A three-way DCSS output and one-way legacy output dual-polarized KU band high-frequency head

Abstract

The utility model discloses a kind of 3-way DCSS output and 1-way Legacy output dual-polarization KU waveband high frequency head, it is related to KU waveband high frequency head technical field. Including main body, resonant cover, circuit board, F type connector and shell and the like components. Circuit board with integrated horizontal and vertical polarized front-stage low-noise amplifier, analog signal rear-stage amplification, PLL phase-locked loop frequency reduction and DCSS processing function is equipped in main body, horizontal and vertical polarized signal is processed after amplification in two ways: one way is output 950-2150MHz analog signal by PLL frequency reduction, another way is output 30 U (750-2350MHz) digital signal after digital processing by DCSS integrated circuit. The high frequency head has innovatively integrated 3-way DCSS digital output and 1-way Legacy analog output, adopts single cable transmission multi-channel signal, both meet modern digital satellite receiving demand, and compatible traditional analog equipment. Its aluminum alloy main body and resonant cover structure improve heat dissipation and protection level, especially suitable for multi-user satellite receiving scene, significantly reduce wiring cost and complexity.

Description

Technical Field

[0001] This utility model relates to the field of KU-band LNB technology, specifically a dual-polarized KU-band LNB with 3-channel DCSS output and 1-channel Legacy output. Background Technology

[0002] Currently, traditional satellite LNBs typically employ single-polarized or dual-polarized analog signal output, supporting only a single user or signal distribution via multiple cables. This results in complex wiring, high costs, and an inability to meet the needs of multiple users simultaneously receiving different programs. With the development of satellite communication technology, digital satellite receiving systems are becoming increasingly common. However, existing LNBs still have significant shortcomings in digital signal processing capabilities, multi-user compatibility, and signal transmission efficiency. For example, traditional LNBs require separate coaxial cables for each receiver, leading to cumbersome installation and material waste. While some digital LNBs support multiple outputs, they lack compatibility with traditional analog signals, limiting the flexibility of user equipment. Furthermore, existing LNBs still have room for improvement in signal processing bandwidth, noise suppression, and multi-band output capabilities, making it difficult to meet the high-density, high-efficiency signal transmission requirements of modern satellite communication systems. Therefore, those skilled in the art have proposed a dual-polarized KU-band LNB with three DCSS outputs and one Legacy output to address the problems mentioned above. Utility Model Content

[0003] The purpose of this invention is to provide a dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output.

[0006] As a further aspect of this utility model, it includes:

[0007] The main body contains a circuit board. The main body is connected to a resonant cover, which works with the main body to fix and press the circuit board. Waveguide ports are provided on the side of the main body.

[0008] The outer cover plate has serrated edges and is fixedly connected to the main body;

[0009] The F-head is fixedly connected to the main body, and the pin core of the F-head is soldered to the circuit board.

[0010] The load, with an impedance of 75Ω, is set at the DCSS output port for impedance matching of unused ports.

[0011] The outer shell is attached to the outside of the main body by clips and serves a protective function.

[0012] As a further improvement of this utility model: screw holes are provided inside the main body, the circuit board is set inside the main body, and the resonant cover is fixed and pressed together with the main body by screws.

[0013] As a further improvement of this utility model: the main body is fixedly connected to an outer cover plate, which is made of galvanized sheet metal.

[0014] As a further improvement of this utility model: the main body and the resonant cover are made of aluminum, the outer shell of the F-head and the load is made of aluminum alloy, and the interior is made of PP plastic and metal spring sheet material.

[0015] As a further improvement of this utility model: the circuit board is provided with a horizontally polarized pre-amplifier, a vertically polarized pre-amplifier, an analog signal post-amplifier, a PLL phase-locked loop frequency reduction integrated circuit, and a DCSS integrated circuit.

[0016] The horizontally polarized preamplifier low-noise amplifier includes a horizontally polarized input, a FET1 RF amplifier circuit, and a FET3 RF amplifier circuit.

[0017] The vertically polarized preamplifier low-noise amplifier includes a vertically polarized input, a FET2 RF amplifier circuit, and a FET4 RF amplifier circuit.

[0018] The analog signal post-stage low-noise amplifier includes a FET5 RF amplifier circuit and a FET6 RF amplifier circuit.

[0019] The PLL phase-locked loop down-frequency integrated circuit includes a U2PLL integrated IC;

[0020] The DCSS integrated circuit includes a U1DCSS integrated IC;

[0021] The horizontal polarization input is connected in sequence to the FET1 and FET3 RF amplifier circuits, forming two paths. One path is electrically connected to the FET5 RF amplifier circuit and the U2PLL integrated IC in sequence, and the other path is connected to the U1DCSS integrated IC in sequence. The vertical polarization input is connected in sequence to the FET2 and FET4 RF amplifier circuits, forming two paths. One path is electrically connected to the FET6 RF amplifier circuit and the U2PLL integrated IC in sequence, and the other path is connected to the U1DCSS integrated IC in sequence.

