CN205657780U - Novel satellite television frequency demultiplier - Google Patents
Novel satellite television frequency demultiplier Download PDFInfo
- Publication number
- CN205657780U CN205657780U CN201620417153.0U CN201620417153U CN205657780U CN 205657780 U CN205657780 U CN 205657780U CN 201620417153 U CN201620417153 U CN 201620417153U CN 205657780 U CN205657780 U CN 205657780U
- Authority
- CN
- China
- Prior art keywords
- circuit
- satellite
- frequency
- signal
- amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The utility model discloses a novel satellite television frequency demultiplier, including three satellite signal reception, treatment circuit, four KU frequency channel signal output control circuit, three satellite signal reception, treatment circuit are equallyd divide otherly and four KU frequency channel signal output control circuit parallel connection, three satellite signal reception, treatment circuit homogeneous phase with, any circuit all includes horizontal polarisation amplifier circuit, vertical polarisation amplifier circuit, CMOS satellite tuner, refers to the crystal oscillator, others and horizontal polarisation amplifier circuit, vertical polarisation amplifier circuit, reference crystal oscillator electric connection are equallyd divide to CMOS satellite tuner. The utility model discloses a circuit structure's simplification, the use quantity of having reduced electronic components makes the utility model discloses the volume effectively reduces, and the reliability improves, produces, maintains cost reduction, and economic nature is better.
Description
Technical field
This utility model relates to satellite television frequency demultiplier, particularly to a kind of New Satellite TV frequency demultiplier.
Background technology
Fewer due to number of satellite in early days, lnb (LOW NOISE BLOCK DOWN CONVERTER on market, LNB, also it is commonly called as: tuner) it is all routine-dish one star lnb of receiving single satellite, but along with the substantial increase of number of satellite during nearly 10 years, market is increasing for the demand of the lnb of a dishful of many stars.And this type of frequency demultiplier circuit on existing market is extremely complex, production difficulty is very big, and cost is the highest.
Receive three satellite low noise frequency demultipliers (Monoblock LOW NOISE BLOCK DOWN CONVERTER, MonoblockLNB) it is through a teledish and collects the satellite TV signal of three faint different satellites, and by these signaling reflexs to the waveguide pipe different for Monoblock LNB being arranged on teledish, and through the amplification of Monoblock LNB and frequency reducing, make these signals can be reduced into image and audio signal, via televising out by indoor top box of digital machine (STB) demodulation.Receiving three satellite-signal lnbs is the satellite TV signal that the DISEQC signal sent by the Set Top Box DISEQC circuit for detecting that controls in frequency demultiplier and on-off circuit select respective satellite.
Receive three satellite-signal lnb schematic diagrams as shown in Figure 1.When teledish collects three satellite TV signals；Both satellite 1 comprised horizontal signal 30, vertical signal 20 respectively；Satellite 2 222 comprises two horizontal signals 50, vertical signal 40 respectively；Satellite 3 333 comprises horizontal signal 70 respectively, vertical signal 60, the different waveguide pipe into three satellite-signal lnbs can be reflected, each signal is by the first order amplifier 1 of this frequency demultiplier, and second level amplifier 2 and third level amplifier 3 carry out the amplification of satellite TV signal and be divided into two through 4 above-mentioned four kind satellite TV signals of allotter and become 12 satellite TV signals；Then the local oscillation signal produced with high local oscillator oscillating circuit (not shown) and low local oscillator oscillating circuit (not shown) respectively after band filter 5 is downconverted to intermediate-freuqncy signal (0.95～2.15GH after frequency mixer 6 is mixedZ).Now having 12 kinds of intermediate-freuqncy signals is satellite 1 low-frequency range horizontal signal respectively, satellite 1 high band horizontal signal, satellite 1 low-frequency range vertical signal, satellite 1 high band vertical signal；Satellite 2 222 low-frequency range horizontal signal, satellite 2 222 high band horizontal signal, satellite 2 222 low-frequency range vertical signal, satellite 2 222 high band vertical signal；Satellite 3 333 low-frequency range horizontal signal, satellite 3 333 high band horizontal signal, satellite 3 333 low-frequency range vertical signal, these 12 kinds of satellite