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  • Low Pass Filters RF Coaxial High Frequency Microstrip Microwave Millimeter Wave Radio Frequency Suspended Stripline Waveguide
  • Low Pass Filters RF Coaxial High Frequency Microstrip Microwave Millimeter Wave Radio Frequency Suspended Stripline Waveguide
  • Low Pass Filters RF Coaxial High Frequency Microstrip Microwave Millimeter Wave Radio Frequency Suspended Stripline Waveguide
  • Low Pass Filters RF Coaxial High Frequency Microstrip Microwave Millimeter Wave Radio Frequency Suspended Stripline Waveguide
  • Low Pass Filters RF Coaxial High Frequency Microstrip Microwave Millimeter Wave Radio Frequency Suspended Stripline Waveguide

    Features:

    • High Stopband Rejection
    • Small Size

    Applications:

    • Telecom
    • Laboratory
    • Test Receivers
    • Instrumentation

    RF low pass filter is a signal processing filter that preserves low frequency signals by removing high frequency signals. It allows signals with frequencies less than a certain threshold to pass, but rejects signals with frequencies greater than that threshold.

    Features of radio frequency low pass filters:

    1. Only signals below a specific frequency are allowed to pass through, while signals above that frequency are filtered or weakened.
    2. When passing through low-frequency signals, there is almost no change in phase.
    3. Usually, one or more capacitors and inductors are used to construct telecom low pass filters.

    Application of coaxial low pass filters:

    1.Smooth signal
    High frequency low pass filter is mainly used to smooth the signal, it can remove the noise in the high-frequency signal, so that the signal becomes more stable. In cases where a smooth signal is required, the microstrip low pass filter can remove high-frequency interference noise, thus making the system more reliable and stable.
    2.Noise reduction
    Low pass filter will not affect the low-frequency signal, while retaining the low-frequency signal, high-frequency noise can be filtered out. In audio processing or image processing, low pass filters can filter out noise and make the processed signal clearer.
    3.Reduce the error
    Low pass filter can reduce the error, especially suitable for precision instrument measurement. In some demanding measurements, the low pass filter can remove noise, interference and other factors, so that the measurement results are more accurate and reliable.
    4.Wide range of application
    Millimeter wave low pass filter has a very wide range of applications, from audio to image, from communication to control, almost everywhere. For example, in baseband signal processing, small size low pass filter is necessary.
    In communication, suspended low pass filter can filter out high-frequency noise, interference, etc., to ensure communication quality; In the field of control, the stripline low pass filter can be used for signal smoothing and noise filtering.

    Qualwave supplies microwave low pass filters in frequency range DC-50GHz. The waveguide low pass filters are widely used in many applications.

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    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-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 2 1.6 30@2.37-3GHz SMA
    QLF-2200-30 DC 2.2 0.9 1.2(typ.) 30@3-5GHz SMA
    QLF-2250-30 DC 2.25 1.2 1.2(typ.) 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(typ.) 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@3.6GHz, 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 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-11000-50 DC 11 1.5 1.5 50@12.1-19GHz SMA
    QLF-11000-50-1 DC 11 2 1.7 50@12-40GHz 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-13500-50 DC 13.5 2 1.5 50@14.7-21.3GHz 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 2.92mm
    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 2.92mm
    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 2.92mm
    QLF-25000-40-1 DC 25 1.5 1.7 40@28-40GHz 2.92mm
    QLF-25000-40-2 DC 25 2 2 40@28-40GHZ, 70@30-44GHz 2.92mm
    QLF-26000-30 DC 26 1.5 1.7 30@28GHz, 70@29~40GHz SMA
    QLF-28000-30 DC 28 2 2 30@30-38GHz 2.4mm
    QLF-33000-25 DC 33 3 2 25@37-50GHz 2.92mm
    QLF-40000-20 DC 40 2 2 20@60GHz, 40@65GHz, 60@70GHz 2.92mm
    QLF-50000-20 DC 50 2 2.5 20@60GHz 2.4mm

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