CN205490510U - Be suitable for low noise down converter and satellite receiving system of use of multichannel satellite receiver - Google Patents
Be suitable for low noise down converter and satellite receiving system of use of multichannel satellite receiver Download PDFInfo
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- CN205490510U CN205490510U CN201620176425.2U CN201620176425U CN205490510U CN 205490510 U CN205490510 U CN 205490510U CN 201620176425 U CN201620176425 U CN 201620176425U CN 205490510 U CN205490510 U CN 205490510U
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Abstract
The utility model discloses a be suitable for low noise down converter and satellite receiving system of use of multichannel satellite receiver, low noise down converter earlier is 300~2350MHz intermediate frequency signal with 10.7~12.75GHz satellite signal drop frequently, then by electing the appointed TV program intermediate frequency signal corresponding to appointed TV program information among 300~2350MHz intermediate frequency signal, to designate TV program intermediate frequency signal and controllable local oscillator signal mixing again is secondary frequency conversion, wherein, the frequency of appointed TV program information and controllable local oscillator signal is appointed by the satellite receiver that sends the order of secondary frequency conversion control to the coaxial cable interface, make control frequency modulation to appointed interior output of frequency range of satellite receiver that in the ku band satellite signal an arbitrary TV program signal can the hard to bear low noise satellite receiver that down converter connects. The utility model discloses can supply a plurality of user's independent utilities, and saving cable laying cost that can be great and user installation cost, the outdoor partial installation complexity of lowering system simultaneously.
Description
Technical field
This utility model relates to a kind of low noise block downconverter being applicable to the use of multiple-link satellite receiver, and,
Apply the satellite receiving system of this low noise block downconverter.
Background technology
In the low noise block downconverter circuit design of tradition Ku wave band, general employing 9.75/10.60GHz two
Individual local frequency, built-in 0/22KHz switching circuit, the 0/22KHz arteries and veins exported by satellite television receiver
Rush signal and select its local frequency low, high respectively, cut with the 13/18V voltage of satellite television receiver simultaneously
Change the satellite-signal horizontally or vertically polarized, be transferred to satellite television receiver by coaxial cable, it is achieved Ku
Wave band program Whole frequency band receives.But in traditional low noise block downconverter design, have employed
9.75/10.60GHz two local frequencies, cause circuit design to become complicated, and add in production process
In testing time.And owing to each delivery outlet of custom low noise low-converter is required for by single independence
Coaxial cable from open air be connected to indoor a satellite television receiver use, then make in the face of dress
There is multiple satellite television receiver user, it is necessary to the many descending cables of independence, even need under multiple low noise
Converter.Add the complexity of installation, and need to pay the highest cable laying cost, simultaneously for that
A little commercial user and domestic consumers having laid cable, need again to reequip circuit, expensive, engineering
Measure the biggest.So in traditional low noise block downconverter circuit design, either raw in plant design
Product process, or in the case of needs meet multi-user's use, all there is many deficiencies.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of multiple-link satellite receiver that is applicable to use
Low noise block downconverter, and, apply the satellite receiving system of this low noise block downconverter.
