Uplink signal generator of DOCSIS4.0 system
By designing an uplink signal generator for the DOCSIS 4.0 system that integrates components such as a VCO frequency synthesis circuit, the problem of the lack of miniaturized portable devices in the system was solved, enabling convenient network construction and maintenance and improving network operation quality.
Patent Information
- Application Number
- CN202422961247.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-03
AI Technical Summary
The lack of miniaturized, portable uplink signal generators in existing DOCSIS 4.0 cable television systems leads to inconvenience in construction and maintenance.
A DOCSIS 4.0 system uplink signal generator was designed, comprising a VCO frequency synthesis circuit, a programmable attenuation circuit, a microprocessor circuit, a lithium battery circuit, a display circuit, and a micro USB interface circuit. A specific chip and circuit combination was used to achieve a miniaturized and portable design.
It provides a miniaturized, low-cost uplink signal generator, which facilitates the construction and maintenance of DOCSIS 4.0 cable television networks, ensures high-quality network operation, and has significant economic and social benefits.
Smart Images
Figure CN223452018U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wired television technical field especially, it relates to an upstream signal generator of DOCSIS4.0 system. BACKGROUND
[0002] CMTS technology is a kind of mature cable television two-way network transmission technology, it has experienced DOCSIS1.0, DOCSIS2.0, DOCSIS3.0, DOCSIS3.1 era, 2020 March release DOCSIS4.0.The spectrum option of DOCSIS 4.0 has been greatly improved compared with its previous iteration version.Through this latest version, users can now enjoy up to 10Gbps download speed and up to 6Gbps upload speed;In addition to the significant improvement in speed, it also realizes major upgrade in reducing delay.In order to cooperate with faster speed, DOCSIS 4.0 also includes extended spectrum technology, which expands the upstream signal spectrum to 684MHz, and the downstream signal spectrum to 1.8GHz.This kind of expanded spectrum creates a larger channel for data transmission, making it faster and more efficient.DOCSIS 4.0 cable television system, the working frequency range of upstream signal is 45MHz-684MHz, therefore, the existing DOCSIS 4.0 cable television two-way network construction, maintenance lacks the miniaturization, portable upstream signal generator of corresponding frequency range.
[0003] In view of the problems existing in the prior art, a miniaturized and portable upstream signal generator for DOCSIS4.0 system is provided. UTILITY MODEL CONTENT
[0004] The utility model aims at the defects of prior art, provides a kind of upstream signal generator of DOCSIS4.0 system.
[0005] To achieve the above object, the utility model adopts the following technical scheme:
[0006] A kind of upstream signal generator of DOCSIS4.0 system, including VCO frequency synthesis circuit, program-controlled attenuation circuit, microprocessor circuit, lithium battery circuit, display circuit, button circuit, micro USB interface circuit;
[0007] The output of the VCO frequency synthesis circuit is connected with the input of program-controlled attenuation circuit, the output of program-controlled attenuation circuit is connected with the output of the upstream radio frequency signal of DOCSIS4.0 system, the input of VCO frequency synthesis circuit, the input of program-controlled attenuation circuit are also respectively connected with the output of microprocessor circuit, microprocessor circuit is also respectively connected with lithium battery circuit, display circuit, button circuit, micro USB interface circuit.
[0008] Further, the VCO frequency synthesis circuit adopts a model of ADF4351.
[0009] Further, the program-controlled attenuation circuit adopts a model of PE4314.
[0010] Further, the microprocessor circuit adopts a model of MM32F031C8T6.
[0011] Further, the lithium battery circuit adopts a model of TP5000X.
[0012] Further, the display circuit adopts a model of HGF02402-LWH-LV-U.
[0013] Further, the key circuit adopts a light touch switch.
[0014] Further, the micro-USB interface circuit adopts a model of PL2303GC.
[0015] Compared with the prior art, the miniaturized, low-cost and portable DOCSIS 4.0 radio frequency uplink signal generator of the utility model, as a test instrument of the DOCSIS 4.0 cable television network, facilitates the construction and maintenance of the DOCSIS 4.0 cable television system network, and has important economic benefits and social benefits for guaranteeing the high-quality operation of the cable television system network. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is an uplink signal generator structure diagram of a DOCSIS 4.0 system provided by the embodiment. DETAILED DESCRIPTION
[0017] The embodiments of the utility model are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.
[0018] The utility model aims at the defects of the prior art and provides an uplink signal generator of a DOCSIS 4.0 system.
[0019] The embodiment provides an uplink signal generator of a DOCSIS 4.0 system, which is a test instrument of a cable television network, such as Figure 1As shown, including VCO frequency synthesis circuit 1, programmable attenuation circuit 2, microprocessor circuit 3, lithium battery circuit 4, display circuit 5, button circuit 6, micro USB interface circuit 7.
[0020] The output end of the VCO frequency synthesis circuit 1 is connected with the input end of the programmable attenuation circuit 2, the output end of the programmable attenuation circuit 2 is connected with the output end of the uplink radio frequency signal of the DOCSIS 4.0 system, the input end of the VCO frequency synthesis circuit 1 and the input end of the programmable attenuation circuit 2 are respectively connected with the output end of the microprocessor circuit 3, the output end of the microprocessor circuit 3 is further connected with the input end of the lithium battery circuit 4 and the input end of the display circuit 5, the input end of the microprocessor circuit 3 is connected with the output end of the button circuit 6, and the microprocessor circuit 3 is connected with the micro USB interface circuit 7.
[0021] The input signal of the cable television network is subjected to frequency synthesis processing by the VCO frequency synthesis circuit 1, and the processed signal is subjected to attenuation processing by the programmable attenuation circuit 2, the output end of the programmable attenuation circuit 2 is the output port of the uplink radio frequency signal of the DOCSIS 4.0 system, and is used for outputting the uplink radio frequency signal of the cable television network.
[0022] The microprocessor circuit 3 is used for controlling the VCO frequency synthesis circuit 1 and the programmable attenuation circuit 2, and the microprocessor circuit 3 is further used for controlling the lithium battery circuit 4, the display circuit 5, the button circuit 6 and the micro USB interface circuit 7.
[0023] The VCO frequency synthesis circuit 1 adopts the broadband frequency synthesizer of the integrated VCO of ADI company, the model is ADF4351, when the chip is used in combination with an external loop filter and an external reference frequency, a fractional-N or integer-N phase-locked loop (PLL) frequency synthesizer can be realized, by using a frequency division circuit, a radio frequency output frequency of 45MHz-684MHz can be generated, and the output radio frequency signal amplitude is 100dBμV.
[0024] The programmable attenuation circuit 2 adopts the programmable attenuation chip of Peregrine company, the model is PE4314, the attenuation step is 0.5dB to 31.5dB, the working frequency range is 1MHz-2.5GHz, and the amplitude of the output radio frequency signal can be adjusted as needed through the programmable attenuator.
[0025] The microprocessor circuit 3 adopts MM32F031C8T6 of Shanghai Lingdong Microelectronics, which is a 32-bit microcontroller with high-performance ARM®Cortex®-M0 as the core, the maximum working frequency can reach 72MHz, the built-in high-speed memory, the rich I / O ports and peripherals are connected to the external bus.
[0026] The lithium battery circuit 4 adopts TP5000X of Nanjing Tuopin Microelectronics, which is a switching step-down type single manganese lithium battery / lithium iron phosphate battery charge management chip, with input overcurrent, under-voltage protection, chip over-temperature protection, short circuit protection, battery temperature monitoring, input power overhigh shutdown function.
[0027] The display circuit 5 adopts a high-brightness color display screen (56*40) of Hangzhou Qingda Optoelectronics Co., Ltd., model HGF02402-LWH-LV-U.
[0028] The key circuit 6 adopts a 6*6*8 light touch switch of Hongqi Co., Ltd.
[0029] The micro USB interface circuit 7 adopts a low-cost, high-performance USB-to-serial bridge controller of PROLIFIC Company, model PL2303GC.
[0030] The uplink signal generator of the miniaturized, low-cost and portable DOCSIS 4.0 system provided by the embodiment is a test instrument of the DOCSIS 4.0 cable television network, facilitates the construction and maintenance of the DOCSIS 4.0 cable television system network, and has important economic and social benefits for guaranteeing the high-quality operation of the cable television system network.
[0031] Note that the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims
1. An upstream signal generator for a DOCSIS 4.0 system, characterized in that: Including VCO frequency synthesis circuit, program-controlled attenuation circuit, microprocessor circuit, lithium battery circuit, display circuit, key circuit, micro USB interface circuit; The output end of the VCO frequency synthesis circuit is connected to the input end of the programmable attenuation circuit, and the output end of the programmable attenuation circuit is connected to the output end of the uplink RF signal of the DOCSIS4.0 system. The input end of the VCO frequency synthesis circuit and the input end of the programmable attenuation circuit are also respectively connected to the output end of the microprocessor circuit, and the microprocessor circuit is also respectively connected to the lithium battery circuit, the display circuit, the key circuit, and the micro USB interface circuit.
2. The uplink signal generator of a DOCSIS 4.0 system according to claim 1, characterized in that: The model used in the VCO frequency synthesis circuit is ADF4351.
3. The uplink signal generator of a DOCSIS 4.0 system according to claim 1, characterized in that: The model used in the programmable attenuation circuit is PE4314.
4. The uplink signal generator of a DOCSIS 4.0 system according to claim 1, characterized in that: The model of the microprocessor circuit is MM32F031C8T6.
5. The uplink signal generator of a DOCSIS 4.0 system according to claim 1, characterized in that: The model used in the lithium battery circuit is TP5000X.
6. The uplink signal generator of a DOCSIS 4.0 system according to claim 1, characterized in that: The display circuit adopts the model HGF02402-LWH-LV-U.
7. The uplink signal generator of a DOCSIS 4.0 system according to claim 1, characterized in that: The key circuit adopts a touch switch.
8. The uplink signal generator of a DOCSIS 4.0 system according to claim 1, characterized in that: The model used by the micro USB interface circuit is PL2303GC.