CN106101665A - A kind of satellite-signal processor - Google Patents
A kind of satellite-signal processor Download PDFInfo
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- CN106101665A CN106101665A CN201610638698.9A CN201610638698A CN106101665A CN 106101665 A CN106101665 A CN 106101665A CN 201610638698 A CN201610638698 A CN 201610638698A CN 106101665 A CN106101665 A CN 106101665A
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- signal
- satellite
- low
- gnss
- noise amplifier
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
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- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The present invention provides a kind of satellite-signal processor, solve existing satellite set top box to need through different pieces of information line, broadcasting satellite TV signal and framing signal are transferred to satellite set top box, the problem adding mounting complexity and installation cost, the present invention includes: tuner, receive broadcasting satellite TV signal, carry out broadcasting satellite TV signal being mixed processing and amplifying；Active antenna element, receives global navigation satellite system GNSS framing signal, and is amplified GNSS framing signal processing；IF signal processing unit, wide band noise level in the satellite television medium-frequency signal of tuner output is carried out attenuation processing, and the power of the wide band noise level of the satellite television medium-frequency signal after decay is less than predetermined threshold value with the difference of the power of the GNSS framing signal of active antenna element output；First combiner, the GNSS framing signal after amplifying and the satellite television medium-frequency signal after decay carry out closing road and process, and are transferred to satellite set top box.
Description
Technical field
The present invention relates to the technical field that satellite-signal processes, particularly relate to a kind of satellite-signal processor.
Background technology
General Bureau of Radio, Film and Television utilizes that satellite coverage rate is big, cover advantage with low cost, it is desirable to direct broadcasting satellite is as wired and ground
Supplementing and extension of face DTV, it is possible to cover its region not reached.TV signal is delivered to huge numbers of families, makes wired electricity
The TV programme about 58 sets can be freely watched in area depending on not reaching.
In order to prevent lawless people or tissue that live broadcasting satellite Set Top Box is arranged on the area that cable television reaches, cause wired
TV and the managerial confusion of live broadcasting satellite TV and unnecessary economic loss.Send out for the health of TV management system simultaneously
Exhibition, General Bureau of Radio, Film and Television is developing always and is updating the anti-live broadcasting satellite cracked management system.Its live broadcasting satellite management system includes that broadcast is straight
Broadcast the compositions such as Satellite Management center, Set Top Box, local administrative center.
In the exploitation and renewal of Set Top Box, prior art discloses with global positioning system (Global
Positioning System, GPS) the anti-method cracking function of location realization.
Realize in the anti-method cracking function with GPS system location, GPS module and tuner (Low Noise
Block, LNB) it is installed together one entirety of formation, powered to GPS by the feeder line of LNB, and by other data wire handle
The longitude and latitude signal of GPS output sends the main application software module of Set Top Box to, and the most main application software module reads safety storage
In card (smart card) the machine of having of storage should the information such as installation site, longitude and latitude scope, by contrast, it is judged that Set Top Box is
No it is arranged on legal region, if unlocking the signal of program stream in the output of the main application module in legal region, if in illegal district
The signal of territory main application module output losing lock program stream.But the method needs many installations one data line, and then adds installation
Complexity and installation cost.
Summary of the invention
It is an object of the invention to provide a kind of satellite-signal processor, in order to solve, existing satellite set top box is anti-cracks skill
In art, need through different pieces of information line, broadcasting satellite TV signal and framing signal are transferred to satellite set top box, and then increase
The problem of mounting complexity and installation cost.
To achieve these goals, the invention provides a kind of satellite-signal processor, including:
Tuner, is used for receiving broadcasting satellite TV signal, and described broadcasting satellite TV signal carries out mixing amplification
Process, output satellite tv-if signal；
Active antenna element, is used for receiving global navigation satellite system GNSS framing signal, and to described GNSS location letter
Number it is amplified processing, the GNSS framing signal after output processing and amplifying；
The IF signal processing unit being connected with described tuner, for the satellite television intermediate frequency exporting described tuner
Wide band noise level in signal carries out attenuation processing, the satellite television medium-frequency signal after output attenuatoin, wherein, and defending after decay
The described GNSS framing signal that the power of the wide band noise level of star tv-if signal exports with described active antenna element
The difference of power is less than predetermined threshold value；
The first combiner being connected with described IF signal processing unit and described active antenna element respectively, for putting
Described GNSS framing signal after great and the described satellite television medium-frequency signal after decay carry out closing road and process, and Bing Jianghe road processes
After signal be transferred to satellite set top box.
Wherein, described tuner includes:
Receive unit, be used for receiving broadcasting satellite TV signal；
The low-noise amplifier unit being connected with described reception unit, for putting described broadcasting satellite TV signal
Big process；
The phaselocked loop being connected with described low-noise amplifier unit and gain amplifier, for the broadcast after processing and amplifying
Satellite TV signal carries out being mixed processing and amplifying, obtains described satellite television medium-frequency signal.
Wherein, described reception unit includes:
Wave collecting device, for collecting the broadcasting satellite TV signal from feed reflection；
The waveguide being connected with described wave collecting device, is provided with left-handed probe and dextrorotation probe in described waveguide；
Wherein, described waveguide is by described left-handed probe and described dextrorotation probe, the broadcast collected by described wave collecting device
Satellite TV signal transmission is to described low-noise amplifier unit.