TV signals of satellite 3 333 high band vertical signal.These 12 kinds of intermediate-freuqncy signals are amplified through first order intermediate frequency amplifier 7 respectively, and four enter four goes out and connect the cable transmission Set Top Box to indoor by the outfan on frequency demultiplier after signal selecting switch IC8 and second level intermediate frequency amplifier 9 amplify.The each outfan of this type of frequency demultiplier has satellite 1 low-frequency range horizontal signal, satellite 1 high band horizontal signal, satellite 1 low-frequency range vertical signal, satellite 1 high band vertical signal；Satellite 2 222 low-frequency range horizontal signal, satellite 2 222 high band horizontal signal, satellite 2 222 low-frequency range vertical signal, satellite 2 222 high band vertical signal, satellite 3 333 low-frequency range horizontal signal, satellite 3 333 high band horizontal signal, satellite 3 333 low-frequency range vertical signal, these 12 kinds of satellite TV signals of satellite 3 333 high band vertical signal.User can select the program in the satellite TV signal of respective satellite by the selection DISEQC circuit for detecting of Set Top Box and on-off circuit 10.
The most this frequency demultiplier also can realize the effect of an a dishful of Samsung of frequency demultiplier, but circuit comprises two independence high local oscillator oscillating circuits and low local oscillator oscillating circuit, 12 mixting circuits and 12 first order IF amplifier circuits and below three four enter four and go out signal selecting switch IC8 and IF amplifier circuit so many circuit in the second level has resulted in the frequency demultipliers of this four outputs and at least to have used two circuit boards and could realize, there is circuit complicated, cost of parts is high and frequency demultiplier is sufficiently bulky；The technical problems such as production, maintenance cost height.
Utility model content
The technical problems to be solved in the utility model is to provide that circuit is simple, part uses less, low cost, volume are little, produce and a kind of New Satellite TV frequency demultiplier that maintenance cost is low.
In order to solve above-mentioned technical problem, the technical solution of the utility model is:
A kind of New Satellite TV frequency demultiplier, including three satellite signal receivings, processes circuit, four KU frequency band signals output control circuits；Described three satellite signal receivings, process circuit are connected in parallel with four KU frequency band signals output control circuits respectively；Described three satellite signal receivings, process circuit are the most identical, any one circuit all includes horizontal polarization amplifying circuit, vertical polarization amplifying circuit, CMOS satellite tuner, reference crystal oscillator, and described CMOS satellite tuner is electrically connected with horizontal polarization amplifying circuit, vertical polarization amplifying circuit, reference crystal oscillator respectively.
Further, described horizontal polarization amplifying circuit includes that first order amplifier, second level amplifier, band filter, described first order amplifier, second level amplifier, band filter are sequentially connected in series.
Further, described vertical polarization amplifying circuit includes that first order amplifier, second level amplifier, band filter, described first order amplifier, second level amplifier, band filter are sequentially connected in series.
Further, described with reference to crystal oscillator be frequency be the paster crystal oscillator of 25MHz.
Further, described four KU frequency band signals output control circuits are the most identical, and described KU frequency band signals output control circuit is DISEQC circuit for detecting and on-off circuit.
Use technique scheme, owing to employing CMOS satellite tuner, the satellite signal receiving with reference to crystal oscillator composition, process circuit, and KU frequency band signals output control circuit.Making this utility model efficiently solve the circuit complexity that prior art exists, cost of parts is high and frequency demultiplier is sufficiently bulky；The technical problems such as production, maintenance cost height.The electronic devices and components that this utility model uses are few, and circuit is simple, and volume is little, and one piece of size is that 80mm × 129mm circuit board achieves that, produce and maintenance cost is low.Synchronous signal receives, transmission effect is more preferable, and product market potential competitiveness is more preferable, high financial profit.