Solving above-mentioned technical problem, the technical scheme that this utility model is used is as follows:
A kind of be suitable to the low noise block downconverter that multiple-link satellite receiver uses, be provided with antenna probe, low noise is put
Big device, the Ku wave band down coversion radio frequency chip of 10.40GHz local oscillation signal can be produced and for connecing with satellite
The coaxial cable interface of receipts machine communication, described antenna probe connects Ku ripple by low-noise amplifier described in two-stage
The input of section down coversion radio frequency chip；Described Ku wave band down coversion radio frequency chip is by input
10.7～12.75GHz satellite-signals are mixed into 300～2350MHz intermediate frequency letters with described 10.40GHz local oscillation signal
Export after number, it is characterised in that: described low noise block downconverter is additionally provided with double conversion control circuit, band leads to
Wave filter, signal amplification circuit and for controlling for described Ku wave band down coversion radio frequency chip and double conversion
The power circuit that circuit is powered；Described double conversion control circuit be provided with automatic gain amplifier, analog-digital converter,
Digital channel stacked switch, frequency mixer, digital to analog converter, the doubler that controlled local oscillation signal can be produced and tool
There are the microprocessor of satellite television receiver communication protocol codec functions, described Ku wave band down coversion radio frequency core
The outfan of sheet passes sequentially through a described automatic gain amplifier and a described analog-digital converter connects described
The input of digital channel stacked switch, an input of described frequency mixer connects described digital channel stacking and opens
Outfan, another input of closing connect the outfan of described doubler, outfan passes sequentially through described digital-to-analogue
Transducer and band filter connect described coaxial cable interface, and the read port of described microprocessor connects described same
Shaft cable interface, TV programme select outfan to connect the control end of described digital channel stacked switch, frequency control
Outfan processed connects the control end of described doubler；Described microprocessor can read described coaxial electrical by read port
The double conversion control command that cable interface arrives, wherein, described double conversion control command comprises described controlled
The frequency of local oscillation signal and designated television programme information；Described microprocessor can control described digital channel stacking and open
Close and select corresponding to institute from 300 received～2350MHz intermediate-freuqncy signal by described double conversion control command
State the designated television program intermediate-freuqncy signal output of designated television programme information, and described microprocessor can control institute
State doubler and produce the controlled local oscillation signal of respective frequencies by described double conversion control command so that described mixing
Described designated television program intermediate-freuqncy signal is mixed into double conversion signal by device with controlled local oscillation signal, and by this two
After secondary frequency variation signal passes sequentially through described digital to analog converter and band filter, warp is defeated by described coaxial cable interface
Go out.
As a kind of embodiment of the present utility model, described antenna probe include vertical polarized antenna probe and
Horizontally-polarized antenna probe, described Ku wave band down coversion radio frequency chip is bipolarity Ku wave band down coversion radio frequency
Chip, the input of this bipolarity Ku wave band down coversion radio frequency chip includes vertical polarization input and level pole
Change input, outfan includes vertical polarization outfan and horizontal polarization outfan, and described digital channel stacking is opened
The input closed includes vertical polarization input and horizontal polarization input；Described vertical polarized antenna probe passes through
Low-noise amplifier described in two-stage connects the vertical polarization input of described bipolarity Ku wave band down coversion radio frequency chip
End, described horizontally-polarized antenna probe connects described bipolarity Ku wave band by low-noise amplifier described in two-stage
The horizontal polarization input of down coversion radio frequency chip, described bipolarity Ku wave band down coversion radio frequency chip vertical
Polarizing output passes sequentially through a described automatic gain amplifier and a described analog-digital converter connects described
The vertical polarization input of digital channel stacked switch, horizontal polarization outfan pass sequentially through a described automatic increasing
Benefit amplifier and the horizontal polarization input of a described analog-digital converter described digital channel stacked switch of connection；
Described bipolarity Ku wave band down coversion radio frequency chip is by 10.7～12.75GHz vertical polarization satellite-signals of input
Export be mixed into 300～2350MHz intermediate-freuqncy signals of vertical polarization with described 10.40GHz local oscillation signal after,
10.7～12.75GHz horizontal polarization satellite-signals of input are mixed into water with described 10.40GHz local oscillation signal
Export after 300～2350MHz intermediate-freuqncy signals of mean pole.
As a kind of embodiment of the present utility model, described satellite television receiver communication protocol is DiSEqC
Any one in 1.x agreement, DiSEqC 2.x agreement, EN50494 agreement and EN50607 agreement.
As a kind of embodiment of the present utility model, described coaxial cable interface is F head interface.
A kind of satellite receiving system, it is characterised in that: described satellite receiving system includes a claim 1
To the low noise block downconverter described in 4 any one, a power divider and at least one DVB,
Wherein, described power divider has a main road port and at least equal with described DVB quantity propping up
Road port；It is equal that described low noise block downconverter is arranged on outdoor, described power divider and Ge Tai DVB
Being arranged on indoor, the coaxial cable interface of described low noise block downconverter connects described merit by a descending cable
The main road port of rate allotter, each described DVB all connects described power by a house cable
The tributary port of allotter.
Compared with prior art, this utility model has the advantages that
First, 10.7～12.75GHz satellite-signal frequency reducings are first by low noise block downconverter of the present utility model
300～2350MHz intermediate-freuqncy signals, are then selected corresponding to designated television by 300～2350MHz intermediate-freuqncy signals
The designated television program intermediate-freuqncy signal of programme information, then by designated television program intermediate-freuqncy signal and controlled local oscillation signal
It is mixed down double conversion signal, wherein, it is intended that the frequency of TV program information and controlled local oscillation signal is by coaxially
Cable interface sends the DVB of double conversion control command and specifies so that in Ku band satellite signal
The control of any one TV programme signal energy connect DVB of hard to bear low noise block downconverter is tuned to defend
Output in the frequency range that star receiver is specified.
Second, satellite receiving system of the present utility model uses above-mentioned low noise block downconverter, is distributed by power
Device can connect multiple stage DVB, and when satellite receiving system of the present utility model uses, by each
DVB controls TV programme signal to be received and is tuned in different frequency ranges so that low noise
Low-converter can export each DVB TV programme signal to be received simultaneously, and makes each electricity
Separate depending on programme signal, do not interfere with each other.
3rd, when satellite receiving system of the present utility model is installed, it is only necessary to will become under an above-mentioned low noise
Frequently device is arranged on outdoor, and a power divider and multiple stage DVB are arranged on indoor, then with a connection
In descending cable that the length of outdoor low noise block downconverter and indoor power allotter is longer and Duo Gen junction chamber
The house cable that the length of power divider and indoor DVB is shorter can complete to connect, compared to existing
Satellite receiving system save the descending cable that many root lengths degree is longer, therefore, satellite reception of the present utility model
System independently for multiple users and can greatly be saved cable laying cost and becomes with user installation simultaneously
Originally the installation complexity of system chambers outer portion, is reduced.
Accompanying drawing explanation
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings:
Fig. 1 is the schematic block circuit diagram of low noise block downconverter of the present utility model；
Fig. 2 is the signal flow graph of low noise block downconverter of the present utility model, in figure: n represents
Including n satellite television programming Ch1～Chn in 10.7～12.75GHz satellite-signals altogether, Chx represents user
The designated television program received, the trapezoidal wire frame representation frequency band to induction signal is specified from n satellite television programming；
Fig. 3 is the schematic block circuit diagram of satellite receiving system of the present utility model.
Detailed description of the invention
As depicted in figs. 1 and 2, this utility model is applicable to the low noise down coversion that multiple-link satellite receiver uses
Device, is provided with vertical polarized antenna probe, horizontally-polarized antenna probe, low-noise amplifier LNA, can produce
The raw Ku wave band down coversion radio frequency chip IC1 of 10.40GHz local oscillation signal, double conversion control circuit IC2,
Band filter, signal amplification circuit, for storage microprocessor perform software program storage chip
Flash, for the coaxial cable interface that communicate with DVB and be used for as Ku wave band down coversion radio frequency core
The power circuit that sheet IC1 and double conversion control circuit IC2 are powered.Wherein, double conversion control circuit IC2
It is provided with automatic gain amplifier, analog-digital converter ADC, digital channel stacked switch, frequency mixer Mix, number
Weighted-voltage D/A converter DAC, can produce controlled local oscillation signal doubler PLL and have satellite television receiver lead to
The microprocessor of letter protocol encoding and decoding function；Ku wave band down coversion radio frequency chip IC1 is bipolarity Ku wave band
Down coversion radio frequency chip, this bipolarity Ku wave band down coversion radio frequency chip has vertical polarization input, level
Polarization input, vertical polarization outfan and horizontal polarization outfan, digital channel stacked switch has vertical pole
Change input and horizontal polarization input.
Above-mentioned vertical polarized antenna probe is connected under bipolarity Ku wave band by two-stage low-noise amplifier LNA
The vertical polarization input IN1 of conversion radio frequency chip, horizontally-polarized antenna probe passes through two-stage low-noise amplifier
LNA connects the horizontal polarization input IN2 of bipolarity Ku wave band down coversion radio frequency chip, bipolarity Ku ripple
The vertical polarization outfan OUT1 of section down coversion radio frequency chip passes sequentially through an automatic gain amplifier and
Individual analog-digital converter ADC connects the vertical polarization input of digital channel stacked switch, horizontal polarization outfan
OUT2 passes sequentially through an automatic gain amplifier and an analog-digital converter ADC connects digital channel stacking
The horizontal polarization input of switch；Bipolarity Ku wave band down coversion radio frequency chip is by the 10.7～12.75GHz of input
Vertical polarization satellite-signal and 10.40GHz local oscillation signal are in the way of satellite frequency deducts 10.40GHz
Export after being mixed into 300～2350MHz intermediate-freuqncy signals of vertical polarization, by 10.7～12.75GHz water of input
Mean pole satellite-signal and 10.40GHz local oscillation signal are mixed in the way of satellite frequency deducts 10.40GHz
Export after 300～2350MHz intermediate-freuqncy signals of frequency one-tenth horizontal polarization.
One input of above-mentioned frequency mixer Mix connects the outfan of digital channel stacked switch, another is defeated
Enter the end connection outfan of doubler PLL, outfan passes sequentially through digital to analog converter DAC and band filter
Connecting coaxial cable interface, the read port connecting coaxial cable interface of microprocessor, TV programme select outfan
Connect digital channel stacked switch controls end, the control end of FREQUENCY CONTROL outfan connection doubler PLL.
Above-mentioned microprocessor can read, by read port, the double conversion control command that coaxial cable interface receives,
Wherein, double conversion control command comprises frequency and the designated television programme information of described controlled local oscillation signal；Micro-
Processor can control described digital channel stacked switch by double conversion control command from receiving
300～2350MHz intermediate-freuqncy signals are selected the designated television program intermediate frequency corresponding to designated television programme information believe
Number output, and microprocessor can control described doubler PLL and press double conversion control command generation correspondence frequently
The controlled local oscillation signal of rate so that frequency mixer Mix is by designated television program intermediate-freuqncy signal and controlled local oscillation signal
It is mixed into double conversion signal, and this double conversion signal is passed sequentially through digital to analog converter DAC and the logical filter of band
Through being exported by coaxial cable interface after ripple device.Wherein, above-mentioned satellite television receiver communication protocol is DiSEqC
Any one in 1.x agreement, DiSEqC 2.x agreement, EN50494 agreement and EN50607 agreement.Coaxially
Cable interface is preferably F head interface.
As it is shown on figure 3, satellite receiving system of the present utility model, including an above-mentioned low noise block downconverter,
One power divider and at least one DVB, wherein, power divider have a main road port and
At least equal with DVB quantity tributary port.Low noise block downconverter is arranged on outdoor, and power distributes
Device and Ge Tai DVB are installed in indoor, and the coaxial cable interface of low noise block downconverter is by under one
Row cable connects the main road port of power divider, and each DVB is all connected by a house cable
The tributary port of power divider.
Receive as a example by designated television program Chx by DVB 1, illustrate that this utility model application is above-mentioned low
The workflow of the satellite receiving system of noise block down-converter:
DVB 1 receives user when instructing the program request of designated television program Chx, through " satellite
Receiver 1 house cable 1 power divider descending cable coaxial cable interface read port " road
Footpath first sends free subscriber frequency band querying command to the microprocessor of low noise block downconverter；Microprocessor is according to defending
This free subscriber frequency band querying command is decoded by star radiotelevisor communication protocol, and inquiry is obtained work as
After front free subscriber frequency band Query Result is encoded into acknowledgement command according to satellite television receiver communication protocol, pass through
" write port signal amplification circuit coaxial cable interface descending cable power divider house cable
1 DVB 1 " path be sent to DVB 1, DVB 1 is according to the response received
Order, selects one of them free subscriber frequency band as appointment in the current idle user's frequency band from Query Result
User's frequency band, and using this appointment user's frequency band and the designated television programme information that obtains in being instructed by program request as two
Secondary VFC order is sent to low noise block downconverter, and this secondary is become by the microprocessor of low noise block downconverter
Frequently control command decoding after, microprocessor control digital channel stacked switch from receive with designated television program
In the 300～2350MHz intermediate-freuqncy signals in Chx equipolarization direction, core out frequency is
IF=FREQ-10.04GHz, with a width of BW2 designated television program intermediate-freuqncy signal output, and, micro-
Processor calculates frequency LO=CFk+ IF, and control doubler PLL produce frequency be LO=CFk+ IF's
Controlled local oscillation signal so that designated television program intermediate-freuqncy signal is mixed by frequency mixer Mix with controlled local oscillation signal
Become frequency at LO-(IF-0.5 × BW2) to LO-(IF+0.5 × BW2Double conversion signal between), by
Within this double conversion signal belongs to the frequency range of kth user's frequency band, therefore which occupies kth and use
Family frequency band, and this double conversion signal is passed sequentially through after digital to analog converter DAC and band filter through by with
Shaft cable interface exports to DVB 1；The secondary that DVB 1 is exported by low noise block downconverter becomes
Signal is selected signal with the program request corresponding frequency range of instruction frequently be decoded, to play designated television program
Chx。
This utility model is not limited to above-mentioned detailed description of the invention, according to foregoing, and common according to this area
Technological know-how and customary means, without departing under this utility model above-mentioned basic fundamental thought premise, this practicality is new
Type can also be made the equivalent modifications of other various ways, replace or change, and all falls within protection of the present utility model
Among scope.Such as: Ku wave band down coversion radio frequency chip IC1 of the present utility model also can be selected for unipolar
Ku wave band down coversion radio frequency chip, only arranges a polarity corresponding with Ku wave band down coversion radio frequency chip
Antenna probe, it is corresponding with Ku wave band down coversion radio frequency chip that digital channel stacked switch is provided only with a polarity
Input, antenna probe by two-stage low-noise amplifier LNA connect Ku wave band down coversion radio frequency chip
The input of IC1, Ku wave band down coversion radio frequency chip IC1 is by 10.7～12.75GHz satellite-signals of input
I.e. Ku wave band Whole frequency band satellite-signal and 10.40GHz local oscillation signal deduct 10.40GHz with satellite frequency
Mode be mixed into after 300～2350MHz intermediate-freuqncy signals and export, Ku wave band down coversion radio frequency chip IC1's is defeated
Go out end and pass sequentially through an automatic gain amplifier and analog-digital converter ADC connects digital channel stacking and opens
The input closed.
Claims (5)
1. be suitable to the low noise block downconverter that multiple-link satellite receiver uses, be provided with antenna probe, low noise
Amplifier (LNA), Ku wave band down coversion radio frequency chip (IC1) of 10.40GHz local oscillation signal can be produced
With the coaxial cable interface for communicating with DVB, described antenna probe is put by low noise described in two-stage
Big device (LNA) connects the input of Ku wave band down coversion radio frequency chip (IC1)；Become under described Ku wave band
Frequently radio frequency chip (IC1) is by the 10.7～12.75GHz satellite-signals inputted and described 10.40GHz local oscillation signal
Export after being mixed into 300～2350MHz intermediate-freuqncy signals, it is characterised in that: described low noise block downconverter is also
It is provided with double conversion control circuit (IC2), band filter, signal amplification circuit and is used for as described Ku
The power circuit that wave band down coversion radio frequency chip (IC1) and double conversion control circuit (IC2) are powered；Described
Double conversion control circuit (IC2) is provided with automatic gain amplifier, analog-digital converter (ADC), numeral letter
Road stacked switch, frequency mixer (Mix), digital to analog converter (DAC), can produce controlled local oscillation signal times
Frequently device (PLL) and there is the microprocessor of satellite television receiver communication protocol codec functions, described Ku
The outfan of wave band down coversion radio frequency chip (IC1) passes sequentially through a described automatic gain amplifier and one
Described analog-digital converter (ADC) connects the input of described digital channel stacked switch, described frequency mixer (Mix)
Input connect the outfan of described digital channel stacked switch, another input connects described frequency multiplication
The outfan of device (PLL), outfan pass sequentially through described digital to analog converter (DAC) and band filter connects
Connecing described coaxial cable interface, the read port of described microprocessor connects described coaxial cable interface, TV programme
Select outfan to connect the control end of described digital channel stacked switch, FREQUENCY CONTROL outfan connects described frequency multiplication
The control end of device (PLL)；Described microprocessor can read described coaxial cable interface by read port and receive
Double conversion control command, wherein, described double conversion control command comprises the frequency of described controlled local oscillation signal
Rate and designated television programme information；Described microprocessor can control described digital channel stacked switch by described secondary
VFC order is selected from 300 received～2350MHz intermediate-freuqncy signal and is saved corresponding to described designated television
The designated television program intermediate-freuqncy signal of mesh information exports, and described microprocessor can control described doubler
(PLL) the controlled local oscillation signal of respective frequencies is produced by described double conversion control command so that described mixing
Described designated television program intermediate-freuqncy signal is mixed into double conversion signal with controlled local oscillation signal by device (Mix),
And this double conversion signal is passed sequentially through after described digital to analog converter (DAC) and band filter through by institute
State coaxial cable interface output.
