CN109510957A - A kind of optical fiber satellite low noise block - Google Patents
A kind of optical fiber satellite low noise block Download PDFInfo
- Publication number
- CN109510957A CN109510957A CN201811475413.XA CN201811475413A CN109510957A CN 109510957 A CN109510957 A CN 109510957A CN 201811475413 A CN201811475413 A CN 201811475413A CN 109510957 A CN109510957 A CN 109510957A
- Authority
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- China
- Prior art keywords
- signal
- optical fiber
- feed
- low noise
- signal converter
- 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.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 230000010287 polarization Effects 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- -1 Polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of optical fiber satellite low noise blocks, including tuner ontology, tuner ontology includes feed, the shielding case and the element circuit in shielding case for connecting feed, the element circuit includes low-noise wide-band amplifier, bandpass filter, power divider, balanced mixer and intermediate frequency amplifier, element circuit further includes digital signal converter, stacked memory and fiber-optic signal converter, digital signal converter is used to intermediate-freuqncy signal being converted to digital signal, stacked memory is used for the frequency converted multiband combining form in 0.95GHz-5.45GHz, fiber-optic signal converter is used to intermediate-freuqncy signal being converted to optical signal.Intermediate-freuqncy signal is converted into optical signal by fiber-optic signal converter by the present invention, can improve transmission rate, drops low signal attenuation, and cost is installed and used in reduction.
Description
Technical field
The present invention relates to tuner field, especially a kind of optical fiber satellite low noise block.
Background technique
Tuner be generally used for receiving high-frequency signal and demodulate video information a kind of device and public passage one
Part.Especially existing television set tuner is exactly the tuning and high-frequency signal amplification for receiving TV signal.
Existing tuner is generally divided into digital signal tuner and analog signal tuner, with microwave technology and electronics
The development of technology, digital signal tuner using more and more extensive.The effect of digit tuner is to receive DTV high frequency
Signal, and channel selection and high-frequency signal amplification and frequency-conversion processing are carried out, some are also with intermediate-freuqncy signal amplification and high-frequency digital letter
Number demodulation function, high-frequency digital signal is demodulated, and the digital signal of output is transport stream, it is the number letter as unit of frame
Number transport stream contains the signals such as synchronous head, data and ending in each frame of digital signal.
Existing tuner can only generally be transmitted by coaxial data, and the volume of coaxial cable is big, the frequency band of transmission and
Rate is low, needs to install an optical transport conversion equipment again in downstream end, installs and uses at high cost, installation complexity.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of optical fiber satellite low noise blocks, solve tradition
Coaxial cable transmission band and rate is low and the problem of signal decaying, the application are believed intermediate frequency by fiber-optic signal converter
Number it is converted into optical signal, transmission rate can be improved, drop low signal attenuation, cost is installed and used in reduction.
The purpose of the present invention is achieved through the following technical solutions:
A kind of optical fiber satellite low noise block, including tuner ontology, tuner ontology include feed, connect feed shielding case and
Element circuit in shielding case, the element circuit include low-noise wide-band amplifier, bandpass filter, power distribution
Device, balanced mixer and intermediate frequency amplifier, element circuit further include that digital signal converter, stacked memory and fiber-optic signal turn
Parallel operation, digital signal converter are used to be converted to intermediate-freuqncy signal digital signal, and stacked memory is used to multiband combine shape
Formula is converted into the frequency in 0.95GHz-5.45GHz, and fiber-optic signal converter is used to intermediate-freuqncy signal being converted to optical signal.
Preferably, the setting of tuner body lower part is by optical fiber output port and F power port, optical fiber output port directly with
Optical fiber is connected, and function there are two F power ports, and one is that power supply is provided to tuner ontology, the other is transmission downlink letter
Number.Because optical fiber tuner is unable to loading power, coaxial cable is become to the power supply line of tuner ontology, electricity is both provided
Source, and transmission of downlink signal.
Preferably, dielectric polorization phase plate, V polarization probe and H polarization probe are provided on feed, in signal processing circuit
In, satellite-signal is received using feed, it then will be into the horizontal polarization signals of feed and vertically by dielectric polorization phase plate
Polarized signal is exported respectively to H polarization probe and V polarization probe.