Accompanying drawing explanation
Fig. 1 is prior art circuits schematic diagram；
Fig. 2 is this utility model circuit diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described further.At this it should be noted that be adapted to assist in for the explanation of these embodiments and understand this utility model, but it is not intended that restriction of the present utility model.As long as just can be mutually combined additionally, technical characteristic involved in each embodiment of this utility model disclosed below does not constitutes conflict each other.
As shown in Figure 2, a kind of New Satellite TV frequency demultiplier, including the horizontal signal 30 horizontal polarization amplifying circuit of satellite 1, vertical signal 20 vertical polarization amplifying circuit；Two horizontal signal 50 horizontal polarization amplifying circuits of satellite 2 222, vertical signal 40 vertical polarization amplifying circuit；The horizontal signal 70 horizontal polarization amplifying circuit of satellite 3 333, vertical signal 60 vertical polarization amplifying circuit；Four KU frequency band signals output control circuits.Satellite 1, satellite 2 222, the signal of satellite 3 333 receive, process circuit is connected in parallel with four KU frequency band signals output control circuits respectively.Horizontal signal 30 horizontal polarization amplifying circuit and horizontal signal 50 horizontal polarization amplifying circuit, horizontal signal 70 horizontal polarization amplifying circuit are the most identical；Vertical signal 20 vertical polarization amplifying circuit and vertical signal 40 vertical polarization amplifying circuit, vertical signal 60 vertical polarization amplifying circuit are the most identical.CMOS satellite tuner 11 is connected composition satellite 1 signal with horizontal signal 30 horizontal polarization amplifying circuit, vertical signal 20 vertical polarization amplifying circuit, reference crystal oscillator 12 respectively and receives, processes circuit.CMOS satellite tuner 11 is connected composition satellite 2 222 signal with horizontal signal 50 horizontal polarization amplifying circuit, vertical signal 40 vertical polarization amplifying circuit, reference crystal oscillator 12 respectively and receives, processes circuit.CMOS satellite tuner 11 is connected composition satellite 2 333 signal with horizontal signal 70 horizontal polarization amplifying circuit, vertical signal 60 vertical polarization amplifying circuit, reference crystal oscillator 12 respectively and receives, processes circuit.
It is complicated that technique scheme efficiently solves existing frequency demultiplier circuit, and cost of parts is high and frequency demultiplier is sufficiently bulky；The technical problems such as production, maintenance cost height.Effectively achieving the simplification of circuit structure, reduce the usage quantity of electronic devices and components so that this utility model volume effectively reduces, reliability improves, and production, maintenance cost reduce, and business efficiency improves.
During this utility model is embodied as, vertical signal 20 vertical polarization amplifying circuit, vertical signal 40 vertical polarization amplifying circuit, vertical signal 60 vertical polarization any one of amplifying circuit all include that first order amplifier 1, second level amplifier 2, band filter 5, first order amplifier 1, second level amplifier 2, band filter 5 are sequentially connected in series.Horizontal signal 30 horizontal polarization amplifying circuit, horizontal signal 50 horizontal polarization amplifying circuit, horizontal signal 70 horizontal polarization any one of amplifying circuit all include that first order amplifier 1, second level amplifier 2, band filter 5, first order amplifier 1, second level amplifier 2, band filter 3 are sequentially connected in series.It is paster crystal oscillator that frequency is 25MHz with reference to crystal oscillator 12.Four KU frequency band signals output control circuits are the most identical, and it is DISEQC circuit for detecting and on-off circuit 10 that this utility model is embodied as middle KU frequency band signals output control circuit.
Above in association with accompanying drawing, embodiment of the present utility model is explained in detail, but this utility model is not limited to described embodiment.For a person skilled in the art, in the case of without departing from this utility model principle and spirit, these embodiments are carried out multiple change, revises, replace and modification, still fall within protection domain of the present utility model.
Claims (5)
1. a New Satellite TV frequency demultiplier, it is characterised in that include three satellite signal receivings, places
Reason circuit, four KU frequency band signals output control circuits；Described three satellite signal receivings, process circuit
It is connected in parallel with four KU frequency band signals output control circuits respectively；Described three satellite signal receivings,
Process circuit the most identical, any one circuit all include horizontal polarization amplifying circuit, vertical polarization amplifying circuit,
CMOS satellite tuner, reference crystal oscillator, described CMOS satellite tuner amplifies with horizontal polarization respectively
Circuit, vertical polarization amplifying circuit, reference crystal oscillator are electrically connected with.