Wherein, described low-noise amplifier unit includes:
The left-handed passage low-noise amplifier being connected with described left-handed probe, for the broadcast received by described left-handed probe
Satellite TV signal carries out one-level processing and amplifying；
The dextrorotation passage low-noise amplifier being connected with described dextrorotation probe, for the broadcast received by described dextrorotation probe
Satellite TV signal carries out one-level processing and amplifying；
The second conjunction being connected with described left-handed passage low-noise amplifier and described dextrorotation passage low-noise amplifier respectively
Road device, for by the broadcasting satellite TV signal of described left-handed probe transmission and the broadcasting satellite TV of described dextrorotation probe transmission
Signal carries out closing road and processes；
The first low-noise amplifier being connected with described second combiner, the broadcasting satellite TV after involutory road processes
Signal carries out two grades of processing and amplifying.
Wherein, described satellite-signal processor also includes: printed circuit board, described low-noise amplifier unit, described lock
Phase ring and gain amplifier are both secured to the surface of described printed circuit board；And
Described satellite-signal processor also includes:
It is covered in the upper cover plate on described printed circuit board surface, and described upper cover plate is corresponding to described low-noise amplifier list
Phaselocked loop first, described is respectively arranged with cavity knot with the position of gain amplifier and described phaselocked loop and gain amplifier outfan
Structure.
Wherein, described upper cover plate is connected by screw is fixing with described printed circuit board.
Wherein, described satellite-signal processor also includes:
It is arranged at described printed circuit board surface, is connected with outfan and the satellite set top box of described first combiner respectively
Joint design, described joint design for by described first combiner close road process after signal be transferred to described subhost top
Box.
Wherein, described IF signal processing unit includes:
The the first low pass filter match circuit being connected with described tuner；
The low pass filter being connected with described first low pass filter match circuit；
The the second low pass filter match circuit being connected with described low pass filter and described first combiner.
Wherein, described active antenna element includes:
Ceramic antenna, for receiving the GNSS framing signal that aeronautical satellite issues；
The second low-noise amplifier being connected with described ceramic antenna, for being amplified described GNSS framing signal；
The SAW filter being connected with described second low-noise amplifier, for the described GNSS framing signal after amplifying
It is filtered processing, obtains the GNSS framing signal being in default band limits；
The gain amplifier being connected with described SAW filter, for the GNSS location letter being in default band limits
Number be amplified processing, output amplify after, the GNSS framing signal that is in default band limits.
The embodiment of the present invention has the advantages that
The satellite-signal processor of the embodiment of the present invention, in the satellite television that tuner is exported by IF signal processing unit
Frequently the wide band noise level in signal carries out attenuation processing, the satellite television medium-frequency signal after output attenuatoin；First combiner will
GNSS framing signal after active antenna element amplification and the satellite television medium-frequency signal after decay carry out closing road and process, and will close
Signal after road processes is transferred to satellite set top box, due to the merit of the wide band noise level of the satellite television medium-frequency signal after decay
Rate is less than predetermined threshold value with the difference of the power of the GNSS framing signal of active antenna element output, thus decreases broadband noise
The level impact on GNSS framing signal so that satellite set top box can from close the signal behind road demodulate TV program stream and
GNSS framing signal, it is not necessary to increase data wire, and then reduce mounting complexity and installation cost.
Accompanying drawing explanation
Fig. 1 is a structured flowchart of the satellite-signal processor of the embodiment of the present invention；
Fig. 2 is the circuit diagram of the satellite-signal processor of the embodiment of the present invention；
Fig. 3 is a structural representation of the satellite-signal processor of the embodiment of the present invention；
Fig. 4 is the another structural representation of the satellite-signal processor of the embodiment of the present invention；
Fig. 5 is a structural representation of upper cover plate in the embodiment of the present invention；
Fig. 6 is the another structural representation of upper cover plate in the embodiment of the present invention；
Fig. 7 is the structured flowchart of the IF signal processing unit of the embodiment of the present invention；
Fig. 8 is the satellite-signal processor connection diagram with Set Top Box of the embodiment of the present invention.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with being embodied as
Example and accompanying drawing are described in detail.
The embodiment provides a kind of satellite-signal processor, solve the anti-breaking techniques of existing satellite set top box
In, need through different pieces of information line, broadcasting satellite TV signal and framing signal are transferred to satellite set top box, and then add
Mounting complexity and the problem of installation cost.
The satellite-signal processor of the embodiment of the present invention, as it is shown in figure 1, include:
Tuner 1, is used for receiving broadcasting satellite TV signal, and described broadcasting satellite TV signal carries out mixing amplification
Process, output satellite tv-if signal.
Above-mentioned tuner LNB is conventional integrated low-converter.This LNB act as the wide of reception broadcast satellite
Broadcast satellite TV signal output satellite tv-if signal, may particularly include low-noise amplifier, combiner, local oscillator, mixing,
In the circuit such as put.Using demand to meet system, in the embodiment of the present invention, the gain of LNB is not less than 62dB.
