization module further comprises a simulation verification module, a process adaptation module, a performance expansion module, and a fault troubleshooting module, which are respectively connected to the distributed transmission line and MIM capacitor combination unit, the six-order filter structure unit, and the tunable parameter reservation unit.
[0024] Preferably, the simulation verification module comprises a multi-physical field coupling simulation subunit and a time-domain-frequency-domain joint simulation subunit, can output a "power, temperature, and loss" correlation curve, and is under a 10Gbps signal input.
[0025] Preferably, the process adaptation module comprises a PCBLayout collaborative design subunit and a mounting precision control subunit, the PCBLayout collaborative design subunit adopts a teardrop-shaped pad transition structure, verifies the solder paste amount deviation through a DFM software, and the mounting precision control subunit requires component mounting offset and is detected in real time through an AOI system.
[0026] Preferably, the performance expansion module comprises a wideband matching optimization subunit and a temperature adaptive compensation subunit, the wideband matching optimization subunit compensates 1GHz-10GHz through a parasitic inductance compensation network, and the temperature adaptive compensation subunit is linked with a single-chip microcomputer through an NTC resistor.
[0027] Preferably, the fault troubleshooting module comprises a node test point subunit and a redundancy switching subunit, the node test point subunit can directly measure the impedance of a transmission line and a capacitor connection node, and the redundancy switching subunit realizes standby path switching through a radio frequency switch and triggers an alarm signal.
[0028] Compared with the related art, the analog front-end interface network optimization system of the high-speed Ethernet transmission system has the following beneficial effects:
[0029] The analog front-end interface network optimization system of the high-speed Ethernet transmission system is provided, and through the collaborative design of a low-pass filter optimization module and a common-mode choke optimization module, the insertion loss in a frequency band in a specified section is reduced, which is higher than that of a traditional system.
[0030] The laminated application of the high-frequency magnetic-electric composite material improves the common-mode rejection ratio, effectively suppresses high-frequency common-mode interference, and improves the signal-to-noise ratio;
[0031] The high-precision low-temperature drift element is combined with a dynamic tunable design, so that the cutoff frequency drift in a low temperature range is controlled within a specified value to adapt to the requirements of a wide temperature environment;
[0032] The MEMS adjustable capacitance array supports dynamic switching of the cutoff frequency between specified values, and can meet the real-time adaptation of multi-rate signals;
[0033] The distributed RC network is combined with a resonance suppression design to improve the stability of signal transmission. BRIEF DESCRIPTION OF DRAWINGS
[0034] Figure 1 The structure schematic diagram of the first embodiment of the analog front-end interface network optimization system of the high-speed Ethernet transmission system provided by the application is shown in the figure.
[0035] Figure 2 The structure schematic diagram of the first embodiment of the analog front-end interface network optimization system of the high-speed Ethernet transmission system provided by the application is shown in the figure. DETAILED DESCRIPTION
[0036] The application will be further described below in conjunction with the accompanying drawings and embodiments.
[0037] First embodiment
[0038] Please refer to Figure 1 wherein, Figure 1 A structure schematic diagram of a first embodiment of an analog front-end interface network optimization system of a high-speed Ethernet transmission system provided by the application. The analog front-end interface network optimization system of the high-speed Ethernet transmission system comprises:
[0039] A low-pass filter optimization module, a common-mode choke optimization module, a common-mode terminal optimization module, a signal input interface, a signal output interface and a module cooperative working mechanism;
[0040] The input end of the common-mode choke optimization module is wirelessly connected to the output end of the low-pass filter optimization module;
[0041] The input end of the common-mode terminal optimization module is wirelessly connected to the output end of the common-mode choke optimization module;
[0042] The signal input interface is wirelessly connected to the input end of the low-pass filter optimization module;
[0043] The signal output interface is wirelessly connected to the output end of the common-mode terminal optimization module;
[0044] The low-pass filter optimization module comprises a distributed transmission line and MIM capacitor combination unit, a six-order filter structure unit and an adjustable parameter reservation unit;
[0045] The common-mode choke optimization module comprises a high-frequency magnetic-electric composite material application subunit, an integrated common-mode filter selection unit and a resonance suppression design unit;
[0046] The common-mode choke optimization module comprises a distributed RC network unit, a high-precision, low-temperature drift element selection unit and a dynamic tunable design unit.
