CN204089953U - TV signal amplifiers - Google Patents
TV signal amplifiers Download PDFInfo
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- CN204089953U CN204089953U CN201420555510.0U CN201420555510U CN204089953U CN 204089953 U CN204089953 U CN 204089953U CN 201420555510 U CN201420555510 U CN 201420555510U CN 204089953 U CN204089953 U CN 204089953U
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Abstract
The utility model discloses a kind of TV signal amplifiers, comprise power transfer module, for converting+24V supply voltage to+12V line voltage distribution; Filtration module, connects tv signal input, for removing the ripple in the superfrequency radio wave signal of input input; Handover module, lotus root is connected to filtration module, with LTE switch, stirs LTE switch, changes bandwidth, realizes 4G conversion; Amplification module, lotus root is connected to handover module, for superfrequency radio wave signal is carried out signal amplification.
Description
Technical field
The utility model relates to a kind of amplifier, and more particularly, it relates to a kind of TV signal amplifiers that can realize 4G and switch.
Background technology
TV signal amplifiers be for wired or wireless TV signal signal amplify and improve amplifying device, can be used for TV, computer or carry out multiple branches distribute use.
Forth generation mobile phone mobile communication standard, refers to forth generation mobile communication technology, and foreign language is abridged: 4G.This technology comprises TD-LTE and FDD-LTE two kinds of standards.4G integrates 3G and WLAN, and can quick data transfering, high-quality, audio frequency, video and image etc.4G can download with the speed of more than 100Mbps, the family expenses broadband A/D SL(4 million than current) fast 20 times, and the requirement of nearly all user for wireless service can be met.In addition, 4G can not have chlamydate place to dispose at DSL and Cable Modem, and then expands to whole distract.Clearly, 4G has incomparable superiority.
Along with growth in the living standard, the progress of scientific and technological level, 4G slowly enters into daily life, and television set is as the requisite electrical equipment of the daily amusement of people, and the step that also slowly followed by 4G is constantly brought forth new ideas.And the hinge that TV signal amplifiers is changed as TV signal, be requisite element in television set, it must walk the front end in television set industry.But, also there is not a TV signal amplifiers that can realize 4G and switch on the market, the TV signal amplifiers that 4G switches can be realized when needed become an important problem so how to meet people.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of TV signal amplifiers, with LTE switch, stirs LTE switch, can change bandwidth, realizes 4G and switches.
For achieving the above object, the utility model provides following technical scheme: a kind of TV signal amplifiers, comprising:
Power transfer module, for converting supply voltage to line voltage distribution;
Filtration module, connects tv signal input, for removing the ripple in the superfrequency radio wave signal of input input;
Handover module, lotus root is connected to filtration module, with LTE switch, realizes 4G conversion;
Amplification module, is coupled to handover module, for superfrequency radio wave signal being carried out signal amplification and exporting.
By adopting technique scheme, the utility model comprises power transfer module, filtration module, handover module, amplification module, by+24V supply voltage being transferred power transfer module to line operating voltages, supply whole TV signal amplifiers and carry out work, the superfrequency radio wave module first after filtering of this TV signal amplifiers input input, filtration module can remove the ripple in superfrequency radio wave signal, handover module is with LTE switch, stirring LTE switch can handover module circuit, change bandwidth, the superfrequency radio wave that handover module transmits by amplification module carries out multistage amplification, realize the amplification of superfrequency radio wave signal and the conversion of 4G signal.
The utility model is set to further: described power transfer module comprises voltage-stabiliser tube, resistance, NPN transistor, inductance, and described NPN transistor comprises: base stage, is connected to voltage-stabiliser tube negative pole, the plus earth of voltage-stabiliser tube; Collector electrode, is connected to one end of resistance, and the other end of resistance is connected to the negative pole of voltage-stabiliser tube; Emitter, one end of coupling capacitance, the other end ground connection of electric capacity.
By adopting technique scheme, the supply voltage of+24V is converted to the line voltage distribution of+12V, the direct current of 12V can export as stabilized voltage power supply after voltage stabilizing, for providing power supply to control circuit.
The utility model is set to further: described filtration module comprises the first electric capacity, the second electric capacity, the first inductance, the second inductance, the first end of the first electric capacity connects the input signal of power transfer module, second end of the first electric capacity is coupled with the first end of the second electric capacity, the first end of the first inductance is connected with the second end of the first electric capacity, second end ground connection of the first electric capacity, second end of the second electric capacity connects the first end of the second inductance, and the second end of the second inductance is connected with handover module.