Preferably, the material of dielectric polorization phase plate uses polytetrafluoroethylene (PTFE), which is used for feed
Received satellite-signal is isolated, its horizontal polarization signals and vertical polarization signal are not interfere with each other.
Preferably, the dielectric polorization phase plate in feed and polarization probe are inserted into feed in 45 ° of angles.
The beneficial effects of the present invention are: the present invention solves conventional coaxial cable transmission band and rate is low and signal
Intermediate-freuqncy signal is converted into optical signal by fiber-optic signal converter by the problem of decaying, the application, can improve transmission rate, is reduced
Cost is installed and used in signal decaying, reduction.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is planar structure schematic diagram of the present invention；
In figure, 101- tuner ontology, 102- feed, 103- optical fiber output port, 104-F power port, 105- digital signal
Converter, 106- fiber-optic signal converter, 107- shielding case.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
A kind of optical fiber satellite low noise block please refers to shown in attached drawing 1- attached drawing 2, including tuner ontology 101, tuner ontology
101 include feed 102, the shielding case 107 for connecting feed 102 and the element circuit in shielding case 107, the unit electricity
Road includes low-noise wide-band amplifier, bandpass filter, power divider, balanced mixer and intermediate frequency amplifier, element circuit
It further include digital signal converter 105, stacked memory and fiber-optic signal converter 106, digital signal converter 105 is used for will
Intermediate-freuqncy signal is converted to digital signal, and stacked memory is for converting multiband combining form in 0.95GHz-5.45GHz
Frequency, fiber-optic signal converter 107 is used to intermediate-freuqncy signal being converted to optical signal, and 101 lower part of tuner ontology is arranged by light
Fine output port 103 and F power port 104, optical fiber output port 103 is directly connected with optical fiber, and F power port 104 has two
A function, one is to provide power supply to tuner ontology 101, the other is transmission of downlink signal.Because optical fiber tuner cannot
Therefore coaxial cable is become the power supply line of tuner ontology by loading power, not only provide power supply, but also transmission of downlink signal.
As preferred one embodiment, it is provided with dielectric polorization phase plate, V polarization probe and H polarization on feed 102 and visits
Needle receives satellite-signal using feed 102, then will enter feed by dielectric polorization phase plate in the signal processing circuit
102 horizontal polarization signals and vertical polarization signal are exported respectively to H polarization probe and V polarization probe, dielectric polorization phase plate
Material use polytetrafluoroethylene (PTFE), which makes its water for the received satellite-signal of feed to be isolated
Flat polarized signal and vertical polarization signal are not interfere with each other, and the dielectric polorization phase plate in feed and polarization probe are inserted in 45 ° of angles
In feed.
It should be further noted that tuner ontology 101 is generally exported using coaxial signal, this mode signal output
There are problems that signal decaying, a stacked memory is arranged in tuner ontology 101 again in the application, by frequency range and polarization etc. four
Kind combining form is converted to the frequency in 0.95GHz-5.45GHz, then radiofrequency signal is converted into one by digital signal converter
A digital signal, and fiber-optic signal converter 105 can convert digital signals into optical signal, and carry out data biography by optical fiber
It passs.
The middle part of tuner ontology 101 is provided with optical fiber output port 103, and lower end is arranged by F power port 104, the height
Frequency head ontology 101 is more bigger than traditional tuner volume, the downlink signal of satellite directly can be converted into optical signal, and optical signal
Transmission attenuation is extremely low, avoids satellite-signal and decays in conversion transmittance process too much, so that there is phenomena such as dropout.
