Vipengee:
- Bendi pana
- Joto la chini la kelele
- VSWR ya pembejeo ya chini
Katika mifumo ya mawasiliano, ili kuwezesha maambukizi ya ishara na kufikia utumiaji wa kituo, mzunguko wa ishara zilizopitishwa ni kubwa sana, kwa hivyo ubadilishaji wa mara kwa mara wa ishara ni sehemu muhimu ya utafiti wa mfumo wa mawasiliano. Kulingana na hali kabla na baada ya ubadilishaji wa frequency, inaweza kugawanywa katika ubadilishaji wa chini (kupunguzwa kwa frequency) na ubadilishaji wa juu (kuongezeka kwa frequency).
Katika mpokeaji, ikiwa ishara ya masafa ya kati iliyopatikana baada ya kuchanganywa ni chini kuliko ishara ya asili, basi njia hii ya kuchanganya inaitwa block Downconverters (LNBs).
Njia ya kizuizi cha kuzuia ni kuzidisha ishara iliyopokelewa na ishara ya ndani ya oscillator inayotokana na oscillator ya ndani, na kisha kupata ishara iliyobadilishwa kupitia kichujio cha chini. Ishara mbili zilizoongezeka zinaweza kugawanywa katika mchanganyiko halisi na mchanganyiko tata kupitia uwakilishi halisi au ngumu.
Madhumuni ya block chini ya kuzuia ni kupunguza frequency ya kubeba ya ishara au kuondoa moja kwa moja frequency ya carrier kupata ishara ya baseband. Kwa sababu ya mzunguko wake rahisi na gharama ya chini, njia ya ubadilishaji chini hutumiwa sana katika vifaa vya raia na vifaa vya jeshi na mahitaji ya chini ya utendaji.
1. TV ya Satellite: LNB ni sehemu muhimu katika mifumo ya mapokezi ya TV. Zimewekwa katika sehemu ya msingi ya antenna ya satelaiti (paraboloid au sahani), kupokea ishara ya TV iliyopitishwa na satelaiti, na kuibadilisha kuwa ishara ya masafa ya kati ambayo inaweza kusindika na mpokeaji.
2. Mtandao wa Satellite: Katika mifumo ya mtandao ya satelaiti, amplifiers hutumiwa kupokea data ya mtandao iliyopitishwa kutoka kwa satelaiti. Vifaa vya mtumiaji hupokea data kupitia LNB na huamua na kuishughulikia kupitia modem.
3. Mawasiliano ya satelaiti: Vipimo vya RF vinatumika sana katika mifumo mbali mbali ya mawasiliano ya satelaiti, pamoja na simu za satelaiti, matangazo ya satelaiti, usambazaji wa data ya satelaiti, nk Wanasaidia kupokea na kusindika aina anuwai za ishara za mawasiliano zilizopitishwa kutoka kwa satelaiti.
4. Uchunguzi wa Dunia na Kuhisi mbali: Katika uchunguzi fulani wa Dunia na matumizi ya mbali ya kuhisi, amplifiers za microwave hutumiwa kupokea data ya mbali ya kuhisi kutoka kwa satelaiti. Hizi data zinaweza kutumika katika ufuatiliaji wa hali ya hewa, ufuatiliaji wa mazingira, onyo la msiba na nyanja zingine.
Kwa muhtasari, LNB zina jukumu muhimu katika mifumo ya kisasa ya mawasiliano ya satelaiti na hutumiwa sana katika utangazaji wa runinga, ufikiaji wa mtandao, mawasiliano ya data na nyanja mbali mbali za kitaalam.
QualwaveInasambaza aina anuwai za block Downconverters (LNBs) katika S ~ ka-band, na joto la kelele la 45 ~ 240k. Kukomesha na aina tofauti kukidhi mahitaji ya wateja.
Lnbs | |||||||||
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Nambari ya sehemu | Bendi | Kuingiza frequency ya RF (GHz) | Frequency ya LO (GHz) | Pato Ikiwa Frequency (MHz) | Faida (db) | NT (K) | Ikiwa kiunganishi | VSWR (Max.) | Wakati wa Kuongoza (Wiki) |
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 au 5.75 | 950 ~ 1750 au 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 au 10.6 | 950 ~ 1950 au 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 au 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 au 10.25 au 10.75 au 11.30 | 940 ~ 1500 au 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 au 10.75 au 11.30 | 950 ~ 1950 au 940 ~ 1500 au 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 na 13.7 | 950 ~ 1950 na 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 au 10.75 | 950 ~ 1700 au 950 ~ 2000 | 60 | 65 | N, sma, f | 2.5/2.0 | 2 ~ 8 |
QLB-10950-12750-60-80 | Ku | 10.95 ~ 12.75 | 10 au 10.5 au 10.75 au 11.25 | 940 ~ 1500 au 950 ~ 1450 au 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 au 10.75 au 11.30 | 950 ~ 1700 au 940 ~ 1500 au 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 na 13.7 | 950 ~ 1700 na 950 ~ 2000 | 60 | 90 | N, sma, f | 1.35/1.5 | 2 ~ 8 |
QLB-11450-12750-60-70 | Ku | 11.45 ~ 11.7 na 12.25 ~ 12.75 | 9 | 2450 ~ 2700 na 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 na 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 au 17.25 au 18.25 au 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 na 17.25 na 21.15 na 22.15 | 950 ~ 1950 na 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 au 17.25 au 18.25 au 19.25 au 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 au 17.35 au 18.35 | 950 ~ 1950 au 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 au 17.35 au 18.35 | 950 ~ 1950 au 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 au 17.60 au 18.85 au 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 au 17.6/22 au 16.35/23.25 au 17.6/23.25 | 950 ~ 2200 na 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 au 17.25 au 18.25 au 19.25 | 950 ~ 1450 au 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 au 17.75/21.15 au 16.75/22.15 au 17.75/22.15 | 950 ~ 1950 na 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 au 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 na 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 au 18.25 au 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 au 18.25 au 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 au 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 na 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 au 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 na 23.15 | 950 ~ 1950 | 60 | 150 | N, sma, f | 2.5/2.0 | 2 ~ 8 |
Anti 5G kuingilia kati lnbs | |||||||||
Nambari ya sehemu | Bendi | Kuingiza frequency ya RF (GHz) | Frequency ya LO (GHz) | Pato Ikiwa Frequency (MHz) | Faida (db) | NT (K) | Ikiwa kiunganishi | VSWR (Max.) | Wakati wa Kuongoza (Wiki) |
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 |