By adopting technique scheme, arranging the first electric capacity and the second electric capacity, to reduce the perception that line corona causes idle, improve transmission power, also make the service behaviour of circuit more stable, also reduce in superfrequency radio wave that ripple is to the interference of electronic circuit, inductance and capacitances in series can form frequency selection circuit, and the sensibility reciprocal size of inductance can select the frequency required for you simultaneously, electric capacity can filter the direct current by inductance, chooses the stabilized frequency of needs.
The utility model is set to further: described handover module comprises:
Circuit before switching, comprises multiple resonant circuit, the signal meeting 5-860MHZ bandwidth is passed through, enters amplification module;
Circuit after switching, makes the signal meeting 5-782MHZ bandwidth pass through, enters amplification module;
Toggle switch, switches mutually for realizing switching front circuit and switching rear circuit.
By adopting technique scheme, electric capacity and inductance in parallel, the stabilized frequency transmitted by filtration module can be screened further, a certain natural frequency and close frequencies are shown as larger impedance is produced to this frequency signal, block a certain frequency signal and allow other signal pass through, choose signal specific frequency, enter amplification module, this handover module comprises a toggle switch, toggle switch freely can be changed and switch front circuit and circuit after switching, work as toggle switch, make the resonant circuit short circuit that electric capacity and inductance form, make it through inductance, choose the signal meeting and can be enlarged into 5-782MHZ, realize 4G to switch.
The utility model is set to further: described amplification module is level Four amplifying circuit
By adopting technique scheme, level Four amplifying circuit comprises input stage, middle two-stage, output stage, and input stage mainly improves input impedance, suppress common mode disturbances, middle two-stage mainly amplifies voltage, and output stage is power amplification mainly, improve current output capability, reduce output impedance.
The utility model is set to further: described filtration module, handover module, first order amplifying circuit are two, and between first order amplifying circuit and second level amplifying circuit, be provided with the transformer two first order amplifying circuit output signals being carried out being coupled.
By adopting technique scheme, there are two signal inputs, respectively filtering and frequency-selecting are carried out to it, after one-level amplification module, two signals are carried out Signal averaging by transformer, then amplified by three grades and signal is exported, separately effectively ripple in input signal can be removed input signal process, improve the accuracy of frequency-selecting signal.
The utility model is set to further: described level Four amplifying circuit adopts resistance-capacitance coupling mode, and NPN transistor and PNP transistor used in combination.
By adopting technique scheme, the logical interchange due to capacitor stopping direct current, so their DC channel is mutually isolated, separate, so just give design, debugging and analysis bring great convenience, in transmitting procedure, the loss of signal is little, as long as coupling capacitance is selected enough large, then the signal of lower frequency also can have prime to be added to rear class damply hardly, realize amplifying step by step, and coupled modes volume is little, cost is low, the temperature drift that circuit produces is little, adopt NPN transistor and PNP transistor used in combination, the requirement of level Four amplifying circuit can be met, reduce loss, extend circuit useful life.
Accompanying drawing explanation
Fig. 1 is the structured flowchart connection layout of the utility model TV signal amplifiers embodiment;
Fig. 2 is the utility model TV signal amplifiers embodiment power transfer module circuit diagram;
Fig. 3 is the utility model TV signal amplifiers embodiment filter module circuit diagram;
Fig. 4 is the utility model TV signal amplifiers embodiment handover module circuit diagram;
Fig. 5 is the utility model TV signal amplifiers embodiment amplification module circuit diagram.
Accompanying drawing marks: 1, power transfer module; 2, filtration module; 3, handover module; 4, amplification module.
Embodiment
Referring to figs. 1 through Fig. 5, the utility model TV signal amplifiers embodiment is described further.
But the utility model can realize in various different formats, and the utility model should not be construed as and is limited to exemplary embodiment set forth herein.There is provided exemplary embodiment to contribute to more fully understanding the utility model.
With reference to Fig. 1, provide a kind of TV signal amplifiers realizing 4G and switch according to this embodiment the utility model, comprising: power transfer module, for converting+24V supply voltage to+12V line voltage distribution, supplying whole TV signal amplifiers and carrying out work; Filtration module, connect input, the input signal of input is superfrequency radio wave signal, and filtration module can remove the ripple in superfrequency radio wave signal; Handover module, is electrically connected with filtration module, and with LTE switch, toggle switch, can change the modular circuit in handover module, changes signal bandwidth, realizes 4G conversion; Amplification module, is electrically connected with handover module, for superfrequency radio wave signal is carried out signal amplification, is exported by amplifying signal finally by OUT end.
