Gnéithe:
- Banna Leathan
- Teocht Íseal Torainn
- VSWR Ionchur Íseal
I gcórais chumarsáide, d'fhonn tarchur comhartha a éascú agus athúsáid cainéal a bhaint amach, tá minicíocht na gcomharthaí tarchurtha an-ard, agus mar sin tá comhshó minicíochta comharthaí ina ghné thábhachtach de thaighde an chórais chumarsáide. De réir an staid roimh agus tar éis comhshó minicíochta, is féidir é a roinnt ina chomhshó síos (laghdú minicíochta) agus comhshó suas (méadú minicíochta).
Sa ghlacadóir, má tá an comhartha minicíochta idirmheánach a fhaightear tar éis a mheascadh níos ísle ná an comhartha bunaidh, ansin tugtar bloc downconverters (LNBanna) ar an modh meascáin seo.
Is é an modh a bhaineann le blocthiontairí ná an comhartha faighte a iolrú leis an comhartha oscillator áitiúil a ghineann an t-oscillator áitiúil, agus ansin an comhartha comhshóite a fháil trí scagaire pas íseal. Is féidir dhá chomhartha iolraithe a roinnt ina mheascadh fíor agus meascán casta trí léiriú fíor nó casta.
Is é cuspóir na n-íos-tiontaithe bloc ná minicíocht iompróra an chomhartha a laghdú nó an minicíocht iompróra a bhaint go díreach chun an comhartha baseband a fháil. Mar gheall ar a chiorcad simplí agus ar chostas íseal, úsáidtear an modh comhshó síos go forleathan i dtrealamh sibhialta agus trealamh míleata le riachtanais ísealfheidhmíochta.
1. Teilifís Satailíte: Is comhpháirteanna lárnacha iad LNBanna i gcórais glactha teilifíse satailíte. Tá siad suiteáilte ag pointe fócasach antenna satailíte (paraboloid nó mias), faigheann siad an comhartha teilifíse a tharchuireann an satailíte, agus déantar iad a thiontú ina chomhartha minicíochta idirmheánach is féidir leis an nglacadóir a phróiseáil.
2. Idirlíon Satailíte: I gcórais Idirlín satailíte, úsáidtear LNBanna chun sonraí Idirlín a tharchuirtear ó shatailítí a fháil. Faigheann an trealamh úsáideora na sonraí tríd an LNB agus díchódaíonn agus próiseálann é tríd an modem.
3. Cumarsáid Satailíte: Úsáidtear LNBanna go forleathan i gcórais chumarsáide satailíte éagsúla, lena n-áirítear fóin satailíte, craoltaí satailíte, tarchur sonraí satailíte, etc. Cuidíonn siad le cineálacha éagsúla comharthaí cumarsáide a tharchuirtear ó shatailítí a fháil agus a phróiseáil.
4. Breathnú na Cruinne agus Cianbhraiteacht: I roinnt feidhmchlár breathnadóireachta na Cruinne agus cianbhraite, úsáidtear LNBanna chun sonraí cianbhraiteacha a tharchuirtear ó shatailítí a fháil. Is féidir na sonraí seo a úsáid i monatóireacht meitéareolaíochta, monatóireacht comhshaoil, rabhadh tubaiste agus réimsí eile.
Go hachomair, tá ról ríthábhachtach ag LNBanna i gcórais chumarsáide satailíte nua-aimseartha agus úsáidtear iad go forleathan i gcraolachán teilifíse, rochtain Idirlín, cumarsáid sonraí agus réimsí gairmiúla éagsúla.
Qualtonesoláthraíonn sé cineálacha éagsúla Block Downconverters (LNBanna) sa S~Ka-Band, le teocht torainn 45 ~ 240K. Na foircinn le cineál éagsúla chun freastal ar riachtanais na gcustaiméirí.
LNBanna | |||||||||
---|---|---|---|---|---|---|---|---|---|
Uimhir Pháirt | Banna | Minicíocht RF ionchuir (GHz) | Minicíocht LO (GHz) | Aschur IF Minicíocht (MHz) | Gnóthachan (dB) | NT(K) | Ceanglóir IF | VSWR (Uas.) | Am Luaidhe (Seachtainí) |
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 nó 5.75 | 950~1750 nó 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 nó 10.6 | 950~1950 nó 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 nó 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 nó 10.25 nó 10.75 nó 11.30 | 940~1500 nó 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 nó 10.75 nó 11.30 | 950~1950 nó 940~1500 nó 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 agus 13.7 | 950~1950 agus 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 nó 10.75 | 950~1700 nó 950~2000 | 60 | 65 | N, SMA, F | 2.5/2.0 | 2~8 |
QLB-10950-12750-60-80 | Ku | 10.95~12.75 | 10 nó 10.5 nó 10.75 nó 11.25 | 940~1500 nó 950~1450 nó 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 nó 10.75 nó 11.30 | 950~1700 nó 940~1500 nó 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 agus 13.7 | 950~1700 agus 950~2000 | 60 | 90 | N, SMA, F | 1.35/1.5 | 2~8 |
QLB-11450-12750-60-70 | Ku | 11.45~11.7 agus 12.25~12.75 | 9 | 2450~2700 agus 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 agus 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 nó 17.25 nó 18.25 nó 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 agus 17.25 agus 21.15 agus 22.15 | 950–1950 agus 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 nó 17.25 nó 18.25 nó 19.25 nó 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 nó 17.35 nó 18.35 | 950~1950 nó 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 nó 17.35 nó 18.35 | 950~1950 nó 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 nó 17.60 nó 18.85 nó 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 nó 17.6/22 nó 16.35/23.25 nó 17.6/23.25 | 950~2200 agus 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 nó 17.25 nó 18.25 nó 19.25 | 950~1450 nó 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 nó 17.75/21.15 nó 16.75/22.15 nó 17.75/22.15 | 950–1950 agus 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 nó 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 agus 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 nó 18.25 nó 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 nó 18.25 nó 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 nó 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 agus 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 nó 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 agus 23.15 | 950–1950 | 60 | 150 | N, SMA, F | 2.5/2.0 | 2~8 |
LNBanna Cur isteach Frith 5G | |||||||||
Uimhir Pháirt | Banna | Minicíocht RF ionchuir (GHz) | Minicíocht LO (GHz) | Aschur IF Minicíocht (MHz) | Gnóthachan (dB) | NT(K) | Ceanglóir IF | VSWR (Uas.) | Am Luaidhe (Seachtainí) |
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 |