CN103715989B - Optical fiber low-noise frequency and satellite TV system - Google Patents
Optical fiber low-noise frequency and satellite TV system Download PDFInfo
- Publication number
- CN103715989B CN103715989B CN201210375833.7A CN201210375833A CN103715989B CN 103715989 B CN103715989 B CN 103715989B CN 201210375833 A CN201210375833 A CN 201210375833A CN 103715989 B CN103715989 B CN 103715989B
- Authority
- CN
- China
- Prior art keywords
- signal
- frequency
- coupled
- low
- noise
- 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
Abstract
A kind of optical fiber low-noise frequency and satellite TV system。This optical fiber low-noise frequency is used for satellite TV system, and this optical fiber low-noise frequency includes: the first frequency reducing module, is coupled to the satellite antenna of this satellite TV system, and the vertical polarization signal being used for receiving this satellite antenna is converted to the first intermediate-freuqncy signal；Second frequency reducing module, is coupled to this satellite antenna, is used for the horizontal polarization signals that this satellite antenna receives is converted to the second intermediate-freuqncy signal；And the 3rd frequency reducing module, including first input end and the second input, this first input end is coupled between the first frequency demultiplier of this satellite antenna and this first frequency reducing module, this second input is coupled between the second frequency demultiplier of this satellite antenna and this second frequency reducing module, be used for draw part this vertical polarization signal and this horizontal polarization signals and by combination after, be converted to exemplary electrical signal。The present invention can effectively reduce inconvenience, the acceleration installation effectiveness that optical fiber low-noise frequency dish is installed in the face of position。
Description
Technical field
The present invention relates to a kind of optical fiber low-noise frequency and satellite TV system, espespecially one can draw radio frequency satellite-signal, convert it to exemplary electrical signal output, perform satellite disc para-position according to this, to accelerate optical fiber low-noise frequency and the satellite TV system of installation effectiveness。
Background technology
In recent years, optical fiber low-noise frequency (OpticalLow-NoiseBlockDown-converter, OpticalLNB) advanced trend has been become in the application of satellite television broadcasting, main reason is that optic communication has ultra broadband, low transmission loss under distance, passive type optical branching filter, many lightwave signals can be transmitted simultaneously, not by advantages such as electromagnetic interference, and utilize single laser module that satellite-signal can be sent to multi-user and the advantage such as remote, conventional transmission cable (such as RG-6 cable) can be overcome completely to cause loss of signal and the shortcoming that cannot demodulate because of distance。
It is said that in general, known optical fiber low-noise frequency includes a F formula adapter and a FC formula adapter, it is respectively intended to input DC power and output optical signal。It is well known, however, that optical fiber low-noise frequency without the outgoing route of radio frequency satellite-signal (i.e. the signal of telecommunication), it is impossible to support typical case's (Legacy) framework。Therefore, satellite TV system dealer is when installing satellite disc with satellite para-position, it is necessary to utilize many flats equipment, optical signal converted back into electric signals optical fiber low-noise frequency exported, then this signal of telecommunication sends to demodulating equipment (such as Set Top Box)。So, from the signal that demodulating equipment exports, the engineering staff performing para-position could judge that whether para-position is successful。Furthermore, satellite disc and optical fiber low-noise frequency are often arranged at roof or the exterior wall of building, and these environment generally will not arrange supply socket or provide any power supply。Therefore, engineering staff must pull out power supply from interior of building, to supply electricity to many flats equipment and demodulating equipment, so requires for engineering staff, it will improve the degree of difficulty performing para-position, and the time causing installing satellite disc and satellite para-position is elongated。
Therefore, how under the design architecture of existing fiber lnb, directly draw radio frequency satellite-signal, convert it to exemplary electrical signal output, perform satellite disc para-position according to this, to accelerate installation effectiveness, actually the one of the important topic of this area。
Summary of the invention
Therefore, namely the main purpose of the present invention is in that to provide a kind of optical fiber low-noise frequency and satellite TV system, can draw radio frequency satellite-signal, converts it to exemplary electrical signal output, performs satellite disc para-position according to this, to accelerate installation effectiveness。
Disclosure one optical fiber low-noise frequency, this optical fiber low-noise frequency is used for a satellite TV system, this optical fiber low-noise frequency comprises: one first frequency reducing module, this the first frequency reducing module couples is in a satellite antenna of this satellite TV system, and the vertical polarization signal being used for receiving this satellite antenna is converted to one first intermediate-freuqncy signal；One second frequency reducing module, this second frequency reducing module couples is in this satellite antenna, and the horizontal polarization signals being used for receiving this satellite antenna is converted to one second intermediate-freuqncy signal；And one the 3rd frequency reducing module, 3rd frequency reducing module comprises a first input end and one second input, this first input end is coupled between this satellite antenna and one first frequency demultiplier of this first frequency reducing module, this second input is coupled between this satellite antenna and one second frequency demultiplier of this second frequency reducing module, it is used for drawing this vertical polarization signal of part and this horizontal polarization signals and by after this vertical polarization signal and the combination of this horizontal polarization signals, is converted to an exemplary electrical signal。