New Satellite TV frequency demultiplier the most according to claim 1, it is characterised in that described level pole
Changing amplifying circuit and include first order amplifier, second level amplifier, band filter, the described first order is amplified
Device, second level amplifier, band filter are sequentially connected in series.
New Satellite TV frequency demultiplier the most according to claim 1, it is characterised in that described vertical pole
Changing amplifying circuit and include first order amplifier, second level amplifier, band filter, the described first order is amplified
Device, second level amplifier, band filter are sequentially connected in series.
4. according to the New Satellite TV frequency demultiplier described in any one of claims 1 to 3, it is characterised in that
Described with reference to crystal oscillator be frequency be the paster crystal oscillator of 25MHz.
New Satellite TV frequency demultiplier the most according to claim 1, it is characterised in that described four
KU frequency band signals output control circuit is the most identical, and described KU frequency band signals output control circuit is DISEQC
Circuit for detecting and on-off circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620417153.0U CN205657780U (en) | 2016-05-09 | 2016-05-09 | Novel satellite television frequency demultiplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620417153.0U CN205657780U (en) | 2016-05-09 | 2016-05-09 | Novel satellite television frequency demultiplier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205657780U true CN205657780U (en) | 2016-10-19 |
Family
ID=57403676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620417153.0U Active CN205657780U (en) | 2016-05-09 | 2016-05-09 | Novel satellite television frequency demultiplier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205657780U (en) |
-
2016
- 2016-05-09 CN CN201620417153.0U patent/CN205657780U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3133760A1 (en) | RECEIVING LEVEL FOR BROADCASTING AND TELEVISION RECEIVERS | |
| CN103780885B (en) | KU wave band dual polarization dual output tuner | |
| CN103490730B (en) | The multi-functional frequency demultiplier of PLL CS wave bands of dual polarization integrated circuit structure | |
| US8291455B2 (en) | Band converter and satellite television system thereof | |
| CN203399199U (en) | Universal tuner and digital television receiver system | |
| CN204598153U (en) | Television mainboard | |
| CN203722753U (en) | KU-waveband dual-polarized dual output high frequency tuner | |
| CN205657780U (en) | Novel satellite television frequency demultiplier | |
| CN204361995U (en) | Low-noise frequency demultiplier integrating C wave band and KU wave band | |
| JP4140900B2 (en) | Satellite signal reception and transmission system | |
| CN205726077U (en) | A kind of satellite low noise block circuit and satellite low noise block | |
| CN205320032U (en) | Two satellite signal dual output low noise frequency demultipliers | |
| TWI514785B (en) | Optical low-noise block down-converter and satellite television system | |
| CN204334779U (en) | Ku wave band list local oscillator dual output tuner | |
| CN108964673A (en) | A kind of switch combiner module and combiner system connecting LNB | |
| CN205657801U (en) | Dual output satellite signal low noise frequency demultiplier | |
| CN208638350U (en) | A kind of CASS feed integration satellite low-converter | |
| CN203911873U (en) | Dual polarization Twin PLL integrated circuit dual output frequency demultiplier | |
| CN206060957U (en) | The vehicle-mounted frequency demultiplier of the double local oscillator dual output high-gain low-noises of dual polarization | |
| CN103973230A (en) | Dual-polarization Twin PLL integrated circuit dual-output frequency demultiplier | |
| CN202475371U (en) | Two-output voltage-controlled oscillator loop signal distribution amplifier | |
| CN208158778U (en) | A kind of eight output satellite TV frequency demultipliers | |
| CN205249145U (en) | High stable local oscillator frequency LO generating circuit | |
| CN2904504Y (en) | Satellite signal receiver of multiplex output and input | |
| CN203734621U (en) | PLL-CS wave-band multifunctional frequency demultiplier in dual-polarization integrated circuit structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |