A radio frequency integrated device for KU band satellite communication

Abstract

The utility model discloses a kind of radio frequency integration devices for KU waveband satellite communication.The device includes shell, the outside of shell is equipped with multiple radiating fins, and its one end outside is equipped with power supply and reference signal connector, input interface and output interface, the inside of shell is equipped with duplexer, frequency down converter and power amplifier circuit board, power amplifier, frequency down converter, power main control board and frequency up converter, power amplifier and frequency down converter are arranged in the inside of power supply and reference signal connector, frequency down converter and power amplifier circuit board are arranged in the inner end side of power amplifier and frequency down converter, power main control board and frequency up converter are arranged in the one end away from power supply and reference signal connector, the middle part of shell is fixed with waveguide coaxial conversion assembly.The utility model is integrated by multiple modules, waveguide direct connection or short cable connection is used between internal modules, reduces transmission loss, and improves the signal quality of transceiver link.

Description

Technical Field

[0001] This utility model relates to the technical field of integrated radio frequency devices for KU-band satellite communication, and specifically to an integrated radio frequency device for KU-band satellite communication. Background Technology

[0002] With the rapid development of satellite communication technology, the requirements for miniaturization, portability, and integration of ground terminal equipment are becoming increasingly stringent. Traditional Ku-band satellite communication terminals typically consist of separate up-conversion power amplifiers (BUCs) and low-noise down-converters (LNBs), each connected to the antenna feed via waveguides or cables. This split structure has the following disadvantages: 1. Large size and weight: The independent modules increase the overall size and weight of the system, making it inconvenient to carry and move for installation.

[0003] 2. Complex connection: It requires additional RF cables and waveguide connections, which increases system loss and potential failure points.

[0004] 3. Dispersed heat dissipation design: Each module dissipates heat independently, making it impossible to utilize the overall structure for unified heat management. Furthermore, traditional air cooling is prone to introducing dust and moisture.

[0005] 4. Low protection level: The sealing of the split-type connection is more difficult, making it difficult to adapt to harsh outdoor environments.

[0006] Therefore, designing a radio frequency integrated device that highly integrates transceiver functions, has efficient heat dissipation and good protection performance is an important direction for the development of satellite communication terminals. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing an integrated radio frequency device for KU-band satellite communication.

[0008] To achieve the above objectives, this utility model provides an integrated radio frequency device for KU-band satellite communication, comprising a housing, with multiple heat sinks on the outer side of the housing, and a power supply and reference signal connector, an input interface, and an output interface on one end of the housing. Inside the housing are a duplexer, a downconverter, a power amplifier circuit board, a power amplifier, a downconverter, a power supply main control board, and an upconverter. The power amplifier and downconverter are arranged side-by-side inside the power supply and reference signal connector. The downconverter and power amplifier circuit board are located on one side of the inner end of the power amplifier and downconverter. The power supply main control board and upconverter are located at the end away from the power supply and reference signal connector. A waveguide coaxial converter assembly is fixed in the middle of the housing, and the duplexer is located above the power amplifier, downconverter, and waveguide coaxial converter assembly.

[0009] Furthermore, the housing includes a base and a cover plate bolted to the upper side of the base, a sealing ring is provided between the base and the cover plate, the power supply and reference signal connector, the input interface and the output interface are all located at one end of the base, and the heat sink is located on the outer side of the base.

[0010] Furthermore, the waveguide coaxial conversion assembly includes a main body, a number of VSWR screws are provided on the side of the main body, an antenna fixing flange is provided at the lower end of the main body, and a coaxial probe is provided in the middle of the main body.

[0011] Furthermore, the outer dimensions of the housing are 246mm×97mm×23mm, the height of the heat sink is designed to be 17mm, the spacing between adjacent heat sinks is 2mm, and the depth of the heat sink is 5mm.

[0012] Furthermore, the input and output interfaces are symmetrically arranged on both sides of the power supply and reference signal connectors, and both are SMA connectors.

[0013] Furthermore, the bottom of the housing is provided with a fixed flange, and the top of the waveguide coaxial conversion assembly is bolted to the fixed flange.

[0014] Furthermore, the base 12 is an aluminum alloy base.

[0015] Beneficial effects: This utility model utilizes a high-density heat sink integrally formed from an aluminum alloy base, which can achieve efficient heat dissipation of high-power devices without a fan, thus improving the reliability of the system; the sealed snap-fit ​​design of the cover plate and the base provides excellent dustproof and waterproof performance, making it suitable for outdoor operation; by integrating multiple modules into one unit, and using waveguide direct connection or short cable connection between internal modules, transmission loss is reduced and the signal quality of the transceiver link is improved. Attached Figure Description

[0016] Figure 1 This is an exploded structural diagram of an integrated radio frequency device used for KU-band satellite communication; Figure 2 This is a schematic diagram of the internal structure of an integrated radio frequency device used for KU-band satellite communication; Figure 3 This is a schematic diagram of the waveguide coaxial converter assembly according to an embodiment of the present invention. Detailed Implementation

[0017] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented under the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0018] like Figures 1 to 3 As shown, this embodiment of the present invention provides an integrated radio frequency device for KU-band satellite communication, including a housing. Multiple heat sinks 16 are provided on the outer side of the housing, preferably evenly distributed on the side of the housing. The heat sinks 16 increase the contact area between the housing and the air, effectively dissipating heat generated by heat sources such as the power amplifier 5 inside the housing into the environment. A power and reference signal connector 8, an input interface 7, and an output interface 9 are provided on one end of the housing. Inside the housing are a duplexer, a downconverter, a power amplifier circuit board 4, a power amplifier 5, a downconverter 6, a power supply main control board 13, and an upconverter 14. The duplexer specifically includes a duplexer main structure 3 and a duplexer cover plate 2 bolted to the upper side of the duplexer main structure 3. The power amplifier 5 and the downconverter 6 are arranged side-by-side inside the power and reference signal connector 8. The downconverter and power amplifier circuit board 4 is located on one side of the inner end of the power amplifier 5 and the downconverter 6, used to control the operation of the power amplifier 5 and the downconverter 6. The power control board 13 and the up-converter 14 are located at the end away from the power supply and reference signal connector 8. A waveguide coaxial converter 10 is fixed in the middle of the housing, and a duplexer is located on the upper side of the power amplifier 5, the down-converter 6, and the waveguide coaxial converter 10.

[0019] The housing of this embodiment includes a base 12 and a cover plate 1. The cover plate 1 is bolted to the base 12. A sealing ring is provided between the base 12 and the cover plate 1, providing good dustproof and waterproof functions, equivalent to a fully sealed shell. The power supply and reference signal connector 8, input interface 7, and output interface 9 are all located at one end of the base 12, and the heat sink is located on the outer side of the base 12. The base 12 is preferably an aluminum alloy base.

[0020] The aforementioned waveguide coaxial converter assembly 10 includes a main body 101. Several VSWR screws 102 are provided on the side of the main body 101. An antenna mounting flange 103 is provided at the lower end of the main body 101, and a coaxial probe 104 is provided in the middle of the main body 101. The antenna mounting flange 103 is used to fix the lower end of the antenna, and the coaxial probe 104 is connected to the antenna. To facilitate fixing the waveguide coaxial converter assembly 10, a fixing flange 11 is provided at the bottom of the housing, and the top end of the waveguide coaxial converter assembly 10 is bolted to the fixing flange 11.

[0021] The outer dimensions of the housing in this embodiment of the utility model are 246mm × 97mm × 23mm. The height of the heat sink 16 is designed to be 17mm, the spacing between adjacent heat sinks is 2mm, and the depth of the heat sink is 5mm. The heat sink 16 and the base 12 are integrally die-cast or CNC machined from aluminum alloy.

[0022] The aforementioned input interface 7 and output interface 9 are symmetrically arranged on both sides of the power supply and reference signal connector 8, and both are SMA connectors. The aforementioned upconverter 14 is also equipped with an SMA connector 15 for data transmission.

[0023] Working principle: Transmission workflow: The external intermediate frequency (IF) signal enters the device through the input port 7 located on the side wall of the base 12. The signal is transmitted to the SMA connector 15 of the upconverter 14 via an internal feeder. The upconverter 14 upconverts the IF signal to a radio frequency (RF) signal of 13.75-14.5 GHz. This RF signal is transmitted to the power amplifier 5 via a cable. The amplified high-power signal is directly coupled into the transmit input of the duplexer through the rectangular waveguide port at its output end.

[0024] Reception Workflow: The downlink signal (10.7-12.75GHz) from the satellite is received by the antenna and enters the common terminal of the duplexer. The downlink signal passes through the internal filtering channel of the duplexer, isolating the received signal from the transmitted signal, and is then transmitted to the receive output terminal of the duplexer. This receive output terminal is directly connected to the downconverter 6 via a WR75 rectangular waveguide port. The downconverter 6 performs low-noise amplification on the weak received signal, and the amplified signal enters the downconverter for downconversion processing. The processed intermediate frequency signal is then connected to the output interface 9 of the base 12 via a cable and output to the backend equipment.

[0025] Power Supply and Feeding Interface: The common terminal of the duplexer at the bottom of the device is designed with a WR75 standard waveguide port. A waveguide-coaxial converter 10 is installed here, which converts the waveguide transmission mode to the coaxial transmission mode, directly feeding or receiving electromagnetic waves for the antenna. The power supply and reference signal connector 8 is located between the input interface 7 and the output interface 9, providing 13V or 18V DC power to the main power control board 13 within the device, and providing a high-precision 10MHz reference clock signal to the up-converter 14 and down-converter 6. The main power control board 13 further supplies power to each module.

[0026] The above description is merely a preferred embodiment of this utility model. It should be noted that for those skilled in the art, other parts not specifically described are existing technology or common knowledge. Several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A radio frequency integrated device for Ku-band satellite communication, characterized in that, The device includes a housing with multiple heat sinks (16) on its outer side and a power and reference signal connector (8), an input interface (7) and an output interface (9) on one side of its outer side. Inside the housing are a duplexer, a downconverter and a power amplifier circuit board (4), a power amplifier (5), a downconverter (6), a power main control board (13) and an upconverter (14). The power amplifier (5) and the downconverter (6) are arranged side by side inside the power and reference signal connector (8). The downconverter and the power amplifier circuit board (4) are arranged on one side of the inner end of the power amplifier (5) and the downconverter (6). The power main control board (13) and the upconverter (14) are arranged at the end away from the power and reference signal connector (8). A waveguide coaxial converter assembly (10) is fixed in the middle of the housing. The duplexer is arranged on the upper side of the power amplifier (5), the downconverter (6) and the waveguide coaxial converter assembly (10).

2. The radio frequency integrated device for Ku-band satellite communication according to claim 1, characterized in that, The housing includes a base (12) and a cover plate (1) bolted to the upper side of the base (12). A sealing ring is provided between the base (12) and the cover plate (1). The power supply and reference signal connector (8), input interface (7) and output interface (9) are all located at one end of the base (12). The heat sink is located on the outside of the base (12).

3. The radio frequency integrated device for Ku-band satellite communication according to claim 1, characterized in that, The waveguide coaxial conversion assembly (10) includes a main body (101), the side of the main body (101) is provided with a number of standing wave ratio screws (102), the lower end of the main body (101) is provided with an antenna fixing flange (103), and the middle part of the main body (101) is provided with a coaxial probe (104).

4. The radio frequency integrated device for Ku-band satellite communication according to claim 1, characterized in that, The outer dimensions of the housing are 246mm×97mm×23mm, the height of the heat sink (16) is designed to be 17mm, the spacing between adjacent heat sinks is 2mm, and the depth of the heat sink is 5mm.

5. The radio frequency integrated device for Ku-band satellite communication according to claim 1, characterized in that, The input interface (7) and output interface (9) are symmetrically arranged on both sides of the power supply and reference signal connector (8), and both are SMA connectors.

6. The radio frequency integrated device for Ku-band satellite communication according to claim 1, characterized in that, The bottom of the housing is provided with a fixed flange (11), and the top of the waveguide coaxial conversion assembly (10) is bolted to the fixed flange (11).

7. The radio frequency integrated device for Ku-band satellite communication according to claim 1, characterized in that, The base (12) is an aluminum alloy base.

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