Invention additionally discloses a kind of satellite TV system, this satellite TV system comprises: a satellite antenna, and this satellite antenna is used for receiving a vertical polarization signal and a horizontal polarization signals；One optical fiber low-noise frequency, this optical fiber low-noise frequency comprises: one first frequency reducing module, and this first frequency reducing module couples, in this satellite antenna, is used for this vertical polarization signal is converted to one first intermediate-freuqncy signal；One second frequency reducing module, this second frequency reducing module couples, in this satellite antenna, is used for being converted to this horizontal polarization signals one second intermediate-freuqncy signal；And one the 3rd frequency reducing module, 3rd frequency reducing module comprises a first input end and one second input, this first input end is coupled between this satellite antenna and one first frequency demultiplier of this first frequency reducing module, this second input is coupled between this satellite antenna and one second frequency demultiplier of this second frequency reducing module, it is used for drawing this vertical polarization signal of part and this horizontal polarization signals and by after this vertical polarization signal and the combination of this horizontal polarization signals, is converted to an exemplary electrical signal；And a demodulating equipment, this demodulating equipment is coupled to this optical fiber low-noise frequency, is used for reading exemplary electrical signal and controlling the running of this optical fiber low-noise frequency。
The present invention is when performing dish face with satellite para-position, directly demodulating equipment can be coupled to F formula adapter to read exemplary electrical signal, judge that whether satellite disc para-position is successful according to this, engineering staff is not necessary to optical signal is gone back to the signal of telecommunication, recycling Set Top Box reads this signal of telecommunication, so can erection & lift Discussing Convenience；In addition, the output of the typical signal of telecommunication also may also provide signal quality and monitors, or the satellite reception information of other users, so also promotes the surcharge of optical fiber low-noise frequency；On the other hand, demodulating equipment also exportable supply power supply is to optical fiber low-noise frequency, and be adjusted by supplying the DC voltage size of power supply and ac voltage signal to control the running of optical fiber low-noise frequency, so can save traditional fiber lnb and demodulating equipment needs the respective problem finding power supply。Under the framework of the present invention, can effectively reduce inconvenience, acceleration installation effectiveness that optical fiber low-noise frequency dish is installed in the face of position。
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a satellite TV system of the embodiment of the present invention。
Fig. 2 is the schematic diagram of an optical fiber low-noise frequency of the embodiment of the present invention。
Fig. 3 is the schematic diagram of a power divider of the optical fiber low-noise frequency being applicable to Fig. 2。
Fig. 4 is the schematic diagram of a coupling circuit of the optical fiber low-noise frequency being applicable to Fig. 2。
Fig. 5 is the schematic diagram of a low noise amplification unit of the optical fiber low-noise frequency being applicable to Fig. 2。
Primary clustering symbol description:
1 satellite TV system
10 optical fiber low-noise frequency
11 first frequency reducing modules
12 second frequency reducing modules
13 the 3rd frequency reducing modules
14,113,123,133 gain amplifier
15 electrical/optical conversion equipments
16 power supply units
17 multiplexers
Flat equipment more than 18
19 demodulating equipments
110,120,130,131 low noise amplification unit
111,116,121,126,136 band filter
112,122,132 frequency demultiplier
114,124,134 agitator
115,125,135 mixer
137,138 power divider
101F formula adapter
102FC formula adapter
437 coupling circuit
511,512,513 low-noise amplifier
IN1 first input end
IN2 the second input
S1 the first intermediate-freuqncy signal
S2 the second intermediate-freuqncy signal
L1 the first local oscillated signal
L2 the second local oscillated signal
L3 the 3rd local oscillated signal
SO optical signal
The SE signal of telecommunication
SLG exemplary electrical signal
SAT satellite antenna
SV vertical polarization signal
SH horizontal polarization signals
SVH composite signal
PW supplies power supply
W, W1, W2 plain conductor
Detailed description of the invention
Refer to the schematic diagram of the satellite TV system 1 that Fig. 1, Fig. 1 are the embodiment of the present invention。Satellite TV system 1 includes a satellite antenna SAT, an optical fiber low-noise frequency 10, the equipment of flat more than one 18 and a demodulating equipment 19。Satellite antenna SAT is used for receiving high frequency satellite-signal, and high frequency satellite-signal can include vertical polarization signal SV and horizontal polarization signals SH。Optical fiber low-noise frequency 10 is coupled to satellite antenna SAT, it is used for being converted to vertical polarization signal SV and horizontal polarization signals SH the optical signal SO of intermediate frequency, and by its FC formula adapter 102, optical signal SO is exported to fiber optic cables, to be transferred to many flats equipment 18。Optical fiber low-noise frequency 10 is further coupled to demodulating equipment 19, be used for being converted to vertical polarization signal SV and horizontal polarization signals SH meet typical architecture an exemplary electrical signal SLG(as shown in Figure 2), and by its F formula adapter 101 by exemplary electrical signal SLG output to demodulating equipment 19, demodulating equipment 19 is made to can read exemplary electrical signal SLG, to demodulate the information contained by satellite-signal。Demodulating equipment 19 can also be used with and a supply power supply PW is sent to optical fiber low-noise frequency 10, to drive the running of optical fiber low-noise frequency 10。