Active antenna element 2, is used for receiving global navigation satellite system GNSS framing signal, and to described GNSS location letter
Number it is amplified processing, the GNSS framing signal after output processing and amplifying.
Here, active antenna specifically receives the signal of BD2, GPS L1, GLONASS frequency range, and export the BD2 after amplification,
The signal of GPS L1, GLONASS frequency range, may particularly include low-noise amplifier, SAW filter, in the circuit such as put.
The IF signal processing unit 3 being connected with described tuner 1, in the satellite television exporting described tuner
Frequently the wide band noise level in signal carries out attenuation processing, the satellite television medium-frequency signal after output attenuatoin, wherein, after decay
The described GNSS framing signal that the power of the wide band noise level of satellite television medium-frequency signal exports with described active antenna element
The difference of power less than predetermined threshold value.
During it should be noted that LNB normally works, the frequency range of the wide band noise level of output covers GNSS work
Frequency range, and wide band noise level output than GNSS active antenna output GNSS useful signal big more than the 35dB of power, by
In set top box for satellite receiver, the capacity of resisting disturbance of GNSS module is not reaching to the technical merit more than 30dB broadband noise signal,
So when LNB signal and GNSS signal come satellite set top box from a feeder line simultaneously, GNSS module is because of the broadband of LNB
Noise level is disturbed and can not resolved GNSS information.Here, predetermined threshold value can be specially 30dB.
In the specific embodiment of the present invention, IF signal processing unit 3 specifically can be mated electricity by low pass filter with periphery
Road forms, and the wide band noise level that IF signal processing unit exports LNB carries out attenuation processing, can meeting satellite set top box
While TV programme are play in demodulation, the noise level performance number of LNB output in GNSS working frequency range is reduced as far as possible, makes LNB
The noise level of output resolves GNSS information impact and diminishes satellite set top box GNSS module, thus meets and can position broadcasting satellite
The TV set-top box demand to GNSS signal.
The first combiner 4 being connected with described IF signal processing unit 3 and described active antenna element 2 respectively, is used for
Described GNSS framing signal after amplifying and the described satellite television medium-frequency signal after decay carry out closing road and process, Bing Jianghe road
Signal after process is transferred to satellite set top box.
Concrete, the first combiner 4 is transferred to satellite set top box by a feeder line by closing the signal after road processes, it is not necessary to
Increase data wire, save installation cost.
Here satellite TV set-top boxes, for having the Set Top Box resolving GNSS signal ability, may particularly include satellite wide
Broadcast radio TV signals receiving demodulation process module, GNSS module, secure storage unit, main application software module.
Receive after demodulation process module processes satellite broadcast signal solution regulating menstruation rear and form the required TV of display
Information；GNSS module receive GNSS signal carry out processing, algorithm resolve after export the longitude and latitude of current antenna position
Value；Secure storage unit stores the machine should the longitude and latitude scope of installation site, each chip serial number of the machine, the machine serial number etc.
Information；Main application software module reads the latitude and longitude value of GNSS module output antenna position, and by this latitude and longitude value and peace
In full memory element, the machine should the longitude and latitude value range of installation site compare, if GNSS module output antenna position
Latitude and longitude value in secure storage unit, the machine should be within the longitude and latitude value range of installation site, main application software module is defeated
Go out to unlock program stream signal, the most do not export the signal unlocking program stream.
The satellite-signal processor of the embodiment of the present invention, in the satellite television that tuner is exported by IF signal processing unit
Frequently the wide band noise level in signal carries out attenuation processing, the satellite television medium-frequency signal after output attenuatoin；First combiner will
GNSS framing signal after active antenna element amplification and the satellite television medium-frequency signal after decay carry out closing road and process, and will close
Signal after road processes is transferred to satellite set top box, due to the merit of the wide band noise level of the satellite television medium-frequency signal after decay
Rate is less than predetermined threshold value with the difference of the power of the GNSS framing signal of active antenna element output, thus decreases broadband noise
The level impact on GNSS framing signal so that satellite set top box can from close the signal behind road demodulate TV program stream and
GNSS framing signal, it is not necessary to increase data wire, and then reduce mounting complexity and installation cost.
Further, above-mentioned tuner 1 includes:
Receive unit, be used for receiving broadcasting satellite TV signal.
Shown in as shown in Figure 2, Figure 3 and Figure 4, this reception unit includes: wave collecting device 11, defends for collecting the broadcast from feed reflection
Star TV signal；The waveguide 12 being connected with described wave collecting device 11, is provided with left-handed probe 13 and dextrorotation in described waveguide 12
Probe 14；Wherein, described wave collecting device 11, by described left-handed probe 13 and described dextrorotation probe 14, is collected by described waveguide 12
Broadcasting satellite television signal transmission to low-noise amplifier unit.
The low-noise amplifier unit being connected with described reception unit, for putting described broadcasting satellite TV signal
Big process.
Here, low-noise amplifier unit may particularly include:
The left-handed passage low-noise amplifier 15 being connected with described left-handed probe 13, for receiving described left-handed probe 13
Broadcasting satellite TV signal carry out one-level processing and amplifying.This left-handed passage low-noise amplifier 15 is welded in printed circuit board
On.
