CN220139612U

CN220139612U - Multi-output satellite signal switch control and circuit

Info

Publication number: CN220139612U
Application number: CN202321453813.7U
Authority: CN
Inventors: 叶远龙
Original assignee: Zhuhai Pusisaite Technology Co ltd
Current assignee: Zhuhai Pusisaite Technology Co ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2023-12-05
Anticipated expiration: 2033-06-08

Abstract

The utility model discloses a multi-output satellite signal switch control and circuit, which comprises input ends, wherein the input ends are arranged at two ends of a switch device, and each group of input ends are provided with two connectors for inputting signals with different voltages; the signal identification transmission chip controls channel switching of an input end according to the voltage of the input end and divides the input signal into a plurality of groups of output signals for balanced output; the receiver is connected with the signal identification transmission chip through a signal wire; the multi-user LNB and antenna device sharing method has the advantages of being capable of providing multi-user to share one LNB and antenna device, reducing purchasing and installing cost of users, purifying installation environment and the like, and meanwhile, a plurality of users can share the output radio frequency signal of the same high-frequency head LNBF.

Description

Multi-output satellite signal switch control and circuit

Technical Field

The present utility model relates to the field of multiple-output satellite signal switches, and more particularly, to a multiple-output satellite signal switch control and circuit.

Background

LNB (low noise block downconverter) is a low-signal down-conversion amplifier, which consists of an LNB and an LNC, which consists of a mixer and a local oscillator. LNBs can be generally classified into c-frequency LNB (3.7 GHz-4.2 GHz) and ku-frequency LNBs (10.7 GHz-12.75 GHz). Because the satellite signal is weak before reaching the antenna and the higher the frequency of the coaxial cable transmission, the greater the signal loss, the LNB is required to amplify without degrading the signal-to-noise ratio too much. The LNB work flow is to amplify the satellite high frequency signal, then use the local oscillation circuit to convert the high frequency signal to the intermediate frequency 950MHz-2150MHz (the intermediate frequency range is determined according to the LNB kind) and amplify again, so as to be beneficial to the transmission of the coaxial cable and the demodulation and the work of the satellite receiver.

With the continuous development of satellite television technology, the application of each country in the satellite television field is becoming popular, and the requirement that more users can use the satellite television has to be provided under the existing receiving system is generated, but because the output port of the tuner LNBF on the market is limited, more satellite receiving users cannot share one LNB and antenna device; the output radio frequency signal of the tuner LNBF is transmitted to the indoor satellite television receiver at a short distance of about 30 meters to 100 meters, and the transmission of the signal at the distance depends on the intervention of a coaxial cable, which is only the basic setting for a single user generally, and cannot enable a plurality of users to share the output radio frequency signal of the same tuner LNBF; according to market demands, a multi-output satellite signal switch control and circuit is provided, and can provide a multi-user to share one LNB and antenna device.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a multi-output satellite signal switch control and circuit, which can solve the technical problems that the output ports of a tuner LNBF are limited, more satellite receiving users cannot share one LNB and antenna equipment, and the output radio frequency signals of the tuner LNBF depend on the intervention of coaxial cables between the indoor satellite television receivers, and the utility model is only generally aimed at the basic setting of a single user, so that a plurality of users cannot share the output radio frequency signals of the same tuner LNBF.

In order to solve the technical problems, the utility model provides the following technical scheme: the multi-output satellite signal switch control and circuit comprises input ends, wherein the input ends are arranged at two ends of a switch device, and each group of input ends are provided with two connectors for inputting signals with different voltages;

the signal identification transmission chip controls channel switching of an input end according to the voltage of the input end and divides the input signal into a plurality of groups of output signals for balanced output;

the receiver is connected with the signal identification transmission chip through a signal wire.

As a preferred embodiment of the present utility model, each group of input terminals is divided into a vertically polarized connector and a horizontally polarized connector.

As a preferable technical scheme of the utility model, the voltage passed by the vertical polarization joint is 13V dc voltage, and the voltage passed by the horizontal polarization joint is 18V dc voltage.

As a preferred embodiment of the present utility model, one set of input terminals is used for connecting an input signal, and the other set of input terminals is used as a signal output source to connect the input terminals of another multiway switch.

As a preferable technical scheme of the utility model, the utility model further comprises an output end arranged on the switch control, and the output end is connected with the receiver through a signal wire.

A circuit comprises a multi-output satellite signal switch control, wherein a winding inductor is arranged in the switch and used for filtering interference and channel isolation.

As a preferred embodiment of the present utility model, the circuit is etched on a circuit board of the switch controller.

Compared with the prior art, the utility model has the following beneficial effects:

1. the advantages of sharing one LNB and one antenna device by multiple users, reducing purchasing and installing cost of users, purifying installation environment and the like can be provided;

2. the multi-way switch is added or the tuner LNBF is designed to be in a multi-output mode so that a plurality of users can share the output radio frequency signal of the same tuner LNBF.

Drawings

FIG. 1 is a diagram of a multi-way switch according to the present utility model;

FIG. 2 is a schematic diagram of a tuner LNBF multiple output configuration in accordance with the present utility model;

FIG. 3 is an organizational chart of the circuit of the present utility model;

fig. 4 is a schematic diagram of the operation of the product of the present utility model.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model.

