Funksjes:
- Hege Stopband ôfwizing
- Lytse Grutte
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+86-28-6115-4929 -
sales@qualwave.com
RF High Stopband Rejection Small Size Telecom Low Pass Filters
In leechpassfilter is in sinjaalferwurkingsfilter dat sinjalen mei leechfrekwinsje behâldt troch hege frekwinsjesinjalen te ferwiderjen. It lit sinjalen mei frekwinsjes minder dan in bepaalde drompel passe, mar fersmyt sinjalen mei frekwinsjes grutter dan dy drompel.
Funksjes:
1. Allinnich sinjalen ûnder in spesifike frekwinsje meie trochjaan, wylst sinjalen boppe dy frekwinsje wurde filtere of ferswakke.
2. By it trochjaan fan lege-frekwinsje sinjalen, der is hast gjin feroaring yn faze.
3. Meastentiids wurde ien of mear kondensatoren en induktors brûkt om leechpassfilters te bouwen.
Oanfraach:
1.smooth sinjaal
low-pass filter wurdt benammen brûkt om glêd it sinjaal, it kin fuortsmite it lûd yn de hege-frekwinsje sinjaal, sadat it sinjaal wurdt stabiler. Yn gefallen dêr't in glêd sinjaal is nedich, de low-pass filter kin fuortsmite hege frekwinsje ynterferinsje lûd, sadat it systeem mear betrouber en stabyl.
2.noise reduksje
low-pass filter sil gjin ynfloed op de lege-frekwinsje sinjaal, wylst behâlden fan de lege-frekwinsje sinjaal, hege-frekwinsje lûd kin wurde filtere út. Yn audioferwurking as byldferwurking kinne leechpassfilters lûd filterje en it ferwurke sinjaal dúdliker meitsje.
3.reduce de flater
low-pass filter kin ferminderjen de flater, benammen geskikt foar precision ynstrumint mjitting. Yn guon easken mjittingen kin it leechpassfilter lûd, ynterferinsje en oare faktoaren ferwiderje, sadat de mjitresultaten krekter en betrouber binne.
4.wide oanbod fan tapassing
Low pass filter hat in heul breed oanbod fan applikaasjes, fan audio oant ôfbylding, fan kommunikaasje oant kontrôle, hast oeral. Bygelyks, yn basisbânsinjaalferwurking is in leechpassfilter nedich.
Yn kommunikaasje kin leechpassfilter heechfrekwinsje lûd, ynterferinsje, ensfh., Om kommunikaasjekwaliteit te garandearjen; Op it mêd fan kontrôle kin it leechpassfilter brûkt wurde foar sinjaal glêd en lûdfiltering.
Qualwaveleveret hege stopband ôfwizing low pass filters yn frekwinsje berik DC-50GHz. De leechpassfilters wurde breed brûkt yn in protte tapassingen.
Part Number | Passband(GHz, min.)  | Passband(GHz, Max.) | Insertion Loss(dB, Max.) | VSWR(Max.) | Stopband Attenuation(dB) | Connectors |
|---|---|---|---|---|---|---|
| QLF-1-40 | DC | 0.001 | 1.5 | 1.5 | 40@2-4MHz, 50@4-100MHz | SMA |