The dextrorotation passage low-noise amplifier 16 being connected with described dextrorotation probe 14, for receiving described dextrorotation probe 14
Broadcasting satellite TV signal carry out one-level processing and amplifying.This dextrorotation passage low-noise amplifier 16 is welded in printed circuit board
On.Wherein, after left-handed probe 13, dextrorotation probe 14 receive broadcasting satellite TV signal micro-by 50 Ω on printed circuit board
Band wire is transferred to the low-noise amplifier of corresponding passage, and by left-handed passage low-noise amplifier 15 and dextrorotation passage low noise
Acoustic amplifier 16 is amplified being effectively improved the receiving sensitivity of LNB to broadcasting satellite TV signal.
Be connected with described left-handed passage low-noise amplifier 15 and described dextrorotation passage low-noise amplifier 16 respectively
Two combiners 17, for broadcasting satellite TV signal that described left-handed probe 13 is transmitted and described dextrorotation probe 14 transmit wide
Broadcast satellite TV signal to carry out closing road process.Concrete, this second combiner 17 is the two-in-one combiner of KU wave band, by printing electricity
The length and width of road plate microstrip line and shape design realize, mainly left-handed passage low-noise amplifier and described dextrorotation passage low noise
The two paths of signals of amplifier output synthesizes a road and exports to next stage amplifier.
The first low-noise amplifier 18 being connected with described second combiner 17, the broadcasting satellite after involutory road processes
TV signal carries out two grades of processing and amplifying.Here the signal the second combiner 17 exported is amplified again, again to improve LNB
Receiving sensitivity.
The phaselocked loop being connected with described first low-noise amplifier 18 and gain amplifier 19, after to processing and amplifying
Broadcasting satellite TV signal carries out being mixed processing and amplifying, obtains described satellite television medium-frequency signal.
Here, phaselocked loop is specially, with gain amplifier 19, the LNB chip welded on a printed circuit board, its internal bag
Include the local oscillation signal of 10.75GHz, frequency mixer, L-band amplifier, power supply comparison circuit, front-end amplifier power supply processing circuit
Deng.
Further, above-mentioned tuner also includes:
First power-switching circuit 20, this first power-switching circuit specifically for being converted into the direct current of 6V by supply voltage
Voltage, makes LNB normally work.
Further, described satellite-signal processor also includes: printed circuit board, described low-noise amplifier unit, institute
State phaselocked loop and gain amplifier 19 and be both secured to the surface of described printed circuit board；And
Described satellite-signal processor also includes:
It is covered in the upper cover plate 5 on described printed circuit board surface, and described upper cover plate 5 is corresponding to described low-noise amplifier
Unit, described phaselocked loop are respectively arranged with cavity with the position of gain amplifier and described phaselocked loop and gain amplifier outfan
Structure.
In a particular embodiment of the present invention, all electronic devices and components are both secured on this printed circuit board, and print electricity
Road plate is between waveguide cavity and upper cover plate, and realizes printed circuit board, waveguide cavity and upper cover by tapping screw 7
The compact siro spinning technology of plate, it is possible to effectively prevent from, due to signals leakiness, GNSS active antenna producing the phenomenon of signal disturbing.
In a particular embodiment of the present invention, as shown in Figure 5 and Figure 6, upper cover plate 5 wall thickness 1 millimeter, it is divided into four chambeies,
First cavity body structure 51 is to prevent left-handed passage low-noise amplifier and dextrorotation passage low-noise amplifier, with other radio circuit
Interfere.Second cavity body structure 52 is to prevent the first low-noise amplifier from interfering with other radio circuit.3rd cavity
Structure 53 is to prevent phaselocked loop and gain amplifier from forming interference with other radio circuit, the 4th cavity body structure 54 be prevent phase-locked
Ring forms interference with gain amplifier outfan with other radio circuit.
Upper cover plate 5 can be waterproof effect, and the cavity body structure of upper cover plate 5 is prevented from signal between each radio frequency unit
The generation of interference, prevent interference that active antenna produces by LNB output signal and prevent product output signal to active antenna product
Raw interference.
Further, as it is shown on figure 3, the satellite-signal processor of the embodiment of the present invention, also include:
It is arranged at described printed circuit board surface, respectively with the outfan of described first combiner 4 and satellite set top box even
The joint design 6 connect, described joint design 6 for described first combiner 4 is closed the signal after road processes be transferred to described in defend
Star Set Top Box.
This joint design is specially the F joint of signal output part, supply voltage input, and F joint is twisted with printed circuit board
Being close to connect, the central junction line of F joint welds on a printed circuit board simultaneously, plays signal output, the work of supply voltage input
With.Signal and the signal of IF signal processing unit output that first combiner exports active antenna element carry out closing Lu Conggong
Port output altogether, output signal passes through feeder line to satellite set top box after F joint.This first combiner is welded in printed circuit
On plate.
Further, the satellite-signal processor of the embodiment of the present invention, as it is shown in fig. 7, described IF signal processing unit 3
Including:
The the first low pass filter match circuit 31 being connected with described tuner 1.
The low pass filter 32 being connected with described first low pass filter match circuit 31.
The the second low pass filter match circuit 33 being connected with described low pass filter 32 and described first combiner 4.
