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Low Pass Filters RF Coaxial High Frequency Microstrip Microwave Millimeter Wave Xov tooj cua Frequency Suspended Stripline Waveguide
RF low pass filter yog lub teeb liab ua lim dej uas khaws cov cim tsis tshua muaj los ntawm kev tshem tawm cov teeb liab siab. Nws tso cai rau cov teeb liab nrog ntau zaus tsawg dua li ib qho chaw pib dhau, tab sis tsis lees paub cov cim nrog ntau zaus ntau dua li qhov pib.
Nta ntawm xov tooj cua zaus low pass filters:
1. Tsuas yog cov cim qhia hauv qab ib lub sijhawm tshwj xeeb raug tso cai hla dhau, thaum cov cim saum toj no tau lim lossis tsis muaj zog.
2. Thaum dhau los ntawm cov teeb liab tsawg zaus, yuav luag tsis muaj kev hloov pauv hauv theem.
3. Feem ntau, ib los yog ntau tshaj capacitors thiab inductors yog siv los tsim telecom low pass filters.
Daim ntawv thov ntawm coaxial low pass filters:
1.Smooth teeb liab
High zaus low pass lim yog tsuas yog siv los du lub teeb liab, nws muaj peev xwm tshem tawm cov suab nrov nyob rau hauv high-frequency teeb liab, thiaj li hais tias lub teeb liab yuav ruaj khov. Nyob rau hauv cov ntaub ntawv uas yuav tsum tau ib tug du teeb liab, lub microstrip low pass lim yuav tshem tawm high-frequency interference suab, yog li ua rau lub kaw lus txhim khu kev qha thiab ruaj khov.
2. Txo suab nrov
Tsawg dhau lim yuav tsis cuam tshuam rau lub teeb liab tsawg zaus, thaum khaws cov teeb liab tsawg zaus, lub suab nrov nrov tuaj yeem lim tawm. Hauv kev ua suab lossis kev ua duab, cov ntxaij lim dej qis dhau tuaj yeem lim tawm suab nrov thiab ua kom cov teeb liab ua tiav.
3. Txo qhov yuam kev
Tsawg dhau lim tuaj yeem txo qhov yuam kev, tshwj xeeb tshaj yog haum rau kev ntsuas ntsuas ntsuas. Hauv qee qhov kev xav tau kev ntsuas, qhov ntsuas qis dhau tuaj yeem tshem tawm cov suab nrov, cuam tshuam thiab lwm yam, kom qhov ntsuas ntsuas tau zoo dua thiab txhim khu kev qha.
4.Kev siv ntau yam
millimeter nthwv dej qis dhau lim dej muaj ntau yam kev siv, los ntawm suab mus rau duab, los ntawm kev sib txuas lus mus rau kev tswj, yuav luag txhua qhov chaw. Piv txwv li, nyob rau hauv baseband teeb liab ua, me me uas tsis muaj lim lim yog tsim nyog.
Hauv kev sib txuas lus, tshem tawm cov lim dej qis tuaj yeem lim tawm cov suab nrov nrov, cuam tshuam, thiab lwm yam, kom ntseeg tau tias kev sib txuas lus zoo; Hauv kev tswj hwm, lub stripline low pass lim yuav siv tau rau cov teeb liab smoothing thiab suab nrov filtering.
Qualwavekhoom siv microwave tsawg dhau cov lim dej hauv ntau zaus DC-50GHz. Lub waveguide low pass lim tau dav siv hauv ntau daim ntawv thov.
Tshooj Naj Npawb | Passband(GHz, Min.)  | Passband(GHz, Max.) | Insertion Poob(dB, Max.) | VSWR(Max.) | Stopband Attenuation(dB) | Cov khoom sib txuas |
|---|---|---|---|---|---|---|
| QLF-1-40 | DC | 0.001 ib | 1.5 | 1.5 | 40@2-4MHz, 50@4-100MHz | SMA |
| QLF-2-15-40 | 0.002 ib | 0.015 ib | 2.5 | 1.5 | 40 @ 17-200 MHz | SMA |
| QLF-2.5-50 | DC | 0.0025 Nws | 0.8 ua | 1.5 | 50 @ 5-50 MHz | SMA |
| QLF-5-50 | DC | 0.005 ib | 1 | 1.5 | 50@8-50MHz | SMA |
| QLF-10-50 | DC | 0.01 ib | 1 | 1.5 | 50 @ 13-150 MHz | SMA |
| QLF-30-40 | DC | 0.03 ib | 1 | 1.5 | 40 @ 45 MHz, 60 @ 60 MHz | SMA |
| QLF-32-40 | DC | 0.032 ib | 0.8 ua | 1.5 | 40@50-90MHz | N |
| QLF-45-20 | DC | 0.045 ib | 1 | 1.7 | 20@0.07-0.09GHz | SMA |
| QLF-55-35 | DC | 0.055 ib | 0.8 ua | 1.5 | 35@0.07-0.2GHz | SMA |
| QLF-125-60 | DC | 0.125 Nws | 2 | 1.5 | 60@0.15~0.6GHz | SMA |
| QLF-200-2400-60 | 0.2 | 2.4 | 5 | 1.5 | 60@3.6GHz | SMA |