| QLF-2-15-40 | 0.002 | 0.015 | 2.5 | 1.5 | 40@17-200MHz | SMA |
| QLF-2.5-50 | DC | 0.0025 | 0.8 | 1.5 | 50@5-50MHz | SMA |
| QLF-5-50 | DC | 0.005 | 1 | 1.5 | 50@8-50MHz | SMA |
| QLF-10-50 | DC | 0.01 | 1 | 1.5 | 50@13-150MHz | SMA |
| QLF-30-40 | DC | 0.03 | 1 | 1.5 | 40@45MHz, 60@60MHz | SMA |
| QLF-32-40 | DC | 0.032 | 0.8 | 1.5 | 40@50-90MHz | N |
| QLF-45-20 | DC | 0.045 | 1 | 1.7 | 20@0.07-0.09GHz | SMA |
| QLF-55-35 | DC | 0.055 | 0.8 | 1.5 | 35@0.07-0.2GHz | SMA |
| QLF-200-2400-60 | 0.2 | 2.4 | 5 | 1.5 | 60@3.6GHz | SMA |
| QLF-300-40 | DC | 0.3 | 1 | 1.5 | 40@450MHz, 60@600MHz | SMA |
| QLF-300-60 | DC | 0.3 | 0.5 | 1.5 | 60@0.643-3GHz | SMA |
| QLF-330-60 | DC | 0.33 | 0.5 | 1.3 | 60@0.643-3GHz | SMA |
| QLF-480-30 | DC | 0.48 | 3 | 1.5 | 30@0.53-3GHz | SMA |
| QLF-1000-30 | DC | 1 | 0.9 | 1.2 | 30@1.9-5GHz | SMA |
| QLF-1000-70 | DC | 1 | 1 | 1.5 | 70@1.3-4.2GHz | SMA |
| QLF-1200-60 | DC | 1.2 | 1 | 1.5 | 60@1.8-8GHz | SMA |
| QLF-1400-50 | DC | 1.4 | 2 | 1.6 | 50@2GHz max. | SMA |
| QLF-2000-50 | DC | 2 | 1 | 1.5 | 50@2.3-4GHz, 40@4~7GHz | SMA |
| QLF-2186-30 | 1.5 | 2.186 | 2 | 1.6 | 30@2.37-3GHz | SMA |
| QLF-2200-30 | DC | 2.2 | 0.9 | 1.2 (type) | 30@3-5GHz | SMA |
| QLF-2250-30 | DC | 2.25 | 1.2 | 1.2 (type) | 30@3-5GHz | SMA |
| QLF-2400-58 | DC | 2.4 | 2 | 1.7 | 58@3-18GHz | SMA |
| QLF-3000-30 | DC | 3 | 0.9 | 1.3 (type) | 30@4.78-7.5GHz | SMA |
| QLF-3200-40 | DC | 3.2 | 1 | 1.5 | 40@3.8-18GHz | SMA |
| QLF-3200-60 | DC | 3.2 | 1.5 | 1.5 | 60@3.6-20GHz | SMA |
| QLF-3500-40 | DC | 3.5 | 1.5 | 1.5 | 40@3.85-18GHz | SMA |
| QLF-3870-30 | DC | 3.87 | 2.5 | 1.7 | 30@4.32GHz | SMA |
| QLF-4000-50 | DC | 4 | 1 | 2 | 50@4.7-8GHz | SMA |
| QLF-4000-60 | DC | 4 | 1.5 | 1.3 | 60@4.5-12.3GHz | SMA |
| QLF-4400-40 | DC | 4.4 | 0.73 | 1.2 | 40@6.28-9.8GHz | SMA |
| QLF-5000-40 | DC | 5 | 0.68 | 1.2 | 40@7.05-10GHz | SMA |
| QLF-5000-45 | DC | 5 | 1 | 2 | 45@5.8-10.5GHz | SMA |
| QLF-5325-30 | DC | 5.325 | 1.5 | 1.5 | 30@5.925GHz | SMA |
| QLF-5500-60 | DC | 5.5 | 3 | 2 | 60@6-20GHz | SMA |
| QLF-6000-20 | 0.5 | 6 | 2 | 1.8 | 20@6.5GHz | SMA |
| QLF-6000-45 | DC | 6 | 1 | 2 | 45@6.8-10.5GHz | SMA |
| QLF-6000-60 | DC | 6 | 1.5 | 1.3 | 60@6.7-15.5GHz | SMA |
| QLF-6500-30 | DC | 6.5 | 1 | 1.8 | 30@8-15GHz | SMA |
| QLF-6500-60 | DC | 6.5 | 1.5 | 1.3 | 60@7.27-15.3GHz | SMA |
| QLF-7000-48 | DC | 7 | 1 | 2 | 48@7.8-11GHz | SMA |
| QLF-7000-50 | DC | 7 | 1.5 | 1.3 | 50@7.77-15.5GHz | SMA |
| QLF-8000-40 | DC | 8 | 2 | 2 | 40@9-25GHz | SMA |