[0022] Compared with existing technologies, the advantages of this invention are as follows: This device integrates three DCSS digital signal processing outputs and one traditional Legacy analog output, which not only meets the needs of modern digital satellite reception but is also compatible with traditional analog equipment, significantly improving the adaptability and flexibility of user equipment; it achieves broadband signal digital processing through DCSS integrated circuits, supporting output of 30 user frequency bands, covering a frequency range of 750MHz-2350MHz, allowing multiple terminals to simultaneously receive different satellite programs, thus resolving the signal conflict problem among multiple users; this device adopts DCSS technology, requiring only one coaxial cable to transmit multiple signals, greatly reducing wiring costs and complexity, making it particularly suitable for multi-room scenarios such as homes and hotels, reducing installation and maintenance difficulty. The horizontal and vertical polarized dual-channel low-noise amplifiers (FET1-FET6) combined with PLL phase-locked loop frequency reduction technology ensure high stability of signal amplification and down-conversion, outputting 950MHz-2150MHz intermediate frequency signals, guaranteeing signal transmission quality. Attached Figure Description

[0023] Figure 1 This is an exploded view of the structure of a dual-polarized Ku-band LNB with 3 DCSS outputs and 1 Legacy output.

[0024] Figure 2 This is a circuit diagram of a circuit board in a dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output.

[0025] Figure 3 This is a front view of a dual-polarized KU-band LNB with 3 DCSS outputs and 1 Legacy output.

[0026] In the diagram: 1. Main body; 2. Circuit board; 3. Resonator cover; 4. Outer cover plate; 5. F-type connector; 6. Load; 7. Waveguide port; 8. Horizontally polarized preamplifier with low noise; 9. Vertically polarized preamplifier with low noise; 10. Analog signal postamplifier with low noise; 11. PLL phase-locked loop frequency reduction integrated circuit; 12. DCSS integrated circuit; 13. Housing. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Please see Figure 1-3 A dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output, comprising:

[0032] The main body 1 has a circuit board 2 inside it. The main body 1 is connected to a resonant cover 3. The resonant cover 3 cooperates with the main body 1 to fix and press the circuit board 2. The side of the main body 1 is provided with a waveguide port 7.

[0033] The outer cover plate 4 has serrated edges and is fixedly connected to the main body 1.

[0034] F-head 5 is fixedly connected to the main body 1, and the needle core end of F-head 5 is soldered to the circuit board 2;

[0035] Load 6, impedance 75Ω, is set at the DCSS output port for impedance matching of unused ports;

[0036] The outer shell 13 is attached to the outside of the main body 1 by means of a snap fastener, and serves a protective function.

[0037] The main body 1 has screw holes inside, the circuit board 2 is set inside the main body 1, and the resonant cover 3 is fixed and pressed together with the main body 1 by screws.

[0038] The main body 1 is fixedly connected to an outer cover plate 4, which is made of galvanized sheet metal.

[0039] The main body 1 and the resonator cover 3 are made of aluminum, the F-head 5 and the outer shell 13 of the load 6 are made of aluminum alloy, and the interior is made of PP plastic and metal spring sheet material.

[0040] Circuit board 2 includes a horizontally polarized preamplifier low-noise amplifier 8, a vertically polarized preamplifier low-noise amplifier 9, an analog signal post-amplifier low-noise amplifier 10, a PLL phase-locked loop down-conversion integrated circuit 11, and a DCSS integrated circuit 12.

[0041] The horizontally polarized preamplifier 8 includes a horizontally polarized input, a FET1 RF amplifier circuit, and a FET3 RF amplifier circuit.

[0042] The vertically polarized preamplifier 9 includes a vertically polarized input, a FET2 RF amplifier circuit, and a FET4 RF amplifier circuit.

[0043] The analog signal post-stage low-noise amplifier 10 includes a FET5 radio frequency amplifier circuit and a FET6 radio frequency amplifier circuit.

[0044] The PLL phase-locked loop down-frequency integrated circuit 11 includes a U2PLL integrated IC;

[0045] The DCSS integrated circuit 12 includes a U1DCSS integrated IC;

[0046] The horizontal polarization input is connected in sequence to the FET1 and FET3 RF amplifier circuits, forming two paths. One path is electrically connected to the FET5 RF amplifier circuit and the U2PLL integrated IC in sequence, and the other path is connected to the U1DCSS integrated IC in sequence. The vertical polarization input is connected in sequence to the FET2 and FET4 RF amplifier circuits, forming two paths. One path is electrically connected to the FET6 RF amplifier circuit and the U2PLL integrated IC in sequence, and the other path is connected to the U1DCSS integrated IC in sequence.

[0047] The horizontal polarization input and FET1 and FET3 RF amplifier circuits are connected in sequence to form two paths. One path is electrically connected to the FET5 RF amplifier circuit and the U2PLL integrated IC in sequence, downconverting the 10.7GHz-12.75GHz RF signal to 950MHz-2150MHz and outputting it through the F-head 5. The other path is connected to the U1DCSS integrated IC in sequence, downconverting the 10.7GHz-12.75GHz RF signal to 1350MHz-1850MHz. Then, through digital signal processing technology, the signals from multiple satellite transponders are selected, upconverted, and stacked, ultimately outputting 30 UBs with an output frequency range of 750MHz-2350MHz.