It should be noted that the optical fiber low-noise frequency 10 of the present invention is a composite type optical fibre lnb, it includes the output of known optical signal, also provides for the output of the typical signal of telecommunication simultaneously。The signal of taking-up, mainly through taking out front end satellite-signal after frequency reducing module sub-path therein, is converted to the exemplary electrical signal SLG meeting typical architecture by optical fiber low-noise frequency 10。Under this framework, engineering staff, can directly by demodulating equipment 19(such as Set Top Box or monitoring apparatus when performing dish face with satellite para-position) it is coupled to F formula adapter 101 to read exemplary electrical signal SLG, judge that whether satellite disc para-position is successful according to this。Therefore, engineering staff is not necessary to go back to optical signal SO the signal of telecommunication, and recycling Set Top Box reads this signal of telecommunication, so can erection & lift Discussing Convenience。Meanwhile, demodulating equipment 19 also exportable supply power supply PW, to optical fiber low-noise frequency 10, so can save traditional fiber lnb and Set Top Box needs the respective problem finding power supply。
The schematic diagram of the optical fiber low-noise frequency 10 that Fig. 2, Fig. 2 are the embodiment of the present invention is refer to about the circuit structure of optical fiber low-noise frequency 10。Optical fiber low-noise frequency 10 can be used for a satellite TV system, and it includes one first frequency reducing module 11,1 second frequency reducing module 12, the 3rd frequency reducing module 13, multiplexer (Diplexer) 17, one gain amplifier 14, electrical/optical conversion equipment 15, power supply unit 16, FC formula adapter 102 and F formula adapter 101。In fig. 2, first frequency reducing module 11 and the second frequency reducing module 12 are coupled to satellite antenna SAT, it is used for respectively the satellite antenna SAT vertical polarization signal SV received and horizontal polarization signals SH frequency reducing being become the first intermediate frequency (IntermediateFrequency, IF) signal S1 and one second intermediate-freuqncy signal S2。Multiplexer 17 is coupled to the first frequency reducing module 11 and the second frequency reducing module 12, is used for the first intermediate-freuqncy signal S1 and the second intermediate-freuqncy signal S2 is synthesized a signal of telecommunication SE。Gain amplifier 14 is coupled to multiplexer 17, is used for amplifying signal of telecommunication SE。Electrical/optical conversion equipment 15 is coupled between gain amplifier 14 and FC formula adapter 102, is used for signal of telecommunication SE is converted to optical signal SO。Power supply unit 16 is coupled to F formula adapter 101, is used for receiving a supply power supply PW, to supply the power supply of each assembly in optical fiber low-noise frequency 10。3rd frequency reducing module 13 includes a first input end IN1 and one second input IN2, first input end IN1 is coupled to the first frequency reducing module 11, second input IN2 is coupled to the second frequency reducing module 12, it is used for drawing sections transverse polarized signal SV and horizontal polarization signals SH, and after being combined by vertical polarization signal SV and horizontal polarization signals SH, be converted to an exemplary electrical signal SLG。Then, exemplary electrical signal SLG is exported by F formula adapter 101。
First frequency reducing module 11 includes low noise amplification unit 110, band filter 111, frequency demultiplier 112 and a gain amplifier 113。Frequency demultiplier 112 includes agitator 114, mixer 115 and a band filter 116。Second frequency reducing module 12 includes low noise amplification unit 120, band filter 121, frequency demultiplier 122 and a gain amplifier 123。Frequency demultiplier 122 includes agitator 124, mixer 125 and a band filter 126。
For the first frequency reducing module 11, low noise amplification unit 110 is used for receiving and amplifying vertical polarization signal SV。Band filter 111 is coupled to low noise amplification unit 110, is used for filtering out high frequency band (10.7～12.75GHz) signal required in vertical polarization signal SV。Frequency demultiplier 112 is coupled between band filter 111 and gain amplifier 113, is used for the vertical polarization signal SV of high frequency is converted to the first intermediate-freuqncy signal S1, exports according to this to gain amplifier 113。Gain amplifier 113 is used for amplifying the first intermediate-freuqncy signal S1。In frequency demultiplier 112, agitator 114 is used for producing one first local oscillated signal L1(9.75GHz)。Mixer 115 is coupled to agitator 114 and band filter 111, is used for vertical polarization signal SV and the first local oscillated signal L1 is carried out smear。Band filter 116 is coupled to mixer 115, is used for the image frequency after filtering smear, to obtain the first required intermediate-freuqncy signal S1。Second frequency reducing module 12 is used for after horizontal polarization signals SH and the second local oscillated signal L2 smear, and frequency reducing becomes the second intermediate-freuqncy signal S2, and the circuit structure of the second frequency reducing module 12 and operation principles and the first frequency reducing module 11 are similar, are not repeated herein。