| QLF-8000-40-1 | DC | 8 | 1.2 | 1.5 | 40@8.9-16GHz | SMA |
| QLF-8000-50 | DC | 8 | 1.5 | 1.4 | 50@8.8-16.2GHz | SMA |
| QLF-8000-50-1 | DC | 8 | 1 | 2 | 50@8.8-20GHz | SMA |
| QLF-8000-50-2 | DC | 8 | 1.2 | 2 | 50@9-18GHz | SMA |
| QLF-9000-50 | DC | 9 | 1.5 | 1.4 | 50@9.8-17GHz | SMA |
| QLF-9000-50-1 | DC | 9 | 1 | 2 | 50@15-22GHz | SMA |
| QLF-9000-60 | DC | 9 | 1 | 1.6 | 60@14-17GHz | SMA |
| QLF-9500-50 | DC | 9.5 | 1.5 | 1.4 | 50@10.2-18GHz | SMA |
| QLF-10000-20 | DC | 10 | 0.5 | 1.7 | 20@12GHz | SMA |
| QLF-10000-30 | DC | 10 | 1 | 1.7 | 30@13.2GHz | SMA |
| QLF-10000-30-1 | DC | 10 | 1 | 1.8 | 30@13-40GHz | SMA |
| QLF-10000-35 | DC | 10 | 1 | 2 | 35@11GHz | SMA |
| QLF-10000-50 | DC | 10 | 1.5 | 1.4 | 50@10.9-18.5GHz | SMA |
| QLF-11000-45 | DC | 11 | 2 | 1.8 | 45@12-24GHz | SMA |
| QLF-11000-50 | DC | 11 | 1.5 | 1.5 | 50@12.1-19GHz | SMA |
| QLF-11700-50 | DC | 11.7 | 2 | 1.7 | 50@12.7-13.45GHz | SMA |
| QLF-12000-70 | DC | 12 | 1 | 1.7 | 70@14-19GHz | SMA |
| QLF-13000-50 | DC | 13 | 2 | 1.5 | 50@14.1-21GHz | SMA |
| QLF-13000-55 | DC | 13 | 1.5 | 1.8 | 55@15.2-40GHz | SMA |
| QLF-14000-45 | DC | 14 | 1 | 1.8 | 45@20-40GHz | SMA |
| QLF-15000-50 | DC | 15 | 2.5 | 1.5 | 50@16-22.3GHz | SMA |
| QLF-16000-50 | DC | 16 | 1.5 | 2 | 50@16.8-24GHz | SMA |
| QLF-17000-50 | DC | 17 | 1.5 | 2 | 50@30-33GHz | SMA |
| QLF-18000-15 | DC | 18 | 1 | 1.7 | 15@20GHz | SMA |
| QLF-18000-35 | DC | 18 | 1.5 | 2 | 35@19-28GHz | SMA |
| QLF-18000-40 | DC | 18 | 2 | 2 | 40@20-38GHz | 2,92 mm |
| QLF-18000-45 | DC | 18 | 1.2 | 2 | 45@28-40GHz | SMA |
| QLF-18000-50 | DC | 18 | 3 | 1.6 | 50@19.1-26GHz | SMA |
| QLF-18000-50-1 | DC | 18 | 2 | 2 | 50@18.8-19.5GHZ | SMA |
| QLF-20000-25 | DC | 20 | 2 | 2 | 25@23-40GHz | SMA |
| QLF-20000-50 | DC | 20 | 1.2 | 2 | 50@22GHz | SMA |
| QLF-20000-60 | DC | 20 | 1 | 2 | 60@23-40GHz | 2,92 mm |
| QLF-20000-70 | DC | 20 | 1.5 | 1.8 | 70@24GHz | SMA |
| QLF-20000-75 | DC | 20 | 1.5 | 2 | 75@24-44GHz | SMA |
| QLF-25000-40 | DC | 25 | 2 | 2 | 40@28-30GHz | 2,92 mm |
| QLF-25000-40-1 | DC | 25 | 1.5 | 1.7 | 40@28-40GHz | 2,92 mm |
| QLF-25000-40-2 | DC | 25 | 2 | 2 | 40@28-40GHZ, 70@30-44GHz | 2,92 mm |
| QLF-26000-30 | DC | 26 | 1.5 | 1.7 | 30@28GHz | 2,92 mm |
| QLF-28000-30 | DC | 28 | 2 | 2 | 30@30-38GHz | 2,4 mm |
| QLF-33000-25 | DC | 33 | 3 | 2 | 25@37-50GHz | 2,92 mm |
| QLF-40000-20 | DC | 40 | 2 | 2 | 20@60GHz, 40@65GHz, 60@70GHz | 2,92 mm |
| QLF-50000-20 | DC | 50 | 2 | 2.5 | 20@60GHz | 2,4 mm |
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