Vipengele:
- Bendi pana
- Joto la Chini la Kelele
- VSWR ya Kuingiza Kiasi Kidogo
+86-28-6115-4929
sales@qualwave.com
Katika mifumo ya mawasiliano, ili kurahisisha upitishaji wa mawimbi na kufikia utumiaji tena wa njia, masafa ya mawimbi yanayosambazwa ni ya juu sana, kwa hivyo ubadilishaji wa masafa ya mawimbi ni kipengele muhimu cha utafiti wa mfumo wa mawasiliano. Kulingana na hali kabla na baada ya ubadilishaji wa masafa, inaweza kugawanywa katika ubadilishaji wa chini (kupunguza masafa) na ubadilishaji wa juu (kuongezeka kwa masafa).
Katika kipokezi, ikiwa ishara ya masafa ya kati inayopatikana baada ya kuchanganya ni ya chini kuliko ishara ya asili, basi njia hii ya kuchanganya inaitwa vibadilishaji vya kuzuia (LNBs).
Mbinu ya vibadilishaji vya kuzuia ni kuzidisha ishara iliyopokelewa na ishara ya kioscillator cha ndani inayozalishwa na kioscillator cha ndani, na kisha kupata ishara iliyobadilishwa kupitia kichujio cha kupitisha chini. Ishara mbili zilizozidishwa zinaweza kugawanywa katika uchanganyaji halisi na uchanganyaji tata kupitia uwakilishi halisi au tata.
Madhumuni ya vibadilishaji vya kuzuia ni kupunguza masafa ya kibebaji cha ishara au kuondoa moja kwa moja masafa ya kibebaji ili kupata ishara ya besi. Kwa sababu ya saketi yake rahisi na gharama ya chini, njia ya ubadilishaji wa chini hutumiwa sana katika vifaa vya kiraia na vifaa vya kijeshi vyenye mahitaji ya utendaji mdogo.
1. Televisheni ya Setilaiti: LNB ni vipengele muhimu katika mifumo ya mapokezi ya TV ya setilaiti. Zimewekwa kwenye sehemu ya msingi ya antena ya setilaiti (paraboloidi au dishi), hupokea mawimbi ya TV yanayosambazwa na setilaiti, na kuyabadilisha kuwa mawimbi ya masafa ya kati ambayo yanaweza kusindika na kipokezi.
2. Intaneti ya Setilaiti: Katika mifumo ya Intaneti ya setilaiti, vipaza sauti hutumika kupokea data ya Intaneti inayosambazwa kutoka kwa setilaiti. Kifaa cha mtumiaji hupokea data kupitia LNB na kuisimbua na kuichakata kupitia modemu.
3. Mawasiliano ya Setilaiti: Vipaza sauti vya RF hutumika sana katika mifumo mbalimbali ya mawasiliano ya setilaiti, ikiwa ni pamoja na simu za setilaiti, matangazo ya setilaiti, uwasilishaji wa data ya setilaiti, n.k. Husaidia kupokea na kusindika aina mbalimbali za mawimbi ya mawasiliano yanayosambazwa kutoka kwa setilaiti.
4. Uchunguzi wa Dunia na Utambuzi wa Mbali: Katika baadhi ya matumizi ya uchunguzi wa Dunia na utambuzi wa mbali, vikuza sauti vya maikrowevu hutumika kupokea data ya utambuzi wa mbali inayosambazwa kutoka kwa setilaiti. Data hizi zinaweza kutumika katika ufuatiliaji wa hali ya hewa, ufuatiliaji wa mazingira, onyo la maafa na nyanja zingine.
Kwa muhtasari, LNB zina jukumu muhimu katika mifumo ya kisasa ya mawasiliano ya setilaiti na hutumika sana katika utangazaji wa televisheni, ufikiaji wa intaneti, mawasiliano ya data na nyanja mbalimbali za kitaaluma.
Qualwavehutoa aina mbalimbali za Vibadilishaji vya Block Down (LNBs) katika S~Ka-Band, zenye halijoto ya kelele ya 45~240K. Miisho yenye aina tofauti ili kukidhi mahitaji ya wateja.

| LNB | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nambari ya Sehemu | Bendi | Masafa ya RF ya Ingizo (GHz) | Masafa ya LO (GHz) | Masafa ya IF ya Matokeo (MHz) | Faida (dB) | NT(K) | Kiunganishi cha IF | VSWR (Kiwango cha juu) | Muda 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 |
| LNB za Kupinga Uingiliaji wa 5G | |||||||||
| Nambari ya Sehemu | Bendi | Masafa ya RF ya Ingizo (GHz) | Masafa ya LO (GHz) | Masafa ya IF ya Matokeo (MHz) | Faida (dB) | NT(K) | Kiunganishi cha IF | VSWR (Kiwango cha juu) | Muda 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 |