Kenmerke:
- Breë Band
- Lae geraas temperatuur
- Lae inset VSWR
In kommunikasiestelsels, om seinoordrag te vergemaklik en kanaalhergebruik te bewerkstellig, is die frekwensie van gestuurde seine baie hoog, dus is frekwensie-omskakeling van seine 'n belangrike aspek van kommunikasiestelselnavorsing. Volgens die situasie voor en na frekwensie-omskakeling, kan dit verdeel word in af-omskakeling (frekwensievermindering) en op-omskakeling (frekwensieverhoging).
In die ontvanger, as die intermediêre frekwensie-sein wat na vermenging verkry word, laer is as die oorspronklike sein, word hierdie mengmetode blok-afomskakelaars (LNB's) genoem.
Die metode van blok-afomskakelaars is om die ontvangde sein te vermenigvuldig met die plaaslike ossillatorsein wat deur die plaaslike ossillator gegenereer word, en dan die omgeskakelde sein deur 'n laagdeurlaatfilter te verkry. Twee vermenigvuldigde seine kan verdeel word in werklike vermenging en komplekse vermenging deur werklike of komplekse voorstelling.
Die doel van blok-afomskakelaars is om die drafrekwensie van die sein te verminder of die drafrekwensie direk te verwyder om die basisbandsein te verkry. As gevolg van sy eenvoudige stroombaan en lae koste, word die af-omskakelingsmetode wyd gebruik in burgerlike toerusting en militêre toerusting met lae werkverrigtingvereistes.
1. Satelliet-TV: LNB's is sleutelkomponente in satelliet-TV-ontvangstelsels. Hulle word by die fokuspunt van 'n satellietantenna (paraboloïed of skottel) geïnstalleer, ontvang die TV-sein wat deur die satelliet uitgesaai word, en skakel dit om in 'n tussenfrekwensiesein wat deur die ontvanger verwerk kan word.
2. Satelliet-internet: In satelliet-internetstelsels word LNB's gebruik om internetdata wat vanaf satelliete versend word, te ontvang. Die gebruikertoerusting ontvang die data deur die LNB en dekodeer en verwerk dit deur die modem.
3. Satellietkommunikasie: LNB's word wyd gebruik in verskeie satellietkommunikasiestelsels, insluitend satellietfone, satelliet-uitsendings, satellietdata-oordrag, ens. Hulle help om verskeie tipes kommunikasieseine wat vanaf satelliete versend word, te ontvang en te verwerk.
4. Aardwaarneming en Afstandwaarneming: In sommige Aardwaarnemings- en afstandwaarnemingstoepassings word LNB's gebruik om afstandswaarnemingsdata wat vanaf satelliete versend word, te ontvang. Hierdie data kan gebruik word in meteorologiese monitering, omgewingsmonitering, rampwaarskuwing en ander velde.
Samevattend speel LNB's 'n belangrike rol in moderne satellietkommunikasiestelsels en word wyd gebruik in televisie-uitsaaiwese, internettoegang, datakommunikasie en verskeie professionele velde.
Kwalgolfverskaf verskeie tipes Block Downconverters (LNBs) in die S~Ka-Band, met 'n geraastemperatuur van 45~240K. Die beëindigings met verskillende tipes om aan die behoeftes van kliënte te voldoen.