Examples

Referring to fig. 1 and 2, the present utility model provides a multi-output satellite signal switch control and circuit, wherein the radio frequency input frequency of the satellite frequency demultiplier is 10.700GHz-12.750GHz, the local oscillation frequencies are lowband_9.750GHz and high_band_10.600GHz, and the intermediate frequency output according to the communication protocol (radio frequency-local oscillation frequency=intermediate frequency) is LowBand if=950 MHz-1950MHz, highBandIF =1100 MHz-2150MHz, and the protocol is called Universal. The C-band super-heterodyne is (local oscillator frequency-radio frequency=intermediate frequency) and the intermediate frequency output is: 950MHz-1450MHz, 1150MHz-2050MHz; furthermore, satellite signal transmission is mainly performed in a horizontal and vertical mode; the protocol designs a signal channel system (950 MHz-2150 MHz) applicable to the full frequency band and a corresponding voltage control system; the design is divided into: VL, HL, two band states: and all ports are applicable to full-frequency band signals, so that each user terminal can receive satellite television program pictures of the full-frequency terminal.

VL: tuner = vertical polarization, receiver drive mode = dc voltage 13V;

HL: tuner=horizontal polarization, receiver driving mode=dc voltage 18V.

As shown in fig. 3, the user terminal: 1. when the receiver outputs command 13V, the voltage control is divided into two groups: a group of voltage-controlled identification pins of the signal identification transmission chip ML7405 are input with control voltage by the low voltage detection system, and channel selection is carried out on the voltage-controlled identification pins. A second group of high-low voltage control ICs wound through the power magnetic core; B3-2B performs voltage switching control and outputs the voltage to the LNB to provide the required direct current voltage; meanwhile, satellite signals with the bandwidth of 950MHz-2150MHz are input through a VL channel, distributed by a microstrip power divider and then input to a channel input pin of the ML 7405. After the internal channel system is processed, the processed signal is input to the integrated amplification UA2716 for amplification and output to the user terminal to form a voltage and signal common path.

2. When the receiver outputs the command 18V, the working mode is the same (as the working principle of 13V)

3. Each output user terminal adopts independent power supply voltage control, detection and channel processing transmission circuits. Therefore, the voltage switching and the channel transmission are not interfered with each other, and meanwhile, other ports cannot work simultaneously due to the adoption of the high-low voltage control chip, so that the aim of reducing the power consumption of the whole machine is fulfilled.

As shown in fig. 4, satellite signals are accessed through V/H ports, and are respectively transmitted to four groups of channel transmission switching channels in an equalizing manner through independent microstrip coupling transmission lines, so that independent 16 channel output and voltage control ports are constructed.

Port 1: the control voltage is separated into two paths for control after being isolated and filtered by the microstrip line: a. the transmission chip is switched by the channels provided for IC2 and ML7405 through divider resistors R7 and R8. b. Interference is filtered out and a channel is isolated through an L1 power winding inductance. After filtering by C40, four paths are used for supplying power: a. and providing working voltage for the 1 st pin of the U1 voltage switching control chip. C36 and D14 provide internal voltage stabilization for the U1 chip. The R35 and the D22 provide high-low voltage switching reference voltages for the U1. b. The main voltage is provided for Q1 and Q5, and the working voltage is provided for the chip IC2 through D1 to the voltage stabilizing module IC 1. d. After passing through R23 voltage dividing resistor, the voltage stabilizing circuit composed of D15, C44 and R24 provides working voltage for Q9 UA2716 amplifying IC.

When the input receiving command of the user terminal is V/13V, the 6 th pin output voltage of the U1 control IC drives the Q5_8550 power triode through R15 and then is isolated and output to the V polarization input terminal through the D6 diode. Thereby providing a control voltage for the LNB. And after the LNB is operated, the signal will be coupled from the V-port to the C6 to pin 4 of the chip IC2 via the microstrip coupling line. R1 and C1 play a role in balancing transmission matching and signal distribution.

When the input receiving command of the user terminal is H/18V, the 7 th pin output voltage of the U1 control IC drives the Q1_8550 power triode through R16 and then outputs the output voltage to the H polarization input terminal through the D7 isolation diode. Thereby providing a control voltage for the LNB. And after the LNB is operated, the signal will be coupled from the V-port to the 6 th pin of the chip IC2 via the microstrip coupling line, C5. R4, C4 act as a circuit for transmission matching and signal distribution balancing.

The voltage dividing circuit composed of R7, R8 and C13 provides high and low voltages for the chip IC 2. For selecting either the V signal output, or the H signal output. The selected signal is input to the signal amplification ic_q9 via the coupling capacitors C15, C18. The signal is amplified, and the voltage of the amplifying IC is provided by the D15, C44C, R, R24 voltage stabilizing circuits. The amplified desired signal is output via coupling capacitors C48, C52.

The voltage of the IC2 chip is defined by: the voltage stabilizing circuits consisting of IC1, D3, C10, C11 and C12 are provided.

The other ports operate in the same manner.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A multiple-output satellite signal switch control, characterized by: the satellite signal switch control comprises

The input ends are arranged at two ends of the switch device, and each group of input ends are provided with two connectors for inputting signals with different voltages;

2. The multi-output satellite signal switch control of claim 1, wherein: each group of input terminals is divided into a vertical polarization joint and a horizontal polarization joint.

3. The multi-output satellite signal switch control of claim 2, wherein: the voltage passed by the vertical polarization joint is 13V direct current voltage, and the voltage passed by the horizontal polarization joint is 18V direct current voltage.

4. The multi-output satellite signal switch control of claim 1, wherein: one group of input ends is used for connecting input signals, and the other group of input ends is used as a signal output source to be connected with the input ends of the other multi-way switch.

5. The multi-output satellite signal switch control of claim 1, wherein: the device also comprises an output end arranged on the switch control, and the output end is connected with the receiver through a signal line.

6. A circuit comprising a multiple-output satellite signal switch control as claimed in any one of claims 1 to 5, wherein: and a winding inductor is arranged in the switch and is used for filtering interference and channel isolation.

7. The circuit of claim 6, wherein: the circuit is etched on a circuit board of the switch controller.