Concrete, below in conjunction with accompanying drawing 2-5, the concrete structure of the power transfer module in utility model, filtration module, handover module, amplification module is further described.
As shown in Figure 2, power transfer module comprises NPN transistor Q7, resistance R25, electric capacity C10, voltage-stabiliser tube Q6, and NPN transistor Q7 comprises: base stage, is connected to one end of voltage-stabiliser tube Q6, the other end ground connection of voltage-stabiliser tube Q6; Collector electrode, is connected to one end of resistance R25, and the other end of resistance R25 is connected to one end of the corresponding NPN transistor Q7 of voltage-stabiliser tube Q6; Emitter, one end of coupling capacitance C10, the other end ground connection of electric capacity C10, NPN transistor collector electrode with the node of base stage are connected the supply voltage (interchange) of+24V.
Above-mentioned power transfer module 1, wherein voltage-stabiliser tube Q6 and NPN transistor Q7 forms change-over circuit, and alternating voltage exists positive-negative polarity, when polarity of voltage is positive time, voltage-stabiliser tube conducting, base current polarity is just, collector current polarity is negative, transistor turns; When polarity of voltage is negative, voltage-stabiliser tube negative pole polarity is high level, just very low level, and voltage-stabiliser tube disconnects, and be equivalent to transistor base ground connection, transistor is in cut-off state.Utilize the characteristic of alternating current, the supply voltage of+24V is converted to the line voltage distribution of+12, flowed out by the emitter of NPN transistor Q7, this power transfer module is connected to filtration module, handover module, amplification module, carries out work for filtration module, handover module and amplification module.
As shown in Figure 3, filtration module has two parts, corresponding two input signals are arranged respectively, filtration module comprises two electric capacity (C39-C40), two inductance (L14-L15), one end of electric capacity C40 connects the input signal of power transfer module, the other end of electric capacity C40 and the coupled one end of electric capacity C39, one end of one end electric capacity C39 corresponding to electric capacity C40 of inductance L 15 is connected, the other end ground connection of inductance L 15, the other end of the corresponding electric capacity C40 of electric capacity C39 connects one end of inductance L 14, and the other end of inductance L 14 is connected with handover module.
Above-mentioned filtration module 2, electric capacity and inductance all have filtering voltage regulation effect, and when the voltage of power supply supply raises, electric capacity can store portion of energy, and when the supply voltage decreases, just electric field energy is discharged, and makes load voltage smoother; When the electric current of power supply supply increases, inductance gets up stored energy, and when the current decreases, again magnetic field energy is discharged, and makes load current smoother.
As shown in Figure 4, handover module 3 also has two parts, corresponding two input signals are arranged respectively, handover module comprises 5 inductance (L11-L13, L23-L24), 8 electric capacity (C31-C38), 1 toggle switch, one end of inductance L 13 is connected to the L14 of filtration module, the other end of inductance L 13 is connected with inductance L 12, the other end of the corresponding inductance L 13 of inductance L 12 is connected with inductance L 11, the other end of inductance L 11 is connected with amplification module, inductance L 12 is parallel with resonant circuit, inductance L 13 is connected with one end of electric capacity C36 with the tie point of inductance L 12, the other end of electric capacity C36 is connected with electric capacity C37, the other end of electric capacity C37 is connected with inductance L 24, the other end ground connection of inductance L 24, inductance L 24 is parallel with electric capacity C38, inductance L 12 is connected with one end of electric capacity C32 with the tie point of inductance L 11, the other end of electric capacity C32 is connected with electric capacity C33, the other end of electric capacity C33 is connected with inductance L 23, the other end ground connection of inductance L 23, inductance L 23 is parallel with electric capacity C34, electric capacity C36 is parallel with LTE switch, electric capacity C36 is connected to 1 of LTE switch, 2 pins, 1 pin of LTE switch is also in series with electric capacity C35, electric capacity C32 also with LTE switch in parallel, electric capacity C32 is connected to 3 of LTE switch, 4 pins, 3 pins of LTE switch are in series with electric capacity C31.
Above-mentioned handover module 3, according to LTE on off state, this handover module can be divided into circuit and the rear circuit of switching before switching, before switching during circuit, LTE switch 1,3 pin conducting, be equivalent to electric capacity C36, the tie point of electric capacity C37 and electric capacity C32, the tie point place of electric capacity C33 is parallel with electric capacity C35 and electric capacity C31, the equal conducting of all elements in module, and form resonant circuit, can show as a certain natural frequency and close frequencies makes it pass through, play screening effect, making to meet amplifying signal is that the signal of 5-860MHZ can pass through; After switching during circuit, LTE switch 2,4 pin conducting, handover module path shows as inductance L 13 and inductance L 11 connects conducting, before switching, circuit changes into and switches rear circuit, change bandwidth, making to meet amplifying signal is that the signal of 5-782MHZ passes through, and realizes 4G and switches.