3rd frequency reducing module 13 includes low noise amplification unit 130 and 131, power divider 137, a 138 and frequency demultiplier 132。Power divider 137 is coupled to first input end IN1, is used for drawing sections transverse polarized signal SV。Low noise amplification unit 130 is coupled to power divider 137, is used for receiving and amplifying vertical polarization signal SV。Power divider 138 is coupled to the second input IN2, is used for drawing part of horizontal polarized signal SH。Low noise amplification unit 131 is coupled to power divider 138, is used for receiving and amplification level polarized signal SH。Low noise amplification unit 130 and 131 is coupled to each other, and is be combined with each other by vertical polarization signal SV and horizontal polarization signals SH, to produce a composite signal SVH。Frequency demultiplier 132 is coupled to low noise amplification unit 130 and 131, is used for composite signal SVH is converted to exemplary electrical signal SLG。
Frequency demultiplier 132 includes agitator 134, mixer 135, band filter 136 and a gain amplifier 133。Agitator 134 is used for producing one the 3rd local oscillated signal L3(9.75GHz and 10.6GHz)。Mixer 135 is coupled to agitator 134 and band filter 136, is used for composite signal SVH and the 3rd local oscillated signal L3 is carried out smear。Band filter 136 is coupled to mixer 135, is used for the image frequency after filtering smear, to obtain required exemplary electrical signal SLG。Gain amplifier 133 is coupled to band filter 136, is used for amplifying exemplary electrical signal SLG。
The frequency reducing conversion formula (unit: GHz) of following formula respectively first frequency reducing module the 11, second frequency reducing module 12 and the 3rd frequency reducing module 13:
SV(10.7～12.75)-L1(9.75)=S1(0.95～1.95～3.0)；
SH(10.7～12.75)-L2(7.30)=S2(3.40～4.4～5.45)；
SVH(10.7～11.7)-L3(9.75)=SLG(0.95～1.95)；
SVH(11.7～12.75)-L3(10.6)=SLG(1.1～2.15)。
Wherein, the first intermediate-freuqncy signal S1 includes low-frequency band vertical polarization signal (VerticalLow, VL) and high frequency band vertical polarization signal (VerticalHigh, VH)；Second intermediate-freuqncy signal S2 includes low-frequency band horizontal polarization signals (HorizontalLow, HL) and high frequency band horizontal polarization signals (HorizontalHigh, HH)；Exemplary electrical signal SLG includes high and low frequency band vertical polarization signal and high and low frequency band horizontal polarization signals。Following table lists the frequency of each frequency band polarized signal and the running voltage (unit: GHz) of corresponding circuits。
Owing to the size of its circuit voltage is depended in the running of typical architecture, therefore adjust the supply DC voltage size of power supply PW and ac voltage signal can control the running of optical fiber low-noise frequency 10。Specifically, engineering staff is in performing the dish face process with satellite para-position, supply power supply PW can be directly inputted to optical fiber low-noise frequency 10 by Set Top Box, it is adjusted by DC voltage size and the ac voltage signal of supply power supply PW, control the open and close of low noise amplification unit 130,131 in the 3rd frequency reducing module 13, enter the 3rd frequency reducing module 13 controlling vertical polarization signal SV and horizontal polarization signals SH respectively。Meanwhile, Set Top Box reads exemplary electrical signal SLG also by F formula adapter 101, judges that whether para-position is successful。For example, when Set Top Box inputs the supply voltage PW of 13 volts to optical fiber low-noise frequency 10, the exemplary electrical signal SLG of the 3rd frequency reducing module 13 output is high frequency band vertical polarization signal (1.1～2.15GHz)；When Set Top Box inputs the supply voltage PW of 18 volts to optical fiber low-noise frequency 10, exemplary electrical signal SLG is low-frequency band horizontal polarization signals HL(0.95～1.95GHz)；When Set Top Box inputs the supply voltage PW of 18 volts and 22KHz to optical fiber low-noise frequency 10, exemplary electrical signal SLG is high frequency band horizontal polarization signals HH(1.1～2.15GHz)。
In simple terms, the available 3rd frequency reducing module 13 of the optical fiber low-noise frequency 10 of the present invention draw vertically, horizontal polarization signals convert it to the exemplary electrical signal SLG of intermediate frequency。Simultaneously, available F formula adapter 101 exports the typical signal of telecommunication to Set Top Box, and input supply power supply PW to optical fiber low-noise frequency 10 by Set Top Box, make DC voltage size and a-c cycle, the output of running and exemplary electrical signal SLG to control the 3rd frequency reducing module 13 of Set Top Box its supply changeable power supply PW。Thus, when performing dish face with satellite para-position, the available Set Top Box of engineering staff reads exemplary electrical signal, judge para-position whether success and instant surveillance satellite signal quality and signal stabilization degree etc., and save the power supply needing traditionally to seek optical fiber low-noise frequency 10 and demodulating equipment 19 respectively。
Note that embodiments of the present invention are not limited to this embodiment, those of ordinary skill in the art should change according to this and modify, as long as meeting the objective of the present invention。For example, the form of power divider 137,138 is not limit, as it is shown on figure 3, the schematic diagram that Fig. 3 is power divider 137。The signal power of vertical polarization signal SV, on the signal path of vertical polarization signal SV, by plain conductor W1, W2 and parallel resistance between the two, is equally divided into two tunnels by power divider 137。
Power divider 137,138 can also one coupling circuit realiration, as shown in Figure 4, Fig. 4 is the schematic diagram of a coupling circuit 437。Coupling circuit 437 is on the signal path of vertical polarization signal SV, and be arranged in parallel a plain conductor W, direct-coupling vertical polarization signal SV, then by input to low noise amplification unit 130, to amplify the vertical polarization signal SV extracted。
Low noise amplification unit 110,120,130,131 can include at least one low-noise amplifier, is used for providing different grades of signal amplifying function, and designer according to actual demand, can adjust the quantity of low-noise amplifier。As it is shown in figure 5, the schematic diagram that Fig. 5 is a low noise amplification unit 110。Low noise amplification unit 110 includes low-noise amplifier 511,512 and 513, is used for providing three grades of signal amplifying functions to input signal。
On the other hand, 3rd frequency reducing module 13 primary draw sections transverse polarized signal SV and horizontal polarization signals SH, therefore the first input end IN1 of the 3rd frequency reducing module 13 can be coupled on the signal path between the frequency demultiplier 112 of satellite antenna SAT and the first frequency reducing module 11, and the second input IN2 can be coupled on the signal path between the frequency demultiplier 122 of satellite antenna SAT and the second frequency reducing module 12。Such as, first input end IN1 can be coupled between satellite antenna SAT and low noise amplification unit 110, between low noise amplification unit 110 and band filter 111 or between band filter 111 and mixer 115。Second input IN2 can be coupled between satellite antenna SAT and low noise amplification unit 120, between low noise amplification unit 120 and band filter 121 or between band filter 121 and mixer 125。
In sum, the optical fiber low-noise frequency of the present invention is a kind of composite type optical fibre lnb, and it includes the output of known optical signal, also provides for exemplary electrical signal output simultaneously。The signal of taking-up, mainly through taking out front end satellite-signal after frequency reducing module sub-path therein, is converted to the exemplary electrical signal meeting typical architecture by optical fiber low-noise frequency。Under this framework, demodulating equipment (such as Set Top Box or monitoring apparatus), when performing dish face with satellite para-position, directly can be coupled to F formula adapter 101 to read exemplary electrical signal by engineering staff, judges that whether satellite disc para-position is successful according to this。Therefore, engineering staff is not necessary to go back to optical signal the signal of telecommunication, and recycling Set Top Box reads this signal of telecommunication, so can erection & lift Discussing Convenience。In addition, the output of the typical signal of telecommunication also may also provide signal quality and monitors, or the satellite reception information of other users, so also promotes the surcharge of optical fiber low-noise frequency。On the other hand, demodulating equipment also exportable supply power supply is to optical fiber low-noise frequency, and be adjusted by supplying the DC voltage size of power supply and ac voltage signal to control the running of optical fiber low-noise frequency, so can save traditional fiber lnb and demodulating equipment needs the respective problem finding power supply。Under the framework of the present invention, dish face frame equipment, method is identical with traditional erection mode, can effectively reduce inconvenience, acceleration installation effectiveness that optical fiber low-noise frequency dish is installed in the face of position。
The foregoing is only presently preferred embodiments of the present invention, every equivalent variations made according to the scope of claims of the present invention and modification, all should belong to the covering scope of the present invention。
Claims (20)
1. an optical fiber low-noise frequency, this optical fiber low-noise frequency is used for a satellite TV system, and this optical fiber low-noise frequency includes:
One first frequency reducing module, this first frequency reducing module couples is in a satellite antenna of this satellite TV system, and the vertical polarization signal being used for receiving this satellite antenna is converted to one first intermediate-freuqncy signal；
One second frequency reducing module, this second frequency reducing module couples is in this satellite antenna, and the horizontal polarization signals being used for receiving this satellite antenna is converted to one second intermediate-freuqncy signal；And
One the 3rd frequency reducing module, 3rd frequency reducing module includes a first input end and one second input, this first input end is coupled between this satellite antenna and one first frequency demultiplier of this first frequency reducing module, this second input is coupled between this satellite antenna and one second frequency demultiplier of this second frequency reducing module, it is used for drawing this vertical polarization signal of part and this horizontal polarization signals and by after this vertical polarization signal and the combination of this horizontal polarization signals, is converted to an exemplary electrical signal；
Wherein, this optical fiber low-noise frequency provides this first intermediate-freuqncy signal, this second intermediate-freuqncy signal and this exemplary electrical signal simultaneously。
2. optical fiber low-noise frequency as claimed in claim 1, wherein this first frequency reducing module includes:
One low noise amplification unit, this low noise amplification unit is coupled to this satellite antenna, and this low noise amplification unit includes at least one low-noise amplifier, and this at least one low-noise amplifier is used for providing at least one stage signal to amplify；
One band filter, this band filter is coupled between this low noise amplification unit and this first frequency demultiplier, is used for this vertical polarization signal is filtered, and by this first frequency demultiplier, this vertical polarization signal is converted to this first intermediate-freuqncy signal；And
One gain amplifier, this gain amplifier is coupled to this first frequency demultiplier, is used for amplifying this first intermediate-freuqncy signal。
3. optical fiber low-noise frequency as claimed in claim 2, wherein this first frequency demultiplier includes:
One agitator, this agitator is used for producing one first local oscillated signal；
One mixer, this mixer is coupled to this agitator, is used for this vertical polarization signal and this first local oscillated signal are carried out smear；And
One band filter, this band filter is coupled to this mixer, is used for this vertical polarization signal after smear is filtered, so that this vertical polarization signal is converted to this first intermediate-freuqncy signal。
4. optical fiber low-noise frequency as claimed in claim 1, wherein this second frequency reducing module includes:
One low noise amplification unit, this low noise amplification unit is coupled to this satellite antenna, and this low noise amplification unit includes at least one low-noise amplifier, and this at least one low-noise amplifier is used for providing at least one stage signal to amplify；
One band filter, this band filter is coupled between this low noise amplification unit and this second frequency demultiplier, is used for this horizontal polarization signals is filtered, and by this second frequency demultiplier, this horizontal polarization signals is converted to this second intermediate-freuqncy signal；And
One gain amplifier, this gain amplifier is coupled to this second frequency demultiplier, is used for amplifying this second intermediate-freuqncy signal。
5. optical fiber low-noise frequency as claimed in claim 4, wherein this second frequency demultiplier includes:
One agitator, this agitator is used for producing one second local oscillated signal；
One mixer, this mixer is coupled to this agitator, is used for this horizontal polarization signals and this second local oscillated signal are carried out smear；And
One band filter, this band filter is coupled to this mixer, is used for this horizontal polarization signals after smear is filtered, so that this horizontal polarization signals to be converted to this second intermediate-freuqncy signal。
6. optical fiber low-noise frequency as claimed in claim 1, wherein the 3rd frequency reducing module includes:
One first low-noise amplifier, this first low-noise amplifier is coupled to this first input end, is used for receiving and amplifying this vertical polarization signal；
One second low-noise amplifier, this second low-noise amplifier is coupled to this second input, is used for receiving and amplifying this horizontal polarization signals；And
One the 3rd frequency demultiplier, the 3rd frequency demultiplier is coupled to this first, second low-noise amplifier, and to receive this vertical polarization signal and a composite signal of this horizontal polarization signals combination, this 3rd frequency demultiplier includes:
One agitator, this agitator is used for producing one the 3rd local oscillated signal；
One mixer, this mixer is coupled to this agitator, is used for this composite signal and the 3rd local oscillated signal are carried out smear；
One band filter, this band filter is coupled to this mixer, is used for this composite signal after smear is filtered, so that this composite signal is converted to this exemplary electrical signal；And
One gain amplifier, this gain amplifier is coupled to this band filter, is used for amplifying this exemplary electrical signal。
7. optical fiber low-noise frequency as claimed in claim 6, wherein the 3rd frequency reducing module also includes multiple power divider, the plurality of power divider is coupled to this first, second input, is used for drawing this vertical polarization signal of part and this horizontal polarization signals respectively。
8. optical fiber low-noise frequency as claimed in claim 6, wherein the 3rd frequency reducing module also includes multiple coupling circuit, and the plurality of coupling circuit is coupled to this first, second input, is used for drawing this vertical polarization signal of part and this horizontal polarization signals respectively。
9. optical fiber low-noise frequency as claimed in claim 1, this optical fiber low-noise frequency also includes:
One multiplexer, this multiplexer is coupled to this first, second frequency reducing module, is used for synthesizing this first, second intermediate-freuqncy signal, to produce a signal of telecommunication；
One gain amplifier, this gain amplifier is coupled to this multiplexer, is used for amplifying this signal of telecommunication；And
One electrical/optical conversion equipment, this electrical/optical conversion equipment is coupled to this gain amplifier, is used for being converted to this signal of telecommunication one optical signal, and output is to a FC formula adapter, to be transmitted by a Connectorized fiber optic cabling。
10. optical fiber low-noise frequency as claimed in claim 1, this optical fiber low-noise frequency also includes a power supply unit, this power supply unit is coupled to a F formula adapter, it is used for receiving the DC voltage that a demodulating equipment of this satellite system provides, for should the power supply of optical fiber low-noise frequency, and this F formula adapter is further coupled to the 3rd frequency reducing module, it is used for exporting this exemplary electrical signal, this exemplary electrical signal is read, to control the running of this optical fiber low-noise frequency for this demodulating equipment。
11. a satellite TV system, this satellite TV system includes:
One satellite antenna, this satellite antenna is used for receiving a vertical polarization signal and a horizontal polarization signals；
One optical fiber low-noise frequency, this optical fiber low-noise frequency includes:
One first frequency reducing module, this first frequency reducing module couples, in this satellite antenna, is used for this vertical polarization signal is converted to one first intermediate-freuqncy signal；
One second frequency reducing module, this second frequency reducing module couples, in this satellite antenna, is used for being converted to this horizontal polarization signals one second intermediate-freuqncy signal；And