| QLF-215-30 | DC | 0.215 ib | 0.6 | 1.4 | 30@0.35~1GHz | N |
| QLF-300-40 | DC | 0.3 | 1 | 1.5 | 40 @ 450 MHz, 60 @ 600 MHz | SMA |
| QLF-300-60 | DC | 0.3 | 0.5 | 1.5 | 60@0.643-3GHz | SMA |
| QLF-330-60 | DC | 0.33 ib | 0.5 | 1.3 | 60@0.643-3GHz | SMA |
| QLF-480-30 | DC | 0.48 ib | 3 | 1.5 | 30@0.53-3GHz | SMA |
| QLF-500-45 | DC | 0.5 | 1.5 | 1.8 | 45@0.6~1GHz | 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-1100-60 | DC | 1.1 | 0.9 | 1.4 | 60@1.5~3GHz | 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 ib | 2 | 1.6 | 30@2.37-3GHz | SMA |
| QLF-2200-30 | DC | 2.2 | 0.9 | 1.2 (typ.) | 30 @ 3-5 GHz | SMA |
| QLF-2250-30 | DC | 2.25 | 1.2 | 1.2 (typ.) | 30 @ 3-5 GHz | SMA |
| QLF-2250-60 | DC | 2.25 | 1.5 | 1.3 | 60@2.65~7.4GHz | SMA |
| QLF-2400-58 | DC | 2.4 | 2 | 1.7 | 58@3-18GHz | SMA |
| QLF-3000-30 | DC | 3 | 0.9 | 1.3 (typ.) | 30@4.78-7.5GHz | SMA |
| QLF-3000-60 | DC | 3 | 1.5 | 1.3 | 60@3.52~10GHz | 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@3.6GHz， 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 ib | 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 ib | 1.2 | 40@6.28-9.8GHz | SMA |
| QLF-5000-40 | DC | 5 | 0.68 ib | 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 ib | 1.5 | 1.5 | 30@5.925GHz | SMA |
| QLF-5500-60 | DC | 5.5 | 3 | 2 | 60 @ 6-20 GHz | 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 @ 8-15 GHz | 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 @ 9-25 GHz | 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 @ 15-22 GHz | SMA |
| QLF-9000-60 | DC | 9 | 1 | 1.6 | 60 @ 14-17 GHz | SMA |
| QLF-9500-50 | DC | 9.5 ib | 1.5 | 1.4 | 50@10.2-18GHz | SMA |
| QLF-10000-20 | DC | 10 | 0.5 | 1.7 | 20 @ 12 GHz | SMA |
| QLF-10000-30 | DC | 10 | 1 | 1.7 | 30@13.2GHz | SMA |
| QLF-10000-30-1 | DC | 10 | 1 | 1.8 | 30 @ 13-40 GHz | SMA |
| QLF-10000-35 | DC | 10 | 1 | 2 | 35 @ 11 GHz | SMA |
| QLF-10000-50 | DC | 10 | 1.5 | 1.4 | 50@10.9-18.5GHz | SMA |
| QLF-11000-50 | DC | 11 | 1.5 | 1.5 | 50@12.1-19GHz | SMA |
| QLF-11000-50-1 | DC | 11 | 2 | 1.7 | 50 @ 12-40 GHz | SMA |
| QLF-11700-50 | DC | 11.7 ib | 2 | 1.7 | 50@12.7-13.45GHz | SMA |
| QLF-12000-70 | DC | 12 | 1 | 1.7 | 70 @ 14-19 GHz | 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-13500-50 | DC | 13.5 Nws | 2 | 1.5 | 50@14.7-21.3GHz | SMA |
| QLF-14000-45 | DC | 14 | 1 | 1.8 | 45 @ 20 ~ 40 GHz | Φ 0.38 PIN |
| 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 @ 20 GHz | SMA |
| QLF-18000-35 | DC | 18 | 1.5 | 2 | 35 @ 19-28 GHz | SMA |
| QLF-18000-40 | DC | 18 | 2 | 2 | 40 @ 20-38 GHz | 2.92mm ib |
| QLF-18000-45 | DC | 18 | 1.2 | 2 | 45 @ 28-40 GHz | 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 @ 23-40 GHz | SMA |
| QLF-20000-50 | DC | 20 | 1.2 | 2 | 50 @ 22 GHz | SMA |
| QLF-20000-60 | DC | 20 | 1 | 2 | 60 @ 23-40 GHz | 2.92mm ib |
| QLF-20000-70 | DC | 20 | 1.5 | 1.8 | 70 @ 24 GHz | SMA |
| QLF-20000-75 | DC | 20 | 1.5 | 2 | 75 @ 24-44 GHz | SMA |
| QLF-25000-40 | DC | 25 | 2 | 2 | 40 @ 28-30 GHz | 2.92mm ib |
| QLF-25000-40-1 | DC | 25 | 1.5 | 1.7 | 40 @ 28-40 GHz | 2.92mm ib |
| QLF-25000-40-2 | DC | 25 | 2 | 2 | 40@28-40GHZ, 70@30-44GHz | 2.92mm ib |
| QLF-26000-30 | DC | 26 | 1.5 | 1.7 | 30 @ 28 GHz, 70 @ 29 ~ 40 GHz | SMA |
| QLF-28000-30 | DC | 28 | 2 | 2 | 30 @ 30-38 GHz | 2.4mm ib |
| QLF-33000-25 | DC | 33 | 3 | 2 | 25 @ 37-50 GHz | 2.92mm ib |
| QLF-40000-20 | DC | 40 | 2 | 2 | 20 @ 60 GHz, 40 @ 65 GHz, 60 @ 70 GHz | 2.92mm ib |
| QLF-50000-20 | DC | 50 | 2 | 2.5 | 20 @ 60 GHz | 2.4mm ib |
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