As shown in Figure 5, amplification module is level Four amplifying circuit, comprise 2 first order and amplify (input stage), 1 second level amplification (amplifying stage), 1 third level amplification (amplifying stage) and 1 fourth stage amplification (output stage), 2 first order amplify the input of corresponding two signals, 2 first order are amplified to be amplified with the second level by transformer T1 and are connected, input stage mainly improves input impedance, suppress common mode disturbances, middle two-stage mainly amplifies voltage, output stage is power amplification mainly, improve current output capability, reduce output impedance.Described amplifications at different levels all adopt resistance-capacitance coupling mode, the logical interchange due to capacitor stopping direct current, so their DC channel is mutually isolated, separate, brings great convenience so just to design, debugging and analysis, in transmitting procedure, the loss of signal is little, as long as coupling capacitance is selected enough large, then the signal of lower frequency also can have prime to be added to rear class damply hardly, realize amplifying step by step, and coupled modes volume is little, and cost is low, the temperature drift that circuit produces is little.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a TV signal amplifiers, is characterized in that, comprising:
Power transfer module, for converting supply voltage to line voltage distribution;
Filtration module, connects tv signal input, for removing the ripple in the superfrequency radio wave signal of input input;
Handover module, lotus root is connected to filtration module, with LTE switch, realizes 4G conversion;
Amplification module, is coupled to handover module, for superfrequency radio wave signal being carried out signal amplification and exporting.
2. TV signal amplifiers according to claim 1, is characterized in that: described power transfer module comprises voltage-stabiliser tube, resistance, NPN transistor, inductance, and described NPN transistor comprises: base stage, is connected to voltage-stabiliser tube negative pole, the plus earth of voltage-stabiliser tube; Collector electrode, is connected to one end of resistance, and the other end of resistance is connected to the negative pole of voltage-stabiliser tube; Emitter, one end of coupling capacitance, the other end ground connection of electric capacity.
3. TV signal amplifiers according to claim 2, it is characterized in that: described filtration module comprises the first electric capacity, the second electric capacity, the first inductance, the second inductance, the first end of described first electric capacity connects tv signal input, second end of the first electric capacity is coupled with the first end of the second electric capacity, the first end of the first inductance is connected with the second end of the first electric capacity, second end ground connection of the first electric capacity, second end of the second electric capacity connects the first end of the second inductance, and the second end of the second inductance is connected with handover module.
4. TV signal amplifiers according to claim 3, is characterized in that: described handover module comprises:
Circuit before switching, comprises multiple resonant circuit, the signal meeting 5-860MHZ bandwidth is passed through, enters amplification module;
Circuit after switching, makes the signal meeting 5-782MHZ bandwidth pass through, enters amplification module;
Toggle switch, switches mutually for realizing switching front circuit and switching rear circuit.
5. TV signal amplifiers according to claim 4, is characterized in that: described amplification module is level Four amplifying circuit.
6. TV signal amplifiers according to claim 5, it is characterized in that: described filtration module, handover module, first order amplifying circuit are two, and between first order amplifying circuit and second level amplifying circuit, be provided with the transformer two first order amplifying circuit output signals being carried out being coupled.
7. TV signal amplifiers according to claim 6, is characterized in that: described level Four amplifying circuit adopts resistance-capacitance coupling mode, and NPN transistor and PNP transistor used in combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555510.0U CN204089953U (en) | 2014-09-25 | 2014-09-25 | TV signal amplifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555510.0U CN204089953U (en) | 2014-09-25 | 2014-09-25 | TV signal amplifiers |
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| Publication Number | Publication Date |
|---|---|
| CN204089953U true CN204089953U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420555510.0U Expired - Fee Related CN204089953U (en) | 2014-09-25 | 2014-09-25 | TV signal amplifiers |
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| CN (1) | CN204089953U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660868A (en) * | 2015-02-25 | 2015-05-27 | 成都中远信电子科技有限公司 | High-definition image intensifier control system |
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2014
- 2014-09-25 CN CN201420555510.0U patent/CN204089953U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660868A (en) * | 2015-02-25 | 2015-05-27 | 成都中远信电子科技有限公司 | High-definition image intensifier control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20200925 |