It should be noted that the present invention solves conventional coaxial cable transmission band and rate is low and signal decaying
Intermediate-freuqncy signal is converted into optical signal by fiber-optic signal converter 106 by problem, the application, can improve transmission rate, reduces letter
Number decaying, reduction install and use cost.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (5)
1. a kind of optical fiber satellite low noise block, including tuner ontology, tuner ontology include feed, connect the shielding case of feed with
And the element circuit in shielding case, the element circuit include low-noise wide-band amplifier, bandpass filter, power distribution
Device, balanced mixer and intermediate frequency amplifier, which is characterized in that element circuit further includes digital signal converter, stacked memory
With fiber-optic signal converter, digital signal converter is used to be converted to intermediate-freuqncy signal digital signal, and stacked memory is used for will
Multiband combining form is converted into the frequency in 0.95GHz-5.45GHz, and fiber-optic signal converter is for converting intermediate-freuqncy signal
For optical signal.
2. a kind of optical fiber satellite low noise block according to claim 1, which is characterized in that tuner body lower part is arranged by optical fiber
Output port and F power port.
3. a kind of optical fiber satellite low noise block according to claim 1, which is characterized in that be provided with dielectric polorization phase shift on feed
Piece, V polarization probe and H polarization probe.
4. a kind of optical fiber satellite low noise block according to claim 1, which is characterized in that the material of dielectric polorization phase plate uses
Polytetrafluoroethylene (PTFE).
5. a kind of according to claim 1 or 3 or 4 optical fiber satellite low noise blocks, which is characterized in that the dielectric polorization in feed moves
Photograph and polarization probe are inserted into feed in 45 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811475413.XA CN109510957A (en) | 2018-12-04 | 2018-12-04 | A kind of optical fiber satellite low noise block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811475413.XA CN109510957A (en) | 2018-12-04 | 2018-12-04 | A kind of optical fiber satellite low noise block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109510957A true CN109510957A (en) | 2019-03-22 |
Family
ID=65751564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811475413.XA Pending CN109510957A (en) | 2018-12-04 | 2018-12-04 | A kind of optical fiber satellite low noise block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109510957A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0938090A (en) * | 1995-08-02 | 1997-02-10 | Matsushita Electric Ind Co Ltd | Television receiving device |
| CN101287077A (en) * | 2007-11-21 | 2008-10-15 | 雷科通技术（杭州）有限公司 | Novel integrated bidirectional tuner |
| US20080298516A1 (en) * | 2007-05-29 | 2008-12-04 | The Directv Group, Inc. | Integrated multi-sat lnb and frequency translation module |
| CN201577162U (en) * | 2009-12-08 | 2010-09-08 | 山东泰信电子有限公司 | Digital television terminal equipment capable of receiving optical fiber signal |
| CN202077025U (en) * | 2011-05-23 | 2011-12-14 | 深圳翔成电子科技有限公司 | KU band tuner using single cable for transmission |
| CN205356615U (en) * | 2016-02-05 | 2016-06-29 | 丁锋 | Live controller of cinema |
| EP3337062A1 (en) * | 2016-12-13 | 2018-06-20 | UAB "Terra" | A method and an apparatus for transmitting a plurality of received satellite and digital terrestrial television signals through a fiber network |
-
2018
- 2018-12-04 CN CN201811475413.XA patent/CN109510957A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0938090A (en) * | 1995-08-02 | 1997-02-10 | Matsushita Electric Ind Co Ltd | Television receiving device |
| US20080298516A1 (en) * | 2007-05-29 | 2008-12-04 | The Directv Group, Inc. | Integrated multi-sat lnb and frequency translation module |
| CN101287077A (en) * | 2007-11-21 | 2008-10-15 | 雷科通技术（杭州）有限公司 | Novel integrated bidirectional tuner |
| CN201577162U (en) * | 2009-12-08 | 2010-09-08 | 山东泰信电子有限公司 | Digital television terminal equipment capable of receiving optical fiber signal |
| CN202077025U (en) * | 2011-05-23 | 2011-12-14 | 深圳翔成电子科技有限公司 | KU band tuner using single cable for transmission |
| CN205356615U (en) * | 2016-02-05 | 2016-06-29 | 丁锋 | Live controller of cinema |
| EP3337062A1 (en) * | 2016-12-13 | 2018-06-20 | UAB "Terra" | A method and an apparatus for transmitting a plurality of received satellite and digital terrestrial television signals through a fiber network |
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