[0048] The vertical polarization input and FET2 and FET4 RF amplifier circuits are connected in sequence to form two paths. One path is electrically connected to the FET6 RF amplifier circuit and the U2PLL integrated IC in sequence, downconverting the 10.7GHz-12.75GHz RF signal to 950MHz-2150MHz and outputting it through F-head 5. The other path is connected to the U1DCSS integrated IC in sequence, downconverting the 10.7GHz-12.75GHz RF signal to 1350MHz-1850MHz. Then, through digital signal processing technology, the signals from multiple satellite transponders are selected, upconverted, and stacked, ultimately outputting 30 UBs with an output frequency range of 750MHz-2350MHz.

[0049] Working principle

[0050] The signal is input through waveguide port 7, and first undergoes low-noise amplification processing through horizontally polarized preamplifier and vertically polarized preamplifier. The output signal is split into two paths: one path is connected to the analog signal postamplifier, and then connected to the phase-locked loop frequency reduction integrated circuit, and output through F-head 5; the other path is connected to DCSSIC and output through F-head 5.

[0051] The pre-amplifier receives satellite signals from 10.7-12.75 GHz. After passing through horizontally polarized and vertically polarized low-noise amplifiers, the amplified signals are split into two paths. One path is provided to the PLL phase-locked loop down-conversion integrated circuit 11, which outputs an intermediate frequency (IF) signal of 950-2150 MHz. The other path is provided to the DCSSIC, which uses a fast wideband analog-to-digital converter to digitize the IF signal. Then, through digital signal processing technology, the signals from multiple satellite transponders are selected, up-converted, and stacked, packaging the signals into 30 UBs for output with an output frequency of 750 MHz-2350 MHz.

[0052] This product features three digital signal processing (DCSS) output ports and one traditional analog signal processing output port. This allows multiple users to share satellite signals via a single coaxial cable, enabling the transmission of signals from multiple users over a single cable. The analog signal processing utilizes a PLL (phase-locked loop) circuit for down-conversion, providing a high-quality intermediate frequency (IF) signal to the satellite receiver. This allows users to receive signals via DCSS while also being compatible with traditional reception methods. Traditional satellite signal transmission requires separate cabling for each receiver, while the DCSSLNB employs a single-cable solution, requiring only one coaxial cable to distribute satellite signals to multiple user terminals. This significantly reduces cabling workload and costs, making it particularly suitable for multi-room, multi-user home or commercial environments. This new LNB has 30 receiver plugs (UBs), supporting a large number of user terminals simultaneously receiving satellite signals, meeting the needs of multiple users watching different programs on different satellite receivers at the same time.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output, characterized in that, include: The main body contains a circuit board and is connected to a resonant cover. The resonant cover is used to fix and press the circuit board in place with the main body. Waveguide ports are provided on the side of the main body. The outer cover has serrated edges and is fixedly connected to the main body. The F-head is fixedly connected to the main body, and the pin tip of the F-head is soldered to the circuit board; the load, with an impedance of 75Ω, is set at the DCSS output port for impedance matching of unused ports; the outer shell is attached to the outside of the main body by clips for protection.

2. The dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output as described in claim 1, characterized in that, The main body has screw holes inside, the circuit board is set inside the main body, and the resonant cover is fixed and pressed together with the main body by screws.

3. The dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output as described in claim 1, characterized in that, The main body is fixedly connected to an outer cover plate, which is made of galvanized sheet metal.

4. The dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output as described in claim 1, characterized in that, The main body and resonator cover are made of aluminum, the F-head and load housing are made of aluminum alloy, and the interior is made of PP plastic and metal spring sheet material.

5. The dual-polarized Ku-band LNB with 3-channel DCSS output and 1-channel Legacy output as described in claim 1, characterized in that, The circuit board includes a horizontally polarized preamplifier, a vertically polarized preamplifier, an analog signal post-amplifier, a PLL phase-locked loop down-amplifier integrated circuit, and a DCSS integrated circuit. The horizontally polarized preamplifier includes a horizontally polarized input, a FET1 RF amplifier circuit, and a FET3 RF amplifier circuit. The vertically polarized preamplifier includes a vertically polarized input, a FET2 RF amplifier circuit, and a FET4 RF amplifier circuit. The analog signal post-amplifier includes a FET5 RF amplifier circuit and a FET6 RF amplifier circuit. The PLL down-amplifier integrated circuit includes a U2PLL integrated IC. The DCSS integrated circuit includes a U1DCSS integrated IC. The horizontal polarization input is connected in sequence to the FET1 and FET3 RF amplifier circuits, forming two paths. One path is electrically connected to the FET5 RF amplifier circuit and the U2PLL integrated IC in sequence, and the other path is connected to the U1DCSS integrated IC in sequence. The vertical polarization input is connected in sequence to the FET2 and FET4 RF amplifier circuits, forming two paths. One path is electrically connected to the FET6 RF amplifier circuit and the U2PLL integrated IC in sequence, and the other path is connected to the U1DCSS integrated IC in sequence.

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