Wide band noise level in the satellite television medium-frequency signal that tuner 1 is exported by this IF signal processing unit 3 is entered
Row attenuation processing, the satellite television medium-frequency signal of the reduction LNB output as far as possible interference to GNSS signal so that satellite set top box
TV program stream and GNSS framing signal can be demodulated, it is not necessary to increase data wire, and then reduce from the signal after closing road
Mounting complexity and installation cost.
Further, the satellite-signal processor of the embodiment of the present invention, described active antenna element 2 includes:
Ceramic antenna 21, for receiving the GNSS framing signal that aeronautical satellite issues.This ceramic antenna is the passive pottery of GNSS
Porcelain antenna, welds on a printed circuit board, and this GNSS passive ceramic antenna is respectively at printed circuit board with above-mentioned wave collecting device
Two ends.
The second low-noise amplifier 22 being connected with described ceramic antenna 21, for putting described GNSS framing signal
Greatly.
This second low-noise amplifier 22 welds on a printed circuit board, is put by the signal that ceramic antenna 21 exports
Greatly, the signal received due to ceramic antenna 21 is more weak, can be effectively improved active sky by this second low-noise amplifier 22
The receiving sensitivity of line unit.
The SAW filter 23 being connected with described second low-noise amplifier 22, for the described GNSS location after amplifying
Signal is filtered processing, and obtains the GNSS framing signal being in default band limits.
This SAW filter 23 welds on a printed circuit board, and Main Function is to filter the second low-noise amplifier 22
The useful signal of the non-navigational frequency range received, improves the signal quality of active antenna output signal, improves in satellite set top box
The effect processing signal of portion's GNSS module.
The gain amplifier 24 being connected with described SAW filter 23, for fixed to the GNSS being in default band limits
Position signal is amplified processing, GNSS framing signal after output amplification, that be in default band limits.
Here gain amplifier 24, on a printed circuit board, the signal after SAW filter 23 is processed enters again in welding
Row once amplifies, and improves the output of active antenna element, and then improves the process letter of the internal GNSS module of satellite set top box
Number effect.
Further, the satellite-signal processor of the embodiment of the present invention, described active antenna element 2 also includes:
Second source change-over circuit 25, this second source change-over circuit specifically for being converted into the direct current of 5V by supply voltage
Voltage, makes active antenna element normally work.
The operation principle of the satellite-signal processor of the embodiment of the present invention is illustrated below in conjunction with Fig. 2.
Active antenna element operation principle:
GNSS framing signal is received, owing to the signal of aeronautical satellite is to signal level ratio during ground by ceramic antenna 21
More weak, so use the second low-noise amplifier 22 to improve the receiving sensitivity of system in the rear end of ceramic antenna 21.GNSS
Framing signal through the second low-noise amplifier 22 export laggard enter SAW filter 23,23 non-GNSS signal of SAW filter
Export to gain amplifier 24 after processing, 24 GNSS signal of gain amplifier again amplify after give to the first combiner 4.
Tuner operation principle:
Broadcast satellite signals is exported by left-handed probe 13 and dextrorotation probe 14, at left-handed probe 13 and dextrorotation probe 14 liang
The outfan of individual probe respectively uses a low-noise amplifier (to be divided into for left-handed passage low-noise amplifier 15 and dextrorotation passage low
Noise amplifier 16) to improve the receiving sensitivity of LNB.Signal is low through left-handed passage low-noise amplifier 15 and dextrorotation passage
Give after noise amplifier 16 to the second combiner 17, be given to the first low-noise amplifier 18 after the second combiner 17 output and carry out again
After amplification, being given to phaselocked loop and gain amplifier 19, phaselocked loop and gain amplifier 19 first pass through Frequency mixing processing, giving to phase-locked
Then ring is mixed into the tv-if signal of 950MHz～1450MHz with 11.7GHz～the 12.2GHZz signal of gain amplifier
It is amplified output again to IF signal processing unit 3.Wherein, use in variant area meeting satellite set top box, defeated
The gain entering IF signal processing unit front signal can not be less than 62dB.
Electronic devices and components operationally electron motion produces thermal noise etc. and forms noise level, the noise electricity of tuner LNB
After mean longitude crosses superposition amplification, before entering IF signal processing unit 3, making an uproar of 950MHZ～the 2150MHz frequency range of LNB output
Vocal level power is more than-60dBm.And the output of active antenna element output GNSS frequency range is the least, relative to LNB output
Little more than the 30dB of noise level, makes GNSS module solution in satellite set top box not go out navigation signal.Intermediate frequency in the embodiment of the present invention
Signal processing unit 3 is by low pass filter and its peripheral circuit, in LNB output signal, and the electricity useless to satellite set top box
Processing depending on signal frequency range, GNSS frequency range is also in useless TV signal frequency range simultaneously, when handle in LNB output noise level
When the signal of GNSS frequency range suppresses more than 35dB, it is possible to fully meet satellite set top box GNSS module and resolve the demand of signal, and
Satellite television medium-frequency signal after output process is to the first combiner 4.
Export after 3 signal processing of IF signal processing unit to any one port of the first combiner 4 not common port,
The GNSS framing signal of gain amplifier output enters the another port of the first combiner 4 not common port, and two signals are simultaneously
Exporting from the public port of the first combiner, public port is connected with joint design 6.
