Vipengele:
- Kukataliwa kwa Bendi ya Juu
- Ukubwa Mdogo
Kichujio cha pasi ya chini ni kichujio cha usindikaji wa ishara ambacho huhifadhi mawimbi ya masafa ya chini kwa kuondoa mawimbi ya masafa ya juu. Huruhusu mawimbi yenye masafa ya chini ya kizingiti fulani kupita, lakini hukataa mawimbi yenye masafa makubwa zaidi ya kizingiti hicho.
1. Ishara zilizo chini ya masafa mahususi pekee ndizo zinazoruhusiwa kupita, huku mawimbi yaliyo juu ya masafa hayo yanachujwa au kudhoofishwa.
2. Wakati wa kupitia ishara za chini-frequency, kuna karibu hakuna mabadiliko katika awamu.
3. Kawaida, capacitor moja au zaidi na inductors hutumiwa kujenga filters za chini.
1.ishara laini
chujio cha chini-kupita hutumiwa hasa kulainisha ishara, inaweza kuondoa kelele katika ishara ya juu-frequency, ili ishara inakuwa imara zaidi. Katika hali ambapo ishara laini inahitajika, chujio cha chini-chini kinaweza kuondoa kelele ya kuingiliwa kwa mzunguko wa juu, na hivyo kufanya mfumo kuwa wa kuaminika zaidi na imara.
2.kupunguza kelele
chujio cha pasi-chini hakitaathiri mawimbi ya masafa ya chini, huku kikibakiza mawimbi ya masafa ya chini, kelele ya masafa ya juu inaweza kuchujwa. Katika usindikaji wa sauti au uchakataji wa picha, vichujio vya pasi ya chini vinaweza kuchuja kelele na kufanya mawimbi yaliyochakatwa kuwa wazi zaidi.
3.punguza kosa
chujio cha pasi ya chini kinaweza kupunguza hitilafu, hasa yanafaa kwa kipimo cha chombo cha usahihi. Katika baadhi ya vipimo vinavyohitajika, chujio cha chini cha kupitisha kinaweza kuondoa kelele, kuingiliwa na mambo mengine, ili matokeo ya kipimo ni sahihi zaidi na ya kuaminika.
4.wide wa maombi
Kichujio cha pasi cha chini kina anuwai ya matumizi, kutoka kwa sauti hadi picha, kutoka kwa mawasiliano hadi kudhibiti, karibu kila mahali. Kwa mfano, katika usindikaji wa ishara ya baseband, chujio cha kupitisha chini ni muhimu.
Katika mawasiliano, kichujio cha pasi-chini kinaweza kuchuja kelele ya juu-frequency, kuingiliwa, nk, ili kuhakikisha ubora wa mawasiliano; Katika uwanja wa udhibiti, kichujio cha kupitisha chini kinaweza kutumika kwa kulainisha ishara na kuchuja kelele.
Qualwavehutoa kukataliwa kwa vichungi vya chini vya pasi katika masafa ya DC-50GHz. Vichungi vya kupitisha chini hutumiwa sana katika programu nyingi.
Nambari ya Sehemu | Pasipoti(GHz, Min.) | Pasipoti(GHz, Max.) | Hasara ya Kuingiza(dB, Max.) | VSWR(Upeo.) | Stopband Attenuation(dB) | Viunganishi |
---|---|---|---|---|---|---|
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 | Upeo wa 50@2GHz. | 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 (aina.) | 30@3-5GHz | SMA |
QLF-2250-30 | DC | 2.25 | 1.2 | 1.2 (aina.) | 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 (aina.) | 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 |