A multi-frequency radio frequency signal booster using optical fiber transmission
Patent Information
- Application Number
- CN202620072196.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-20
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2036-01-20
AI Technical Summary
常规的无人机信号增强器一般支持两个频段，对于多个频段的应用场景，设计成本会成倍增加
[0008]本实用新型与现有技术相比具备的有益效果：采用光纤线代替常规射频连接线缆，具有体积小，成本低，通讯距离远的优点。光纤的损耗比射频馈线小。如果使用射频馈线，极限使用的距离小于50米，使用光纤实际传输距离大于200米以上。光纤线在每个使用频段的损耗相同，使用不同长度的光纤线，每个频段的损耗一致，便于工程设计。射频馈线在不同频段的损耗不同，使得在工程施工时，使用不同长度的射频馈线，无法兼顾多个应用的频段。
Smart Images
Figure CN224909492U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of signal enhancer technology, specifically a multi-frequency radio frequency signal enhancer using optical fiber transmission. Background Technology
[0002] Conventional drone signal boosters use RF cables as the connection method. RF cables suffer from significant loss over long distances, and for the same length, they are bulky and expensive, causing numerous inconveniences in practical applications. The RF cables used in conventional drone signal boosters have a limited operating distance of less than 50 meters; beyond 30 meters, their effectiveness drops significantly. The RF feeder cable experiences varying losses across different frequency bands, increasing the difficulty of installation. Conventional drone signal boosters typically support two frequency bands; for multi-band applications, the design cost increases exponentially. Utility Model Content
[0003] To overcome the shortcomings of the prior art, this utility model provides the following technical solution: a multi-frequency radio frequency signal enhancer using optical fiber transmission, comprising a host and a slave unit. Both the host and slave unit include a mounting body, on which a top cover is fixedly mounted. The top cover and the mounting body form a sealed space for waterproofing. One side of the mounting body is fixedly equipped with a power input connector, an optical fiber input connector, a waterproof switch button, and an indicator light panel, wherein the optical fiber input connector is used to connect an optical fiber cable. The other side of the mounting body is fixedly equipped with a power output connector and two N-KF radio frequency heads, wherein the power output connector is used to output power. An indicator light PCB board is fixedly mounted on the inner side of the mounting body at the position of the indicator light panel by an indicator light PCB board mounting bracket, and the indicator light PCB board is aligned with the position of the indicator light panel. The mounting body also includes a power adapter, a first optical fiber module, a second optical fiber module, a power output connector, a first power amplification module, and a second power amplification module.
[0004] Preferably, the power input connector, fiber optic input connector, power output connector, and both N-KF RF heads are equipped with waterproof covers.
[0005] Preferably, the power adapter is fixed inside the mounting body by a power adapter fixing block; the first power amplifier module and the second power amplifier module are directly fixed to the inner wall bottom plate of the mounting body; the first optical fiber module and the second optical fiber module are respectively fixed to the corresponding first power amplifier module and second power amplifier module by two optical fiber module fixing blocks.
[0006] Preferably, the power input connector is electrically connected to the input terminal of the power adapter, and the output terminal of the power adapter supplies power to the power output connector, the first optical fiber module, the second optical fiber module, the first power amplifier module, and the second power amplifier module, respectively.
[0007] Preferably, the N-KF RF head on the slave device is connected to the antenna end, and the N-KF RF head on the host device is connected to the control end.
[0008] The advantages of this invention compared to existing technologies are: Using fiber optic cables instead of conventional RF connection cables offers advantages such as smaller size, lower cost, and longer communication distance. Fiber optic cables have lower loss than RF feeders. While RF feeders have a limited operating distance of less than 50 meters, fiber optic cables offer actual transmission distances exceeding 200 meters. Fiber optic cables maintain consistent loss across all frequency bands, allowing for uniform loss across different cable lengths, which is beneficial for engineering design. RF feeders, on the other hand, exhibit varying losses across different frequency bands, making it impossible to accommodate multiple application frequency bands during engineering construction by using different cable lengths. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0010] Figure 2 This is a schematic diagram of the main installation structure of this utility model.