[0047] The high-precision, low-temperature drift element selection unit is connected to the integrated common-mode filter selection unit, the dynamic tunable design unit is respectively connected to the adjustable parameter reservation unit and the common-mode choke optimization module, and the distributed RC network unit is connected to the signal output interface.
[0048] The high-frequency magnetic-electric composite material application subunit in the common-mode choke optimization module adopts a laminated core structure.
[0049] The distributed transmission line and MIM capacitor combination unit in the low-pass filter optimization module adopts an integrated design of microstrip line and pad.
[0050] The collaborative working mechanism of each module is connected to the low-pass filter optimization module, the common-mode choke optimization module, and the common-mode termination optimization module, respectively.
[0051] The working process of the low-pass filter optimization module:
[0052] The distributed transmission line and MIM capacitor combination unit adopts an integrated design of microstrip line and pad, and uses the distributed inductance of the transmission line and the MIM capacitor to form a basic LC filter network to initially filter out high-frequency noise.
[0053] The sixth-order filter structure unit is cascaded with multiple LC resonant circuits to further improve the out-of-band rejection ratio, ensuring that useful signals below 1 GHz are transmitted without attenuation.
[0054] The adjustable parameter reserved unit receives control signals from the dynamic tunable design unit and dynamically adjusts the filter cutoff frequency through the MEMS capacitor array to adapt to signals of different rates.
[0055] The working process of the common mode choke optimization module:
[0056] The high-frequency magnetoelectric composite material application subunit adopts a stacked magnetic core structure to enhance the hysteresis loss of common-mode signals and improve the common-mode rejection ratio in the 1GHz to 10GHz frequency band.
[0057] The integrated common-mode filter selection unit works in conjunction with the high-precision low-temperature drift component selection unit to screen components with a resistance temperature coefficient ≤25ppm / ℃ and a capacitance temperature coefficient ≤50ppm / ℃, ensuring that parameter drift is ≤±2% in an environment of -40℃~125℃.
[0058] The resonance suppression design unit introduces a damping resistor to suppress parasitic resonance of the common-mode choke in the high-frequency band, thus avoiding signal spike interference.
[0059] The working process of the common-mode terminal optimization module:
[0060] Distributed RC network units are impedance matched with the transmission line characteristics to absorb reflected signals and reduce the standing wave ratio.
[0061] The dynamically tunable design unit monitors signal frequency changes in real time and adjusts the terminal RC network parameters synchronously to ensure impedance matching for multi-rate signals.
[0062] The working principle of the analog front-end interface network optimization system for a high-speed Ethernet transmission system provided by this invention is as follows:
[0063] Signal transmission path: External high-speed Ethernet signals enter the system through the signal input interface, are first transmitted to the low-pass filter optimization module, and after filtering, enter the common-mode choke optimization module to suppress common-mode interference. Then, they are impedance matched and signal conditioned by the common-mode termination optimization module, and finally output to the back-end equipment through the signal output interface.
[0064] Module coordination mechanism: The coordination mechanism of each module works by using timing control and parameter linkage to coordinate the working order of low-pass filtering, common-mode rejection and termination matching, so as to ensure that there is no phase shift or delay when the signal is transmitted between modules.
[0065] Compared with related technologies, the analog front-end interface network optimization system for a high-speed Ethernet transmission system provided by this invention has the following beneficial effects:
[0066] This invention provides an analog front-end interface network optimization system for a high-speed Ethernet transmission system. Through the collaborative design of a low-pass filter optimization module and a common-mode choke optimization module, insertion loss is reduced within a specified frequency band, resulting in an improvement over traditional systems.
[0067] The layered application of high-frequency magnetoelectric composite materials improves the common-mode rejection ratio, effectively suppresses high-frequency common-mode interference, and enhances the signal-to-noise ratio.
[0068] The combination of high-precision low-temperature drift elements and dynamic tunable design controls the cutoff frequency drift within a specified value in the low temperature range, adapting to the requirements of a wide temperature environment.
[0069] MEMS adjustable capacitor arrays support dynamic switching of cutoff frequencies between specified values, which can meet the real-time adaptation of multi-rate signals.
[0070] Distributed RC networks, combined with resonance suppression design, improve the stability of signal transmission.
[0071] Second Embodiment
[0072] Please refer to the following: Figure 2 Based on the first embodiment of this application, which provides a simulated front-end interface network optimization system for a high-speed Ethernet transmission system, the second embodiment of this application proposes another simulated front-end interface network optimization system for a high-speed Ethernet transmission system. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the separate implementation of the first embodiment.
[0073] Specifically, the second embodiment of this application provides a different analog front-end interface network optimization system for a high-speed Ethernet transmission system. In this analog front-end interface network optimization system for a high-speed Ethernet transmission system, the low-pass filter optimization module further includes a simulation verification module, a process adaptation module, a performance expansion module, and a fault diagnosis module, which are respectively connected to the distributed transmission line and MIM capacitor combination unit, the sixth-order filter structure unit, and the adjustable parameter reservation unit.
[0074] The simulation verification module includes a multi-physics field coupled simulation subunit and a time-domain-frequency domain joint simulation subunit, which can output a correlation curve of "power, temperature and loss" under a 10Gbps signal input.
[0075] The process adaptation module includes a PCBLayout collaborative design subunit and a mounting accuracy control subunit. The PCBLayout collaborative design subunit adopts a teardrop-shaped pad transition structure and verifies solder paste quantity deviation through DFM software. The mounting accuracy control subunit requires component mounting offset and detects it in real time through an AOI system.
[0076] The performance expansion module includes a wideband matching optimization subunit and a temperature adaptive compensation subunit. The wideband matching optimization subunit enables 1GHz to 10GHz through a parasitic inductance compensation network, and the temperature adaptive compensation subunit is linked to the microcontroller through an NTC resistor.
[0077] The fault diagnosis module includes a node test point subunit and a redundancy switching subunit. The node test point subunit can directly measure the impedance of the transmission line and capacitor connection node. The redundancy switching subunit realizes backup path switching through radio frequency switch and triggers alarm signal.
[0078] The working process of the simulation verification module:
[0079] The multiphysics coupling simulation subunit collects power and temperature data of the transmission line in real time and outputs a correlation curve of "power, temperature and loss". When the loss exceeds 1dB, a parameter adjustment command is triggered.
[0080] The time-domain-frequency-domain co-simulation subunit is input with a 10Gbps pseudo-random sequence to monitor the eye diagram opening and jitter value in real time. If the eye diagram is closed or the jitter exceeds the standard, a compensation signal is sent to the adjustable parameter reserved unit.
[0081] The working process of the process adaptation module:
[0082] The PCB layout collaborative design sub-unit adopts a teardrop-shaped pad transition structure. The solder paste amount deviation is verified by DFM software to ensure that the parasitic inductance deviation at the soldering point of the distributed transmission line and the MIM capacitor is ≤0.1nH.
[0083] The placement accuracy control subunit detects the placement offset of 0402 packaged components in real time through the AOI system. If the offset exceeds the standard, it triggers the placement equipment calibration to avoid coupling coefficient deviation caused by component misalignment.
[0084] The working process of the performance expansion module:
[0085] The wideband matching optimization subunit compensates for the parasitic inductance of the MIM capacitor by using a series small-value inductor, so that the VSWR in the 1GHz to 10GHz band is ≤1.2, which can meet the wideband requirements of multi-rate signals.
[0086] The temperature adaptive compensation subunit monitors the ambient temperature in real time through an NTC resistor. When the temperature exceeds 70°C, it sends a signal to the microcontroller to control the adjustable parameter reservation unit to increase the capacitance value by 0.5pF to 1pF, thereby controlling the cutoff frequency drift within ±1%.
[0087] The working process of the troubleshooting module:
[0088] The node test point subunit sets up test points at the connection nodes between the transmission line and the capacitor. The impedance is measured in real time by a network analyzer. If the impedance deviates by more than 5Ω, it is determined that the transmission line loss is too high or the capacitor is faulty, and the fault location is located.
[0089] In the event of a primary path failure, the redundancy switching subunit automatically switches to the backup path via an RF switch, simultaneously triggering LED alarms and UART information output to ensure uninterrupted signal transmission.
[0090] The working principle of the analog front-end interface network optimization system for a high-speed Ethernet transmission system provided by this invention is as follows:
[0091] When in use, the low-pass filter optimization module adds a simulation verification module, a process adaptation module, a performance expansion module, and a fault diagnosis module, which work in conjunction with the original units (distributed transmission line and MIM capacitor combination unit, sixth-order filter structure unit, and adjustable parameter reserved unit).