As shown in Figure 8, after the joint design of satellite-signal processor is by feeder line output GNSS framing signal and process
Satellite television medium-frequency signal to having the satellite TV set-top boxes of positioning function, this satellite TV set-top boxes.This satellite TV set
Top box may particularly include satellite radio television signal, and to receive demodulation process module, GNSS module, secure storage unit, main application soft
Part module.
Receive after demodulation process module processes satellite broadcast signal solution regulating menstruation rear and form the required TV of display
Information；GNSS module receive GNSS signal carry out processing, algorithm resolve after export the longitude and latitude of current antenna position
Value；Secure storage unit stores the machine should the longitude and latitude scope of installation site, each chip serial number of the machine, the machine serial number etc.
Information；Main application software module reads the latitude and longitude value of GNSS module output antenna position, and by this latitude and longitude value and peace
In full memory element, the machine should the longitude and latitude value range of installation site compare, if GNSS module output antenna position
Latitude and longitude value in secure storage unit, the machine should be within the longitude and latitude value range of installation site, main application software module is defeated
Go out to unlock program stream signal to display, the most do not export the signal unlocking program stream.
The satellite-signal processor of the embodiment of the present invention, in the satellite television that tuner is exported by IF signal processing unit
Frequently the wide band noise level in signal carries out attenuation processing, the satellite television medium-frequency signal after output attenuatoin；First combiner will
GNSS framing signal after active antenna element amplification and the satellite television medium-frequency signal after decay carry out closing road and process, and will close
Signal after road processes is transferred to satellite set top box, due to the merit of the wide band noise level of the satellite television medium-frequency signal after decay
Rate is less than predetermined threshold value with the difference of the power of the GNSS framing signal of active antenna element output, thus decreases broadband noise
The level impact on GNSS framing signal so that satellite set top box can from close the signal behind road demodulate TV program stream and
GNSS framing signal, it is not necessary to increase data wire, and then reduce mounting complexity and installation cost.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. a satellite-signal processor, it is characterised in that including:
Tuner, is used for receiving broadcasting satellite TV signal, and carries out described broadcasting satellite TV signal being mixed processing and amplifying,
Output satellite tv-if signal；
Active antenna element, is used for receiving global navigation satellite system GNSS framing signal, and enters described GNSS framing signal
Row processing and amplifying, the GNSS framing signal after output processing and amplifying；
The IF signal processing unit being connected with described tuner, for the satellite television medium-frequency signal exporting described tuner
In wide band noise level carry out attenuation processing, the satellite television medium-frequency signal after output attenuatoin, wherein, satellite after decay electricity
Power depending on the described GNSS framing signal that the power of the wide band noise level of intermediate-freuqncy signal exports with described active antenna element
Difference less than predetermined threshold value；
The first combiner being connected with described IF signal processing unit and described active antenna element respectively, after amplifying
Described GNSS framing signal and decay after described satellite television medium-frequency signal carry out close road process, Bing Jianghe road process after
Signal is transferred to satellite set top box.
Satellite-signal processor the most according to claim 1, it is characterised in that described tuner includes:
Receive unit, be used for receiving broadcasting satellite TV signal；
The low-noise amplifier unit being connected with described reception unit, for being amplified place to described broadcasting satellite TV signal
Reason；
The phaselocked loop being connected with described low-noise amplifier unit and gain amplifier, for the broadcasting satellite after processing and amplifying
TV signal carries out being mixed processing and amplifying, obtains described satellite television medium-frequency signal.
Satellite-signal processor the most according to claim 2, it is characterised in that described reception unit includes:
Wave collecting device, for collecting the broadcasting satellite TV signal from feed reflection；
The waveguide being connected with described wave collecting device, is provided with left-handed probe and dextrorotation probe in described waveguide；
Wherein, described waveguide is by described left-handed probe and described dextrorotation probe, the broadcasting satellite collected by described wave collecting device
Television signal transmission is to described low-noise amplifier unit.
Satellite-signal processor the most according to claim 3, it is characterised in that described low-noise amplifier unit includes:
The left-handed passage low-noise amplifier being connected with described left-handed probe, for the broadcasting satellite received by described left-handed probe
TV signal carries out one-level processing and amplifying；
The dextrorotation passage low-noise amplifier being connected with described dextrorotation probe, for the broadcasting satellite received by described dextrorotation probe
TV signal carries out one-level processing and amplifying；
The second combiner being connected with described left-handed passage low-noise amplifier and described dextrorotation passage low-noise amplifier respectively,
For by the broadcasting satellite TV signal of described left-handed probe transmission and the broadcasting satellite TV signal of described dextrorotation probe transmission
Carry out closing road to process；
The first low-noise amplifier being connected with described second combiner, the broadcasting satellite TV signal after involutory road processes
Carry out two grades of processing and amplifying.
Satellite-signal processor the most according to claim 2, it is characterised in that described satellite-signal processor also includes:
Printed circuit board, described low-noise amplifier unit, described phaselocked loop and gain amplifier are both secured to described printed circuit board
Surface；And
Described satellite-signal processor also includes:
Be covered in the upper cover plate on described printed circuit board surface, and described upper cover plate corresponding to described low-noise amplifier unit,
Described phaselocked loop is respectively arranged with cavity body structure with the position of gain amplifier and described phaselocked loop and gain amplifier outfan.