Low noise block downconverter the most according to claim 1, it is characterised in that: described antenna probe bag
Include vertical polarized antenna probe and horizontally-polarized antenna probe, described Ku wave band down coversion radio frequency chip (IC1)
For bipolarity Ku wave band down coversion radio frequency chip, the input of this bipolarity Ku wave band down coversion radio frequency chip
Vertical polarization outfan and horizontal polarization is included including vertical polarization input and horizontal polarization input, outfan
Outfan, the input of described digital channel stacked switch includes vertical polarization input and horizontal polarization input
End；Described vertical polarized antenna probe connects described bipolarity by low-noise amplifier (LNA) described in two-stage
The vertical polarization input (IN1) of Ku wave band down coversion radio frequency chip, described horizontally-polarized antenna probe passes through
Low-noise amplifier described in two-stage (LNA) connects the level of described bipolarity Ku wave band down coversion radio frequency chip
Polarization input (IN2), the vertical polarization outfan of described bipolarity Ku wave band down coversion radio frequency chip
(OUT1) pass sequentially through a described automatic gain amplifier and a described analog-digital converter (ADC) connects
Connect the vertical polarization input of described digital channel stacked switch, horizontal polarization outfan (OUT2) leads to successively
Cross a described automatic gain amplifier and a described analog-digital converter (ADC) connects described digital channel
The horizontal polarization input of stacked switch；Described bipolarity Ku wave band down coversion radio frequency chip is by input
10.7～12.75GHz vertical polarization satellite-signals are mixed into vertical polarization with described 10.40GHz local oscillation signal
After 300～2350MHz intermediate-freuqncy signals export, by input 10.7～12.75GHz horizontal polarization satellite-signals with
Described 10.40GHz local oscillation signal exports after being mixed into 300～2350MHz intermediate-freuqncy signals of horizontal polarization.
Low noise block downconverter the most according to claim 1 and 2, it is characterised in that: described satellite television
Receiver communication protocol is DiSEqC 1.x agreement, DiSEqC 2.x agreement, EN50494 agreement and EN50607
Any one in agreement.
Low noise block downconverter the most according to claim 1 and 2, it is characterised in that: described coaxial electrical
Cable interface is F head interface.
5. a satellite receiving system, it is characterised in that: described satellite receiving system includes a claim
Low noise block downconverter described in 1 to 4 any one, a power divider and at least one DVB,
Wherein, described power divider has a main road port and at least equal with described DVB quantity propping up
Road port；It is equal that described low noise block downconverter is arranged on outdoor, described power divider and Ge Tai DVB
Being arranged on indoor, the coaxial cable interface of described low noise block downconverter connects described merit by a descending cable
The main road port of rate allotter, each described DVB all connects described power by a house cable
The tributary port of allotter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620176425.2U CN205490510U (en) | 2016-03-08 | 2016-03-08 | Be suitable for low noise down converter and satellite receiving system of use of multichannel satellite receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620176425.2U CN205490510U (en) | 2016-03-08 | 2016-03-08 | Be suitable for low noise down converter and satellite receiving system of use of multichannel satellite receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490510U true CN205490510U (en) | 2016-08-17 |
Family
ID=56655739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620176425.2U Active CN205490510U (en) | 2016-03-08 | 2016-03-08 | Be suitable for low noise down converter and satellite receiving system of use of multichannel satellite receiver |
Country Status (1)
| Country | Link |
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| CN (1) | CN205490510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068076A (en) * | 2018-10-11 | 2018-12-21 | 珠海佳讯创新科技股份有限公司 | The high-frequency tuner of Ku band satellite signal is transmitted and distributed by coaxial cable |
-
2016
- 2016-03-08 CN CN201620176425.2U patent/CN205490510U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109068076A (en) * | 2018-10-11 | 2018-12-21 | 珠海佳讯创新科技股份有限公司 | The high-frequency tuner of Ku band satellite signal is transmitted and distributed by coaxial cable |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 511455 Guangdong city of Guangzhou province Nansha District Huangge Town Ji Sheng Lu No. 2 (plant A) Patentee after: Guangzhou Yi Da Polytron Technologies Inc Address before: 511442 Guangdong Province, Guangzhou City Southern towns Panyu District Dengyun Road No. 8 East Tong Po Industrial Park Haosheng east 2 building five floor Patentee before: Guangzhou Earda Electronic Co., Ltd. |