[0011] Figure 3 This is a schematic diagram of the internal structure of the mounting body of this utility model.
[0012] Figure 4 This is a diagram showing the connection between the master and slave devices of this utility model.
[0013] In the diagram: 101-Top cover; 102-Power input connector; 103-Fiber optic input connector; 104-Mounting body; 105-Waterproof switch button; 106-Indicator light panel; 107-Power adapter; 108-First fiber optic module; 109-Second fiber optic module; 110-Power adapter fixing block; 111-Power output connector; 112-N-KF RF head; 113-First power amplifier module; 114-Second power amplifier module; 115-Fiber optic module fixing block; 116-Indicator light PCB board; 117-Indicator light PCB board mounting bracket; 118-Power cord; 119-Fiber optic cable; 2-Main unit; 3-Slave unit. Detailed Implementation
[0014] The following is in conjunction with the appendix Figures 1-4 The technical solution of this utility model will be further illustrated through specific implementation methods.
[0015] This utility model provides a multi-frequency radio frequency signal enhancer using optical fiber transmission, including a host 2 and a slave 3. Both the host 2 and the slave 3 include a mounting body 104. A top cover 101 is fixedly mounted on the mounting body 104. The top cover 101 and the mounting body 104 form a waterproof sealed space. A power input connector 102, an optical fiber input connector 103, a waterproof switch button 105, and an indicator light panel 106 are fixedly mounted on one side of the mounting body 104. The optical fiber input connector 103 is used to connect an optical fiber cable 119. The other side of the mounting body 104 is fixed with... The device is equipped with a power output connector 111 and two N-KF RF heads 112, wherein the power output connector 111 is used to output power. An indicator PCB board 116 is fixed to the inside of the mounting body 104 at the position of the indicator panel 106 via an indicator PCB board mounting bracket 117, with the indicator PCB board 116 aligned with the indicator panel 106. The mounting body 104 also houses a power adapter 107, a first fiber optic module 108, a second fiber optic module 109, a power output connector 111, a first power amplifier module 113, and a second power amplifier module 114. Waterproof covers can be installed on the power input connector 102, the fiber optic input connector 103, the power output connector 111, and the two N-KF RF heads 112. The power adapter 107 is fixed inside the mounting body 104 by the power adapter fixing block 110; the first power amplifier module 113 and the second power amplifier module 114 are directly fixed to the inner wall bottom plate of the mounting body 104; the first optical fiber module 108 and the second optical fiber module 109 are fixed to the corresponding first power amplifier module 113 and second power amplifier module 114 by two optical fiber module fixing blocks 115 respectively. The power input connector 102 is electrically connected to the input end of the power adapter 107, and the output end of the power adapter 107 supplies power to the power output connector 111, the first optical fiber module 108, the second optical fiber module 109, the first power amplifier module 113, and the second power amplifier module 114 respectively. The N-KF RF head 112 on the slave device 3 is connected to the antenna end, and the N-KF RF head 112 on the host device 2 is connected to the control end.
[0016] The host device 2 is the near-end device, and the slave device 3 is the far-end device. After the near-end device filters and amplifies the radio frequency signal, it modulates the signal into an optical signal through laser heads of different wavelengths and transmits it to the far-end device through fiber optic cable 119. The far-end device demodulates the optical signal into a radio frequency signal, and after classification, amplification, filtering and switching, it restores the original radio frequency signal to drive the antenna device at the end.
[0017] Both the near-end and far-end devices have optical link fault detection functions. When the optical fiber is not connected or the optical fiber is broken, the indicator panel 106 displays a fault alarm.
[0018] The fiber optic router is designed with a power supply conversion function. After the external power supply equipment supplies power to the near-end fiber optic router through the power input connector 102, the power output connector 111 on the near-end fiber optic router will supply power to the far-end fiber optic router through the power line 118. Finally, the power output connector 111 on the far-end fiber optic router can output power to other peripherals.
[0019] Sealant is applied to the connection points of the top cover 101, power input connector 102, fiber optic input connector 103, indicator light panel 106, waterproof switch button 105, power output connector 111, two N-KF RF heads 112, and the mounting body 104, giving the fiber optic receiver IP65 waterproof performance and enabling it to adapt to various outdoor environments. Rubber pads are also provided on the contact surfaces of the power adapter 107 and the mounting body 104, the first power amplifier module 113 and the second power amplifier module 114 and the mounting body 104, the first fiber optic module 108 and the fiber optic module fixing block 115, and the second fiber optic module 109 and the fiber optic module fixing block 115. These provide a buffer structure within the top cover 101 for the power adapter 107, the first fiber optic module 108, the second fiber optic module 109, the first power amplifier module 113, and the second power amplifier module 114, making them drop-resistant.
[0020] Replacing conventional RF connection cables with fiber optic cable 119 offers advantages such as smaller size, lower cost, and longer communication distance. Fiber optic cable has lower loss than RF feeder cable. While the maximum usable distance using RF feeder cable is less than 50 meters, the actual transmission distance using fiber optic cable exceeds 200 meters. Fiber optic cable 119 maintains consistent loss across all frequency bands, allowing for uniform loss across different bands even with varying cable lengths, facilitating engineering design. In contrast, RF feeder cable exhibits varying loss across different frequency bands, making it impossible to accommodate multiple application frequency bands during engineering construction by using different cable lengths.
Claims
1. A multi-frequency radio frequency signal enhancer using optical fiber transmission, comprising a host (2) and a slave (3), characterized in that: Both the host (2) and the slave (3) include a mounting body (104). A top cover (101) is fixedly mounted on the mounting body (104). The top cover (101) and the mounting body (104) form a sealed space for waterproofing. A power input connector (102), an optical fiber input connector (103), a waterproof switch button (105), and an indicator panel (106) are fixedly mounted on one side of the mounting body (104). The optical fiber input connector (103) is used to connect an optical fiber cable (119). A power output connector (111) and two N-KF radio frequency heads (112) are fixedly mounted on the other side of the mounting body (104). The power output connector (111) is used to output power. The indicator PCB board (116) is fixed to the inside of the mounting body (104) at the position of the indicator panel (106) by the indicator PCB board fixing bracket (117), and the indicator PCB board (116) is aligned with the position of the indicator panel (106); The main installation unit (104) also includes a power adapter (107), a first optical fiber module (108), a second optical fiber module (109), a power output connector (111), a first power amplifier module (113), and a second power amplifier module (114).
2. The multi-frequency radio frequency signal enhancer using optical fiber transmission according to claim 1, characterized in that: Waterproof caps can be provided on the power input connector (102), the fiber optic input connector (103), the power output connector (111), and the two N-KF RF heads (112).
3. The multi-frequency radio frequency signal enhancer using optical fiber transmission according to claim 2, characterized in that: The power adapter (107) is fixed inside the mounting body (104) by the power adapter fixing block (110); the first power amplifier module (113) and the second power amplifier module (114) are directly fixed on the inner wall bottom plate of the mounting body (104); the first optical fiber module (108) and the second optical fiber module (109) are fixed on the corresponding first power amplifier module (113) and second power amplifier module (114) by two optical fiber module fixing blocks (115).
4. A multi-frequency radio frequency signal enhancer using optical fiber transmission according to claim 3, characterized in that: The power input connector (102) is electrically connected to the input terminal of the power adapter (107), and the output terminal of the power adapter (107) supplies power to the power output connector (111), the first optical fiber module (108), the second optical fiber module (109), the first power amplifier module (113), and the second power amplifier module (114), respectively.
5. A multi-frequency radio frequency signal enhancer using optical fiber transmission according to claim 4, characterized in that: The N-KF RF head (112) on the slave device (3) is connected to the antenna end, and the N-KF RF head (112) on the host device (2) is connected to the control end.