Kenmerke:
- Hoë Stopband Verwerping
- Klein Grootte
'n Laagdeurlaatfilter is 'n seinverwerkingsfilter wat laefrekwensieseine bewaar deur hoëfrekwensieseine te verwyder. Dit laat seine met frekwensies minder as 'n sekere drempel slaag, maar verwerp seine met frekwensies groter as daardie drempel.
1. Slegs seine onder 'n spesifieke frekwensie word toegelaat om deur te gaan, terwyl seine bo daardie frekwensie gefiltreer of verswak word.
2. Wanneer daar deur lae-frekwensie seine beweeg word, is daar byna geen verandering in fase nie.
3. Gewoonlik word een of meer kapasitors en induktors gebruik om laagdeurlaatfilters te konstrueer.
1.gladde sein
laagdeurlaatfilter word hoofsaaklik gebruik om die sein glad te maak, dit kan die geraas in die hoëfrekwensiesein verwyder, sodat die sein meer stabiel word. In gevalle waar 'n gladde sein vereis word, kan die laagdeurlaatfilter hoëfrekwensie-interferensiegeraas verwyder en sodoende die stelsel meer betroubaar en stabiel maak.
2.geraasvermindering
laagdeurlaatfilter sal nie die lae-frekwensie sein beïnvloed nie, terwyl die lae-frekwensie sein behou word, kan hoëfrekwensie geraas uitgefiltreer word. In klankverwerking of beeldverwerking kan laagdeurlaatfilters geraas uitfiltreer en die verwerkte sein duideliker maak.
3. verminder die fout
laagdeurlaatfilter kan die fout verminder, veral geskik vir presisie-instrumentmeting. In sommige veeleisende metings kan die laagdeurlaatfilter geraas, steurings en ander faktore verwyder, sodat die metingsresultate meer akkuraat en betroubaar is.
4.wye reeks toepassings
Laagdeurlaatfilter het 'n baie wye reeks toepassings, van oudio tot beeld, van kommunikasie tot beheer, byna oral. Byvoorbeeld, in basisbandseinverwerking is 'n laagdeurlaatfilter nodig.
In kommunikasie kan laagdeurlaatfilter hoëfrekwensiegeraas, steurings, ens., uitfiltreer om kommunikasiekwaliteit te verseker; Op die gebied van beheer kan die laagdeurlaatfilter gebruik word vir sein gladmaak en geraasfiltrering.
Kwalgolfverskaf hoë stopband verwerping laagdeurlaatfilters in frekwensiereeks DC-50GHz. Die laagdeurlaatfilters word wyd in baie toepassings gebruik.
Deelnommer | Pasband(GHz, min.) | Pasband(GHz, maks.) | Invoeging verlies(dB, maks.) | VSWR(Maks.) | Stopband Demping(dB) | Koppelstukke |
---|---|---|---|---|---|---|
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 maksimum. | 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 (tipe) | 30@3-5GHz | SMA |
QLF-2250-30 | DC | 2.25 | 1.2 | 1.2 (tipe) | 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 (tipe) | 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 |