One the 3rd frequency reducing module, 3rd frequency reducing module includes a first input end and one second input, this first input end is coupled between this satellite antenna and one first frequency demultiplier of this first frequency reducing module, this second input is coupled between this satellite antenna and one second frequency demultiplier of this second frequency reducing module, it is used for drawing this vertical polarization signal of part and this horizontal polarization signals and by after this vertical polarization signal and the combination of this horizontal polarization signals, is converted to an exemplary electrical signal；And
One demodulating equipment, this demodulating equipment is coupled to this optical fiber low-noise frequency, is used for reading exemplary electrical signal and controlling the running of this optical fiber low-noise frequency；
Wherein, this optical fiber low-noise frequency provides this first intermediate-freuqncy signal, this second intermediate-freuqncy signal and this exemplary electrical signal simultaneously。
12. satellite TV system as claimed in claim 11, wherein this first frequency reducing module includes:
One low noise amplification unit, this low noise amplification unit is coupled to this satellite antenna, and this low noise amplification unit includes at least one low-noise amplifier, and this at least one low-noise amplifier is used for providing at least one stage signal to amplify；
One band filter, this band filter is coupled between this low noise amplification unit and this first frequency demultiplier, is used for this vertical polarization signal is filtered, and by this first frequency demultiplier, this vertical polarization signal is converted to this first intermediate-freuqncy signal；And
One gain amplifier, this gain amplifier is coupled to this first frequency demultiplier, is used for amplifying this first intermediate-freuqncy signal。
13. satellite TV system as claimed in claim 12, wherein this first frequency demultiplier includes:
One agitator, this agitator is used for producing one first local oscillated signal；
One mixer, this mixer is coupled to this agitator, is used for this vertical polarization signal and this first local oscillated signal are carried out smear；And
One band filter, this band filter is coupled to this mixer, is used for this vertical polarization signal after smear is filtered, so that this vertical polarization signal is converted to this first intermediate-freuqncy signal。
14. satellite TV system as claimed in claim 11, wherein this second frequency reducing module includes:
One low noise amplification unit, this low noise amplification unit is coupled to this satellite antenna, and this low noise amplification unit includes at least one low-noise amplifier, and this at least one low-noise amplifier is used for providing at least one stage signal to amplify；
One band filter, this band filter is coupled between this low noise amplification unit and this second frequency demultiplier, is used for this horizontal polarization signals is filtered, and by this second frequency demultiplier, this horizontal polarization signals is converted to this second intermediate-freuqncy signal；And
One gain amplifier, this gain amplifier is coupled to this second frequency demultiplier, is used for amplifying this second intermediate-freuqncy signal。
15. satellite TV system as claimed in claim 14, wherein this second frequency demultiplier includes:
One agitator, this agitator is used for producing one second local oscillated signal；
One mixer, this mixer is coupled to this agitator, is used for this horizontal polarization signals and this second local oscillated signal are carried out smear；And
One band filter, this band filter is coupled to this mixer, is used for this horizontal polarization signals after smear is filtered, so that this horizontal polarization signals to be converted to this second intermediate-freuqncy signal。
16. satellite TV system as claimed in claim 11, wherein the 3rd frequency reducing module includes:
One first low-noise amplifier, this first low-noise amplifier is coupled to this first input end, is used for receiving and amplifying this vertical polarization signal；
One second low-noise amplifier, this second low-noise amplifier is coupled to this second input, is used for receiving and amplifying this horizontal polarization signals；And
One the 3rd frequency demultiplier, the 3rd frequency demultiplier is coupled to this first, second low-noise amplifier, and to receive this vertical polarization signal and a composite signal of this horizontal polarization signals combination, the 3rd frequency demultiplier includes:
One agitator, this agitator is used for producing one the 3rd local oscillated signal；
One mixer, this mixer is coupled to this agitator, is used for this composite signal and the 3rd local oscillated signal are carried out smear；
One band filter, this band filter is coupled to this mixer, is used for this composite signal after smear is filtered, so that this composite signal is converted to this exemplary electrical signal；And
One gain amplifier, this gain amplifier is coupled to this band filter, is used for amplifying this exemplary electrical signal。
17. satellite TV system as claimed in claim 16, wherein the 3rd frequency reducing module also includes multiple power divider, the plurality of power divider is coupled to this first, second input, is used for drawing this vertical polarization signal of part and this horizontal polarization signals respectively。
18. satellite TV system as claimed in claim 16, wherein the 3rd frequency reducing module also includes multiple coupling circuit, and the plurality of coupling circuit is coupled to this first, second input, is used for drawing this vertical polarization signal of part and this horizontal polarization signals respectively。
19. satellite TV system as claimed in claim 11, wherein this optical fiber low-noise frequency also includes:
One multiplexer, this multiplexer is coupled to this first, second frequency reducing module, is used for synthesizing this first, second intermediate-freuqncy signal, to produce a signal of telecommunication；
One gain amplifier, this gain amplifier is coupled to this multiplexer, is used for amplifying this signal of telecommunication；And
One electrical/optical conversion equipment, this electrical/optical conversion equipment is coupled to this gain amplifier, is used for being converted to this signal of telecommunication one optical signal, and output is to a FC formula adapter, to be transmitted by a Connectorized fiber optic cabling。
20. satellite TV system as claimed in claim 11, wherein this optical fiber low-noise frequency also includes a power supply unit, this power supply unit is coupled to a F formula adapter, it is used for receiving a DC voltage, for should the power supply of optical fiber low-noise frequency, and this F formula adapter is further coupled to the 3rd frequency reducing module, it is used for exporting this exemplary electrical signal, reads this exemplary electrical signal for this demodulating equipment。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210375833.7A CN103715989B (en) | 2012-09-29 | 2012-09-29 | Optical fiber low-noise frequency and satellite TV system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210375833.7A CN103715989B (en) | 2012-09-29 | 2012-09-29 | Optical fiber low-noise frequency and satellite TV system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103715989A CN103715989A (en) | 2014-04-09 |
| CN103715989B true CN103715989B (en) | 2016-06-22 |
Family
ID=50408655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210375833.7A Active CN103715989B (en) | 2012-09-29 | 2012-09-29 | Optical fiber low-noise frequency and satellite TV system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103715989B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW534542U (en) * | 2002-01-29 | 2003-05-21 | Prime Electronics & Satellitics Inc | Structure for preventing cross-modulation interference of satellite transmission |
| TWM261922U (en) * | 2004-09-20 | 2005-04-11 | Prime Electronics & Satellitics Inc | A low noise block downconverter of C-band and Ku-band |
| EP1181787B1 (en) * | 1999-08-30 | 2008-04-16 | Hughes Electronics Corporation | Single-lnb satellite data receiver |
| CN101366198A (en) * | 2006-01-25 | 2009-02-11 | 艾利森电话股份有限公司 | Method and apparatus for reducing combiner loss in a multi-sector, omni-base station |
| CN102255659A (en) * | 2010-05-17 | 2011-11-23 | 启碁科技股份有限公司 | Optical low-noise block downconverter, multi-dwelling unit equipment and related satellite television system |
| CN102468882A (en) * | 2010-11-12 | 2012-05-23 | 启碁科技股份有限公司 | Optical fiber low-noise frequency reducer capable of being quickly aligned |
-
2012
- 2012-09-29 CN CN201210375833.7A patent/CN103715989B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1181787B1 (en) * | 1999-08-30 | 2008-04-16 | Hughes Electronics Corporation | Single-lnb satellite data receiver |
| TW534542U (en) * | 2002-01-29 | 2003-05-21 | Prime Electronics & Satellitics Inc | Structure for preventing cross-modulation interference of satellite transmission |
| TWM261922U (en) * | 2004-09-20 | 2005-04-11 | Prime Electronics & Satellitics Inc | A low noise block downconverter of C-band and Ku-band |
| CN101366198A (en) * | 2006-01-25 | 2009-02-11 | 艾利森电话股份有限公司 | Method and apparatus for reducing combiner loss in a multi-sector, omni-base station |
| CN102255659A (en) * | 2010-05-17 | 2011-11-23 | 启碁科技股份有限公司 | Optical low-noise block downconverter, multi-dwelling unit equipment and related satellite television system |
| CN102468882A (en) * | 2010-11-12 | 2012-05-23 | 启碁科技股份有限公司 | Optical fiber low-noise frequency reducer capable of being quickly aligned |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103715989A (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8750708B2 (en) | Layout apparatus, radio apparatus, and method for communicating in an airplane | |
| US9838147B2 (en) | Line card, optical module, and optical network device | |
| CN103715989B (en) | Optical fiber low-noise frequency and satellite TV system | |
| EP2822199A1 (en) | Low noise block (LNB) with optical output | |
| TWI514785B (en) | Optical low-noise block down-converter and satellite television system | |
| KR101848080B1 (en) | Access point with integrated mobile communication antenna and unified optical repeater using the same | |
| CN212572563U (en) | Photoelectric radio frequency feeder line component applied to downlink communication link | |
| JP2006245803A (en) | Digital broadcasting signal transmitting system, its transmitting processor and receiving processor | |
| CN102209215A (en) | Reception device | |
| TWI449344B (en) | Optical lnb capable of fast position adjusting | |
| JP2006295497A (en) | Digital broadcast signal transmission system and transmission processor thereof | |
| CN114584158A (en) | 5G NR frequency shift double-channel MIMO power self-balancing system | |
| CN111884724A (en) | Photoelectric radio frequency feeder line component applied to downlink communication link | |
| JP4674128B2 (en) | Mixer | |
| JP2002152107A (en) | Radio subscriber station device | |
| CN102468882B (en) | Optical fiber low-noise frequency reducer capable of being quickly aligned | |
| CN205408057U (en) | Tuner module can be received by cascaded optic fibre to integration | |
| CN204442596U (en) | A kind of radio and television Set Top Box of built-in miniaturized optical receiver | |
| CN202513881U (en) | Ku-band low-noise frequency-down amplifier | |
| CN202475371U (en) | Two-output voltage-controlled oscillator loop signal distribution amplifier | |
| JP2011199768A (en) | Diagnosic system for joint receiving system | |
| JP2008311706A (en) | Optical network terminating device | |
| CN115483941A (en) | Miniaturized Ka frequency channel transceiver | |
| CN205657780U (en) | Novel satellite television frequency demultiplier | |
| CN205408077U (en) | Tuner module and STB circuit are received to integration optic fibre |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |