Radio frequency driving device
By combining network communication module, data acquisition module, FPGA, DDS module, attenuation module and amplification module, the problems of excessive insertion loss and limited bandwidth in AOM RF driver are solved, and high stability and accurate signal modulation are achieved.
Patent Information
- Application Number
- CN202520563431.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing AOM RF drivers rely on external filters, which leads to excessive insertion loss and limited bandwidth.
The system employs a combination of network communication module, data acquisition module, FPGA, DDS module, attenuation module, amplification module and conditioning module. The attenuation module adjusts the signal power parameters generated by the DDS module, the amplification module amplifies the power, and the conditioning module filters out harmonics, thus avoiding reliance on external filters.
This achieves reduced insertion loss and expanded bandwidth without the need for external filters, thereby improving the stability and accuracy of signal modulation.
Smart Images
Figure CN223928323U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to radio frequency driver technical field, especially a radio frequency drive device. BACKGROUND
[0002] AOM (Acousto-Optic Modulator, acoustic-optic modulator) radio frequency driver is a kind of equipment for controlling acoustic-optic modulator, drives AOM by radio frequency signal, realizes the modulation to the frequency, intensity, phase etc. of laser, AOM is widely used in laser communication, spectral analysis, laser printing, optical measurement etc., the core function of AOM radio frequency driver is to generate high-stability radio frequency signal, and precise modulation to laser is realized by controlling the frequency and power of radio frequency signal.The existing harmonic suppression relies on external filter, resulting in too large insertion loss, and bandwidth is limited. SUMMARY
[0003] The utility model aims at overcoming the defects of prior art, and provides a radio frequency drive device.
[0004] The utility model discloses a radio frequency drive device, including network communication module, data acquisition module and FPGA, and network communication module and data acquisition module all are connected with FPGA electrically, still including DDS module, and the output of DDS module is connected with the input of attenuation module electrically, the output of attenuation module is connected with the input of amplification module electrically, and the output of amplification module is connected with the conditioning module electrically.
[0005] Preferably, the attenuation module further comprises a voltage-controlled attenuation module and a digital attenuation module, the voltage-controlled attenuation module is electrically connected with an external voltage, and the digital attenuation module is electrically connected with the output of the DDS module.
[0006] Preferably, the amplification module is further electrically connected with a power conditioning module.
[0007] The utility model has the advantages that the utility model adjusts the power parameter of the signal generated by the DDS module through the attenuation module, and the power is amplified through the amplification module, finally the harmonic introduced in the amplification process is filtered out through the conditioning module, so that it is no longer dependent on external filter, and the too large insertion loss and bandwidth limitation are avoided. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is the structural schematic diagram of radio frequency drive device;
[0009] In the figure, 1-network communication module, 2-serial communication module, 3-ADC module, 4-receiving module, 5-FPGA, 6-DDS module, 7-attenuation module, 8-phase-locked module, 9-power supply conditioning module, 10-amplification module, 11-conditioning module. DETAILED DESCRIPTION
[0010] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0011] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0012] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0013] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0014] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0015] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term '' set '', '' install '', '' link '', '' connect '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can indirectly connect through intermediate medium, can be two element internal communication, for ordinary skilled person in the art, can understand the specific meaning of above-mentioned term in the utility model with specific situation.
[0016] In the embodiment, as shown in a radio frequency driving device, including network communication module 1, data acquisition module and FPGA 5, network communication module 1 and data acquisition module are all electrically connected with FPGA 5, specifically, network communication module 1 is used to transmit data, data acquisition module includes serial communication module 2, ADC module 3 and receiving module 4, serial communication module 2 receives data through serial port, the main role of ADC module 3 is to receive data through sampling approach, the main role of receiving module 4 is to receive data through external high-low level, realizes that equipment is quickly frequency conversion on two frequency points. Figure 1 Still includes DDS module 6, the output of DDS module 6 is electrically connected with the output of FPGA 5, the output of DDS module 6 is electrically connected with the input of attenuation module 7, the output of attenuation module 7 is electrically connected with the input of amplification module 10, the output of amplification module 10 is electrically connected with conditioning module 11, the power parameter of signal generated by DDS module 6 is adjusted through attenuation module 7, and the power is amplified through amplification module 10, finally the harmonic introduced in the amplification process is filtered through conditioning module 11, so as not to rely on external filter, avoid that insertion loss is too large and bandwidth is limited.
[0017] Further, attenuation module 7 also includes voltage-controlled attenuation module and digital attenuation module, voltage-controlled attenuation module is electrically connected with external voltage, and digital attenuation module is electrically connected with the output of DDS module 6.
[0018] Further, the amplification module 10 is also electrically connected with the power conditioning module 9. Specifically, the main function of the amplification module 10 is to match the entire frequency band of 60MHz-320MHz and amplify the power of each frequency point to 35dBm, and the power conditioning module 9 is used to receive the DC power of the entire system, generate the required power of the amplification module 10 through a large-current stabilizer, so as to ensure that the amplification module 10 does not contain other factors affecting the output frequency except the background noise.
[0019] In the embodiment, each module involved is a prior art module, and the method for processing data by each module is also a prior art method, which is not improved and will not be described in detail. Only the prior art methods used by the modules will be listed, among which, the serial communication module 2 receives data by using a standard serial port protocol; the ADC module 3 adopts an existing ADC technology and a technology of issuing a frequency control word and a phase control word by FPGA data processing; the receiving module 4 adopts an existing IO trigger fast frequency modulation technology; the high-frequency reference source adopts a high-index phase noise crystal oscillator and a comb spectrum frequency multiplication technology; the phase-locked loop module 8 adopts an analog PID feedback technology; the power conditioning module 9 adopts a double-stage high-current LDO voltage stabilizing technology; and the conditioning module 11 adopts a large-power elliptical filter.
[0020] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or replace part of the technical features with equivalent ones, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A radio frequency driving device, comprising a network communication module (1), a data acquisition module and an FPGA (5), the network communication module (1) and the data acquisition module are electrically connected with the FPGA (5), characterized in that: The DDS module (6) is electrically connected with the output end of the FPGA (5), the output end of the DDS module (6) is electrically connected with the input end of the attenuation module (7), the output end of the attenuation module (7) is electrically connected with the input end of the amplification module (10), and the output end of the amplification module (10) is electrically connected with the conditioning module (11).
2. The radio frequency drive device of claim 1, wherein: The attenuation module (7) further comprises a voltage-controlled attenuation module and a digital attenuation module, the voltage-controlled attenuation module is electrically connected with an external voltage, and the digital attenuation module is electrically connected with the output end of the DDS module (6).
3. The radio frequency drive device of claim 2, wherein: The amplification module (10) is further electrically connected with the power supply conditioning module (9).