Satellite-signal processor the most according to claim 5, it is characterised in that described upper cover plate and described printed circuit board
Connect by screw is fixing.
Satellite-signal processor the most according to claim 5, it is characterised in that described satellite-signal processor also includes:
Be arranged at described printed circuit board surface, respectively with connecing that the outfan of described first combiner and satellite set top box are connected
Header structure, described joint design is transferred to described satellite set top box for described first combiner is closed the signal after road processes.
Satellite-signal processor the most according to claim 1, it is characterised in that described IF signal processing unit includes:
The the first low pass filter match circuit being connected with described tuner；
The low pass filter being connected with described first low pass filter match circuit；
The the second low pass filter match circuit being connected with described low pass filter and described first combiner.
Satellite-signal processor the most according to claim 1, it is characterised in that described active antenna element includes:
Ceramic antenna, for receiving the GNSS framing signal that aeronautical satellite issues；
The second low-noise amplifier being connected with described ceramic antenna, for being amplified described GNSS framing signal；
The SAW filter being connected with described second low-noise amplifier, for carrying out the described GNSS framing signal after amplifying
Filtering Processing, obtains the GNSS framing signal being in default band limits；
The gain amplifier being connected with described SAW filter, for entering the GNSS framing signal being in default band limits
Row processing and amplifying, GNSS framing signal after output amplification, that be in default band limits.
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| CN201610638698.9A CN106101665B (en) | 2016-08-05 | 2016-08-05 | Satellite signal processor |
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| CN201610638698.9A CN106101665B (en) | 2016-08-05 | 2016-08-05 | Satellite signal processor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997980A (en) * | 2017-05-10 | 2017-08-01 | 四川省视频电子有限责任公司 | For satellite TV signal and the anti-tampering combiner and its system of positioning signal |
| CN108417987A (en) * | 2018-02-01 | 2018-08-17 | 北京爱科迪通信技术股份有限公司 | A kind of beacon thresholding for satellite antenna system determines method |
| CN109561269A (en) * | 2018-12-04 | 2019-04-02 | 安徽站乾科技有限公司 | A kind of simplicity based on automatic identification tuner relevant parameter searches star device |
| CN109587473A (en) * | 2018-12-04 | 2019-04-05 | 安徽站乾科技有限公司 | A kind of self detection device of the failure of satellite TV system |
| CN109617562A (en) * | 2018-12-05 | 2019-04-12 | 安徽站乾科技有限公司 | A method of reducing filter power loss |
| CN109788259A (en) * | 2018-12-06 | 2019-05-21 | 安徽站乾科技有限公司 | A kind of tuner automatically switches the method and system of satellite television |
| CN111147827A (en) * | 2019-12-27 | 2020-05-12 | 深圳市北斗万方信息技术有限公司 | Signal processing method and device and digital video conversion equipment |
| CN111294573A (en) * | 2020-02-21 | 2020-06-16 | 珠海迈科智能科技股份有限公司 | Satellite television signal receiving device and modulation method |
| CN113657570A (en) * | 2021-08-24 | 2021-11-16 | 泰斗微电子科技有限公司 | Smart card |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081306A (en) * | 1992-07-16 | 1994-01-26 | 烟台开发区意埃伊股份有限公司 | Satellite immediate frequency cable television network |
| CN1136243A (en) * | 1995-05-17 | 1996-11-20 | 郑永裕 | Tuner for receiving feedback frequency compresed signal from satellite |
| US20050206567A1 (en) * | 2004-02-26 | 2005-09-22 | Funai Electric Co., Ltd. | System for transmitting a signal for positioning and method for producing the system |
| US20050273821A1 (en) * | 2004-05-14 | 2005-12-08 | Hundley Michael R | Wireless connection system for a satellite dish and receiver |
| US20080055014A1 (en) * | 2006-08-29 | 2008-03-06 | Texas Instruments Incorporated | Local oscillator with non-harmonic ratio between oscillator and RF frequencies using wideband modulation spectral replicas |
| US20080136969A1 (en) * | 2006-12-07 | 2008-06-12 | Prime Electronics And Satellitics Incorporation | Satellite signal recieve and method of conditionally accessing digital tv program by using the same |
| CN201142720Y (en) * | 2007-12-29 | 2008-10-29 | 深圳市同洲电子股份有限公司 | Radio-frequency head, satellite digital television signal receiving and processing circuit and receiving system |
| WO2013065890A1 (en) * | 2011-11-04 | 2013-05-10 | 주식회사 위월드 | Automatic positioning antenna system for use in multi-satellite reception, and method for tracking satellites |