[0092] The new module improves system stability and production consistency through real-time monitoring, simulation feedback, process calibration and fault handling, ensuring that the filtering performance still meets the standards in complex environments.
[0093] Compared with related technologies, the analog front-end interface network optimization system for a high-speed Ethernet transmission system provided by this invention has the following beneficial effects:
[0094] This invention provides an analog front-end interface network optimization system for a high-speed Ethernet transmission system. The simulation verification module uses multi-physics field and time-domain and frequency-domain joint simulation to avoid thermal stress and signal integrity risks in advance, thus shortening the development cycle.
[0095] The performance expansion module features wideband matching and temperature compensation to ensure frequency band VSWR and cutoff frequency temperature drift, adapting to complex electromagnetic environments.
[0096] The node testing and redundancy switching design of the fault diagnosis module shortens the fault location time and improves the system's fault tolerance.
[0097] After collaborative optimization of each module, the out-of-band rejection ratio of the overall system is improved, meeting the stringent requirements of high-speed Ethernet for strong interference suppression.
[0098] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A network optimization system for the analog front-end interface of a high-speed Ethernet transmission system, characterized in that, include: The module includes a low-pass filter optimization module, a common-mode choke optimization module, a common-mode termination optimization module, a signal input interface, a signal output interface, and the collaborative working mechanism of each module. The input of the common-mode choke optimization module is wirelessly connected to the output of the low-pass filter optimization module; The input end of the common-mode terminal optimization module is wirelessly connected to the output end of the common-mode choke optimization module; The signal input interface is wirelessly connected to the input end of the low-pass filter optimization module; The signal output interface is wirelessly connected to the output end of the common-mode terminal optimization module; The low-pass filter optimization module includes a distributed transmission line and MIM capacitor combination unit, a sixth-order filter structure unit, and an adjustable parameter reservation unit. The common-mode choke optimization module includes a high-frequency magnetoelectric composite material application subunit, an integrated common-mode filter selection unit, and a resonance suppression design unit; The common-mode choke optimization module includes a distributed RC network unit, a high-precision, low-temperature drift component selection unit, and a dynamically tunable design unit.
2. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 1, characterized in that, The high-precision low-temperature drift component selection unit is connected to the integrated common-mode filter selection unit, the dynamic tunable design unit is connected to the adjustable parameter reservation unit and the common-mode choke optimization module respectively, and the distributed RC network unit is connected to the signal output interface.
3. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 1, characterized in that, The high-frequency magnetoelectric composite material application subunit in the common-mode choke optimization module adopts a stacked magnetic core structure.
4. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 1, characterized in that, The distributed transmission line and MIM capacitor combination unit in the low-pass filter optimization module adopts an integrated design of microstrip line and pad.
5. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 1, characterized in that, The collaborative working mechanism of each module is connected to the low-pass filter optimization module, the common-mode choke optimization module, and the common-mode termination optimization module, respectively.
6. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 1, characterized in that, The low-pass filter optimization module also includes a simulation verification module, a process adaptation module, a performance expansion module, and a fault diagnosis module, which are respectively connected to the distributed transmission line and MIM capacitor combination unit, the sixth-order filter structure unit, and the adjustable parameter reservation unit.
7. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 6, characterized in that, The simulation verification module includes a multi-physics field coupled simulation subunit and a time-domain-frequency domain joint simulation subunit, which can output the correlation curve of "power, temperature and loss" under a 10Gbps signal input.
8. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 6, characterized in that, The process adaptation module includes a PCBLayout collaborative design subunit and a mounting accuracy control subunit. The PCBLayout collaborative design subunit adopts a teardrop-shaped pad transition structure and verifies solder paste quantity deviation through DFM software. The mounting accuracy control subunit requires component mounting offset and detects it in real time through an AOI system.
9. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 6, characterized in that, The performance expansion module includes a wideband matching optimization subunit and a temperature adaptive compensation subunit. The wideband matching optimization subunit enables 1GHz to 10GHz through a parasitic inductance compensation network, and the temperature adaptive compensation subunit is linked to the microcontroller through an NTC resistor.
10. The analog front-end interface network optimization system for a high-speed Ethernet transmission system according to claim 6, characterized in that, The fault diagnosis module includes a node test point subunit and a redundancy switching subunit. The node test point subunit can directly measure the impedance of the transmission line and capacitor connection node. The redundancy switching subunit realizes backup path switching through radio frequency switch and triggers alarm signal.