CN220306512U - Multi-way switch capable of being connected in series and circuit - Google Patents

Abstract

The utility model discloses a multi-way switch capable of being connected in series and a circuit thereof, 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 control chip controls channel switching of the 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 output end is provided with a plurality of control chips and is connected with the control chip, and independent power supply voltage control, detection and channel processing transmission circuits are adopted; the multi-user can share one LNB and antenna device, and the output ports can be expanded in series according to the number of users, so that the multi-user wireless communication system is simple to install, does not need an external power supply, and is convenient to install. The advantages of reducing purchasing and installation cost of users, purifying installation environment and the like are achieved.

Description

Multi-way switch capable of being connected in series and circuit

Technical Field

The utility model relates to the field of multi-way switches, in particular to a multi-way switch capable of being connected in series and a circuit.

Background

The LNB, also called a tuner (Low Noise Block), is a Low Noise down converter, and functions to amplify and down convert a satellite signal transmitted from a feed source, convert a Ku or C band signal into an L band, and transmit the L band signal to a satellite receiver via a coaxial cable. The LNB, also called a tuner (Low Noise Block), is a Low Noise down converter, and functions to amplify and down convert a satellite signal transmitted from a feed source, convert a Ku or C band signal into an L band, and transmit the L band signal to a satellite receiver via a coaxial cable.

Because the output ports of the tuner LNBF in the market are limited, more satellite receiving users cannot share one LNB and one antenna device; according to market demands, a multi-way switch and a circuit capable of being connected in series are provided, a plurality of users can share one LNB and antenna device, and output ports can be connected in series and expanded according to the number of users.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a multi-way switch and a circuit capable of being connected in series, which can solve the technical problems that the output port of a tuner LNBF is limited, and more satellite receiving users cannot share one LNB and antenna equipment.

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

the control chip controls channel switching of the 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 output end is connected with the control chip and adopts an independent power supply voltage control, detection and channel processing transmission circuit.

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

As a preferable technical scheme of the utility model, the vertical polarization input connector is a direct-current voltage 13V, and the horizontal polarization input structure is a direct-current voltage 18V.

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 preferred embodiment of the present utility model, the output is connected to a receiver.

A circuit is provided with a winding inductor in a multi-way switch, and the winding inductor is used for filtering interference and channel isolation.

As a preferred technical solution of the present utility model, the circuit further comprises a circuit coupling line for the input terminal and the control chip.

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

1. the multi-user can share one LNB and antenna device, and the output ports can be expanded in series according to the number of users, so that the multi-user wireless communication system has the advantages of simplicity in installation, no need of an external power supply, convenience in installation, reduction in user purchase and installation cost, purification of installation environment and the like;

2. the design of the two-in and 16-out multi-output design is designed, and each group of circuits adopts an independent switch control circuit (circuit devices without ports do not work) so that the circuit has low power consumption, simple design and more stable performance.

Drawings

FIG. 1 is an organization chart of a multi-way switch and a circuit of the utility model;

FIG. 2 is a schematic diagram illustrating the use of the product of the present utility model;

fig. 3 is a circuit diagram of the product of the 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, the present utility model provides a serial-connection type multi-way switch and circuit, wherein the radio frequency input frequency of the satellite frequency demultiplier is 10.700GHz-12.750GHz, the local oscillation frequency is Low band_9.750GHz and high_band_10.600GHz, and the intermediate frequency output is Low Band if=950 MHz-1950MHz and High Band if=1100 MHz-2150MHz according to a communication protocol (radio frequency-local oscillation frequency=intermediate frequency), which is called as a Universal. The C-band super-heterodyne is (local oscillator frequency-radio frequency=intermediate frequency) intermediate frequency output: 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. While V, H signal source input is coupled to another set of ports via a microstrip as input at the time of concatenation.

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

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

As shown in fig. 2, 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 950 MHz-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. 3, the main signal source of the input transmission is directly connected by coupling, amplifying to the serial end, using a signal connection line.

Satellite signals are accessed through the V/H ports, and are respectively transmitted to four groups of channel transmission switching channels in an equalizing way 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 signal input source and the power circuit are transmitted to the tail end port of the structure by the transmission line. For external serial connection.

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 (7)

1. A multi-way switch capable of being connected in series, which is characterized in that: the multi-way switch 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;

the control chip controls channel switching of the 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 output end is provided with a plurality of control chips and is connected with the control chip, and independent power supply voltage control, detection and channel processing transmission circuits are adopted.

2. The serially-connectable multi-way switch of claim 1, wherein: each group of input terminals is divided into a vertical polarization input connector and a horizontal polarization input connector.

3. The serially-connectable multi-way switch of claim 2, wherein: the vertical polarization input connector is of direct-current voltage 13V, and the horizontal polarization input structure is of direct-current voltage 18V.

4. The serially-connectable multi-way switch 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 serially-connectable multi-way switch of claim 1, wherein: the output terminal is connected with the receiver.

6. A circuit comprising a serially connectable multi-way switch as claimed in any one of claims 1 to 5, characterized in that: and a winding inductor is arranged in the multi-way switch and is used for filtering interference and channel isolation.

7. The circuit of claim 6, wherein: the circuit also comprises a circuit coupling line for an input terminal and a control chip.