LNB'e | |||||||||
---|---|---|---|---|---|---|---|---|---|
Deelnommer | Band | Invoer RF-frekwensie (GHz) | LO-frekwensie (GHz) | Uitset IF frekwensie (MHz) | Wins (dB) | NT(K) | IF Connector | VSWR (Maks.) | Leertyd (Weke) |
QLB-2200-2700-60-50 | S | 2.2~2.7 | 3,65 | 950~1450 | 60 | 50 | N, SMA, F | 2.0/1.5 | 2~8 |
QLB-3400-4200-60-40 | C | 3.4~4.2 | 5.15 | 950~1750 | 60 | 40 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-3400-4200-60-45 | C | 3.4~4.2 | 5.15 | 950~1750 | 60 | 45 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-3400-4800-60-75 | C | 3,4~4,8 | 5.15 of 5.75 | 950~1750 of 950~1550 | 60 | 75 | N, SMA, F | 1,5/1,5 | 2~8 |
QLB-3625-4200-60-45 | C | 3,625~4,2 | 5.15 | 950~1520 | 60 | 45 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-3700-4200-60-40 | C | 3.7~4.2 | 5.15 | 950~1450 | 60 | 40 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-3700-4200-60-45 | C | 3.7~4.2 | 5.15 | 950~1450 | 60 | 45 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-4500-4800-60-45 | C | 4,5~4,8 | 5,76 | 960~1260 | 60 | 45 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-7250-7750-60-75 | X | 7,25~7,75 | 6.3 | 950~1450 | 60 | 75 | N, SMA, F | 1,5/2,0 | 2~8 |
QLB-7750-8500-60-75-2 | X | 7,75~8,5 | 6,95 | 800~1550 | 60 | 75 | N, SMA, F | 1,5/2,0 | 2~8 |
QLB-7750-8500-60-75 | X | 7,75~8,5 | 6.8 | 950~1700 | 60 | 75 | N, SMA, F | 1,5/2,0 | 2~8 |
QLB-10700-11700-60-65 | Ku | 10.7~11.7 | 9,75 | 950~1950 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10700-11700-60-65-2 | Ku | 10.7~11.7 | 9,75 | 950~1950 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10700-12750-60-65 | Ku | 10,7~12,75 | 9.75 of 10.6 | 950~1950 of 1100~2150 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10700-12750-60-65-2 | Ku | 10,7~12,75 | 9.75 of 10.75 | 950~2000 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10700-12750-60-80 | Ku | 10,7~12,75 | 9.75 of 10.25 of 10.75 of 11.30 | 940~1500 of 950~1450 | 60 | 80 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10700-12750-60-80-2 | Ku | 10,7~12,75 | 9.75 of 10.75 of 11.30 | 950~1950 of 940~1500 of 950~1450 | 60 | 80 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10700-12750-60-90 | Ku | 10,7~12,75 | 9,75 | 950~3000 | 60 | 90 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-10700-12750-60-90-1 | Ku | 10,7~12,75 | 9.75 en 13.7 | 950~1950 en 950~2000 | 60 | 90 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-10950-11700-60-65 | Ku | 10,95~11,7 | 10 | 950~1700 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10950-12750-60-65 | Ku | 10,95~12,75 | 10 of 10,75 | 950~1700 of 950~2000 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10950-12750-60-80 | Ku | 10,95~12,75 | 10 of 10,5 of 10,75 of 11,25 | 940~1500 of 950~1450 of 950~1500 | 60 | 80 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10950-12750-60-80-2 | Ku | 10,95~12,75 | 10 of 10.75 of 11.30 | 950~1700 of 940~1500 of 950~1450 | 60 | 80 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-10950-12750-60-90 | Ku | 10,95~12,75 | 10 | 950~2750 | 60 | 90 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-10950-12750-60-90-1 | Ku | 10,95~12,75 | 10 en 13.7 | 950~1700 en 950~2000 | 60 | 90 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-11450-12750-60-70 | Ku | 11.45~11.7 en 12.25~12.75 | 9 | 2450~2700 en 3250~3750 | 60 | 70 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-11700-12200-60-65 | Ku | 11.7~12.2 | 10.75 | 950~1450 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-11700-12200-60-65-2 | Ku | 11.7~12.2 | 10.75 | 950~1450 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-11700-12750-60-65 | Ku | 11,7~12,75 | 10.75 | 950~2000 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-11700-12750-60-80 | Ku | 11,7~12,75 | 10.75 | 950~2000 | 60 | 80 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-12250-12750-60-65 | Ku | 12,25~12,75 | 11.3 | 950~1450 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-12250-12750-60-65-2 | Ku | 12,25~12,75 | 11.3 | 950~1450 | 60 | 65 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-17200-19200-60-150-1 | Ka | 17.2~19.2 | 16.25 en 20.15 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-17200-21200-60-170 | Ka | 17.2~21.2 | 16.25 of 17.25 of 18.25 of 19.25 | 950~1950 | 60 | 170 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-17200-21200-60-170-1 | Ka | 17.2~21.2 | 16.25 en 17.25 en 21.15 en 22.15 | 950~1950 en 950~1950 | 60 | 170 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-17200-22200-60-240 | Ka | 17.2~22.2 | 16.25 of 17.25 of 18.25 of 19.25 of 20.25 | 950~1950 | 60 | 240 | N, SMA, F | 1,5/2,0 | 2~8 |
QLB-17300-20200-60-150 | Ka | 17.3~20.2 | 16.35 of 17.35 of 18.35 | 950~1950 of 950~1850 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-17300-20200-60-150-2 | Ka | 17.3~20.2 | 16.35 of 17.35 of 18.35 | 950~1950 of 950~1850 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-17300-22300-60-170 | Ka | 17.3~22.3 | 16.35 of 17.60 of 18.85 of 20.10 | 950~2200 | 60 | 170 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-17300-22300-60-170-1 | Ka | 17.3~22.3 | 16.35/22 of 17.6/22 of 16.35/23.25 of 17.6/23.25 | 950~2200 en 950~2200 | 60 | 170 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-17700-21200-60-170 | Ka | 17.7~21.2 | 16.75 of 17.25 of 18.25 of 19.25 | 950~1450 of 950~1950 | 60 | 170 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-17700-21200-60-170-1 | Ka | 17.7~21.2 | 16.75/21.15 of 17.75/21.15 of 16.75/22.15 of 17.75/22.15 | 950~1950 en 950~1950 | 60 | 170 | N, SMA, F | 1,35/1,5 | 2~8 |
QLB-18200-20200-60-150 | Ka | 18.2~20.2 | 17.25 of 18.25 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-18200-20200-60-150-1 | Ka | 18.2~20.2 | 17.25 en 18.25 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-18200-21200-60-150 | Ka | 18.2~21.2 | 17.25 of 18.25 of 19.25 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-18200-21200-60-150-2 | Ka | 18.2~21.2 | 17.25 of 18.25 of 19.25 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-19200-21200-60-150 | Ka | 19.2~21.2 | 18.25 of 19.25 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-19200-21200-60-150-1 | Ka | 19.2~21.2 | 21.15 en 22.15 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-19600-21200-60-150 | Ka | 19.6~21.2 | 17.4 | 2200~3800 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-20200-22200-60-150 | Ka | 20.2~22.2 | 19.25 of 20.25 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-20200-22200-60-150-1 | Ka | 20.2~22.2 | 19.25 en 23.15 | 950~1950 | 60 | 150 | N, SMA, F | 2,5/2,0 | 2~8 |
Anti 5G-interferensie LNB's | |||||||||
Deelnommer | Band | Invoer RF-frekwensie (GHz) | LO-frekwensie (GHz) | Uitset IF frekwensie (MHz) | Wins (dB) | NT(K) | IF Connector | VSWR (Maks.) | Leertyd (Weke) |
QLB-3625-4200-60-50 | C | 3,625~4,2 | - | 950~1525 | 60 | 50 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-3700-4200-60-50 | C | 3.7~4.2 | - | 950~1450 | 60 | 50 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-3700-4200-60-45-2 | C | 3.7~4.2 | - | 950~1450 | 60 | 45 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-3800-4200-60-50 | C | 3.8~4.2 | - | 950~1350 | 60 | 50 | N, SMA, F | 2,5/2,0 | 2~8 |
QLB-3800-4200-60-45 | C | 3.8~4.2 | - | 950~1350 | 60 | 45 | N, SMA, F | 2,5/2,0 | 2~8 |