| CN103399329A (en) * | 2013-08-20 | 2013-11-20 | 中国科学院微电子研究所 | GNSS receiver and intermediate frequency data processing method thereof |
| CN105657509A (en) * | 2016-01-26 | 2016-06-08 | 泰斗微电子科技有限公司 | LNB (Low Noise Amplifier) module for receiving satellite television signal and corresponding satellite television set top box |
| CN105721918A (en) * | 2016-03-25 | 2016-06-29 | 泰斗微电子科技有限公司 | Satellite television set top box and corresponding control method |
| CN105744333A (en) * | 2016-03-18 | 2016-07-06 | 泰斗微电子科技有限公司 | LNB module used for receiving satellite television signals and corresponding satellite television set top box |
| CN205961329U (en) * | 2016-08-05 | 2017-02-15 | 北京华信泰科技股份有限公司 | Satellite signal processor |
-
2016
- 2016-08-05 CN CN201610638698.9A patent/CN106101665B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081306A (en) * | 1992-07-16 | 1994-01-26 | 烟台开发区意埃伊股份有限公司 | Satellite immediate frequency cable television network |
| CN1136243A (en) * | 1995-05-17 | 1996-11-20 | 郑永裕 | Tuner for receiving feedback frequency compresed signal from satellite |
| US20050206567A1 (en) * | 2004-02-26 | 2005-09-22 | Funai Electric Co., Ltd. | System for transmitting a signal for positioning and method for producing the system |
| US20050273821A1 (en) * | 2004-05-14 | 2005-12-08 | Hundley Michael R | Wireless connection system for a satellite dish and receiver |
| US20080055014A1 (en) * | 2006-08-29 | 2008-03-06 | Texas Instruments Incorporated | Local oscillator with non-harmonic ratio between oscillator and RF frequencies using wideband modulation spectral replicas |
| US20080136969A1 (en) * | 2006-12-07 | 2008-06-12 | Prime Electronics And Satellitics Incorporation | Satellite signal recieve and method of conditionally accessing digital tv program by using the same |
| CN201142720Y (en) * | 2007-12-29 | 2008-10-29 | 深圳市同洲电子股份有限公司 | Radio-frequency head, satellite digital television signal receiving and processing circuit and receiving system |
| WO2013065890A1 (en) * | 2011-11-04 | 2013-05-10 | 주식회사 위월드 | Automatic positioning antenna system for use in multi-satellite reception, and method for tracking satellites |
| CN103399329A (en) * | 2013-08-20 | 2013-11-20 | 中国科学院微电子研究所 | GNSS receiver and intermediate frequency data processing method thereof |
| CN105657509A (en) * | 2016-01-26 | 2016-06-08 | 泰斗微电子科技有限公司 | LNB (Low Noise Amplifier) module for receiving satellite television signal and corresponding satellite television set top box |
| CN105744333A (en) * | 2016-03-18 | 2016-07-06 | 泰斗微电子科技有限公司 | LNB module used for receiving satellite television signals and corresponding satellite television set top box |
| CN105721918A (en) * | 2016-03-25 | 2016-06-29 | 泰斗微电子科技有限公司 | Satellite television set top box and corresponding control method |
| CN205961329U (en) * | 2016-08-05 | 2017-02-15 | 北京华信泰科技股份有限公司 | Satellite signal processor |
Non-Patent Citations (1)
| Title |
|---|
| CHANG DONG PIL等: ""Design of RF Front-end for High Precision GNSS Receiver"", 《JOURNAL OF SATELLITE, INFORMATION AND COMMUNICATIONS》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106997980A (en) * | 2017-05-10 | 2017-08-01 | 四川省视频电子有限责任公司 | For satellite TV signal and the anti-tampering combiner and its system of positioning signal |
| CN108417987A (en) * | 2018-02-01 | 2018-08-17 | 北京爱科迪通信技术股份有限公司 | A kind of beacon thresholding for satellite antenna system determines method |
| CN108417987B (en) * | 2018-02-01 | 2020-09-08 | 北京爱科迪通信技术股份有限公司 | Beacon threshold determination method for satellite antenna system |
| CN109561269A (en) * | 2018-12-04 | 2019-04-02 | 安徽站乾科技有限公司 | A kind of simplicity based on automatic identification tuner relevant parameter searches star device |
| CN109587473A (en) * | 2018-12-04 | 2019-04-05 | 安徽站乾科技有限公司 | A kind of self detection device of the failure of satellite TV system |
| CN109617562A (en) * | 2018-12-05 | 2019-04-12 | 安徽站乾科技有限公司 | A method of reducing filter power loss |
| CN109788259A (en) * | 2018-12-06 | 2019-05-21 | 安徽站乾科技有限公司 | A kind of tuner automatically switches the method and system of satellite television |
| CN111147827A (en) * | 2019-12-27 | 2020-05-12 | 深圳市北斗万方信息技术有限公司 | Signal processing method and device and digital video conversion equipment |
| CN111147827B (en) * | 2019-12-27 | 2021-11-02 | 深圳市北斗万方信息技术有限公司 | Signal processing method and device and digital video conversion equipment |
| CN111294573A (en) * | 2020-02-21 | 2020-06-16 | 珠海迈科智能科技股份有限公司 | Satellite television signal receiving device and modulation method |
| CN111294573B (en) * | 2020-02-21 | 2021-06-18 | 珠海迈科智能科技股份有限公司 | Satellite television signal receiving device and modulation method |
| CN113657570A (en) * | 2021-08-24 | 2021-11-16 | 泰斗微电子科技有限公司 | Smart card |
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