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  • Broad Band Low Noise Temperature Low Input VSWR Block Downconverters (LNBs)
  • Broad Band Low Noise Temperature Low Input VSWR Block Downconverters (LNBs)
  • Broad Band Low Noise Temperature Low Input VSWR Block Downconverters (LNBs)
  • Broad Band Low Noise Temperature Low Input VSWR Block Downconverters (LNBs)

    • Broad Band Low Noise Temperature Low Input VSWR Block Downconverters (LNBs)

    Features:

    • Broad Band
    • Low Noise Temperature
    • Low Input VSWR

    Applications:

    • Fixed Station
    • Mobile Station
    • Laboratory Test

    Block Downconverters (LNBs)

    In communication systems, in order to facilitate signal transmission and achieve channel reuse, the frequency of transmitted signals is very high, so frequency conversion of signals is an important aspect of communication system research. According to the situation before and after frequency conversion, it can be divided into down conversion (frequency reduction) and up conversion (frequency increase).
    In the receiver, if the intermediate frequency signal obtained after mixing is lower than the original signal, then this mixing method is called block downconverters (LNBs).
    The method of block downconverters is to multiply the received signal with the local oscillator signal generated by the local oscillator, and then obtain the converted signal through a low-pass filter. Two multiplied signals can be divided into real mixing and complex mixing through real or complex representation.
    The purpose of block downconverters is to reduce the carrier frequency of the signal or directly remove the carrier frequency to obtain the baseband signal. Due to its simple circuit and low cost, the down conversion method is widely used in civilian equipment and military equipment with low performance requirements.

    Application:

    1. Satellite TV: LNBs are key components in satellite TV reception systems. They are installed at the focal point of a satellite antenna (paraboloid or dish), receive the TV signal transmitted by the satellite, and convert it into an intermediate frequency signal that can be processed by the receiver.
    2. Satellite Internet: In satellite Internet systems, LNBs are used to receive Internet data transmitted from satellites. The user equipment receives the data through the LNB and decodes and processes it through the modem.
    3. Satellite Communications: LNBs are widely used in various satellite communications systems, including satellite phones, satellite broadcasts, satellite data transmission, etc. They help receive and process various types of communication signals transmitted from satellites.
    4. Earth Observation and Remote Sensing: In some Earth observation and remote sensing applications, LNBs are used to receive remote sensing data transmitted from satellites. These data can be used in meteorological monitoring, environmental monitoring, disaster warning and other fields.
    In summary, LNBs play a vital role in modern satellite communication systems and are widely used in television broadcasting, Internet access, data communications and various professional fields.

    Qualwave supplies various types of Block Downconverters (LNBs) in the S~Ka-Band, with a noise temperature of 45~240K. The terminationswith different type to meet the needs of customers.

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    LNBs
    Part Number Band Input RF Frequency (GHz) LO Frequency (GHz) Output IF Frequency (MHz) Gain (dB) NT(K) IF Connector VSWR (Max.) Lead Time (Weeks)
    QLB-2200-2700-60-50 S 2.2~2.7 3.65 950~1450 60 50 N, SMA, F 2.0/1.5 2~8
    QLB-3400-4200-60-40 C 3.4~4.2 5.15 950~1750 60 40 N, SMA, F 1.35/1.5 2~8
    QLB-3400-4200-60-45 C 3.4~4.2 5.15 950~1750 60 45 N, SMA, F 2.5/2.0 2~8
    QLB-3400-4800-60-75 C 3.4~4.8 5.15 or 5.75 950~1750 or 950~1550 60 75 N, SMA, F 1.5/1.5 2~8
    QLB-3625-4200-60-45 C 3.625~4.2 5.15 950~1520 60 45 N, SMA, F 2.5/2.0 2~8
    QLB-3700-4200-60-40 C 3.7~4.2 5.15 950~1450 60 40 N, SMA, F 1.35/1.5 2~8
    QLB-3700-4200-60-45 C 3.7~4.2 5.15 950~1450 60 45 N, SMA, F 2.5/2.0 2~8
    QLB-4500-4800-60-45 C 4.5~4.8 5.76 960~1260 60 45 N, SMA, F 2.5/2.0 2~8
    QLB-7250-7750-60-75 X 7.25~7.75 6.3 950~1450 60 75 N, SMA, F 1.5/2.0 2~8
    QLB-7750-8500-60-75-2 X 7.75~8.5 6.95 800~1550 60 75 N, SMA, F 1.5/2.0 2~8
    QLB-7750-8500-60-75 X 7.75~8.5 6.8 950~1700 60 75 N, SMA, F 1.5/2.0 2~8
    QLB-10700-11700-60-65 Ku 10.7~11.7 9.75 950~1950 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-10700-11700-60-65-2 Ku 10.7~11.7 9.75 950~1950 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-10700-12750-60-65 Ku 10.7~12.75 9.75 or 10.6 950~1950 or 1100~2150 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-10700-12750-60-65-2 Ku 10.7~12.75 9.75 or 10.75 950~2000 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-10700-12750-60-80 Ku 10.7~12.75 9.75 or 10.25 or 10.75 or 11.30 940~1500 or 950~1450 60 80 N, SMA, F 2.5/2.0 2~8
    QLB-10700-12750-60-80-2 Ku 10.7~12.75 9.75 or 10.75 or 11.30 950~1950 or 940~1500
    or 950~1450    		 60 80 N, SMA, F 2.5/2.0 2~8
    QLB-10700-12750-60-90 Ku 10.7~12.75 9.75 950~3000 60 90 N, SMA, F 1.35/1.5 2~8
    QLB-10700-12750-60-90-1 Ku 10.7~12.75 9.75 and 13.7 950~1950 and 950~2000 60 90 N, SMA, F 1.35/1.5 2~8
    QLB-10950-11700-60-65 Ku 10.95~11.7 10 950~1700 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-10950-12750-60-65 Ku 10.95~12.75 10 or 10.75 950~1700 or 950~2000 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-10950-12750-60-80 Ku 10.95~12.75 10 or 10.5 or 10.75 or 11.25 940~1500 or 950~1450 or 950~1500 60 80 N, SMA, F 2.5/2.0 2~8
    QLB-10950-12750-60-80-2 Ku 10.95~12.75 10 or 10.75 or 11.30 950~1700 or 940~1500 or 950~1450 60 80 N, SMA, F 2.5/2.0 2~8
    QLB-10950-12750-60-90 Ku 10.95~12.75 10 950~2750 60 90 N, SMA, F 1.35/1.5 2~8
    QLB-10950-12750-60-90-1 Ku 10.95~12.75 10 and 13.7 950~1700 and 950~2000 60 90 N, SMA, F 1.35/1.5 2~8
    QLB-11450-12750-60-70 Ku 11.45~11.7 and 12.25~12.75 9 2450~2700 and 3250~3750 60 70 N, SMA, F 2.5/2.0 2~8
    QLB-11700-12200-60-65 Ku 11.7~12.2 10.75 950~1450 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-11700-12200-60-65-2 Ku 11.7~12.2 10.75 950~1450 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-11700-12750-60-65 Ku 11.7~12.75 10.75 950~2000 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-11700-12750-60-80 Ku 11.7~12.75 10.75 950~2000 60 80 N, SMA, F 2.5/2.0 2~8
    QLB-12250-12750-60-65 Ku 12.25~12.75 11.3 950~1450 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-12250-12750-60-65-2 Ku 12.25~12.75 11.3 950~1450 60 65 N, SMA, F 2.5/2.0 2~8
    QLB-17200-19200-60-150-1 Ka 17.2~19.2 16.25 and 20.15 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-17200-21200-60-170 Ka 17.2~21.2 16.25 or 17.25 or 18.25 or 19.25 950~1950 60 170 N, SMA, F 1.35/1.5 2~8
    QLB-17200-21200-60-170-1 Ka 17.2~21.2 16.25 and 17.25 and 21.15 and 22.15 950~1950 and 950~1950 60 170 N, SMA, F 1.35/1.5 2~8
    QLB-17200-22200-60-240 Ka 17.2~22.2 16.25 or 17.25 or 18.25 or 19.25 or 20.25 950~1950 60 240 N, SMA, F 1.5/2.0 2~8
    QLB-17300-20200-60-150 Ka 17.3~20.2 16.35 or 17.35 or 18.35 950~1950 or 950~1850 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-17300-20200-60-150-2 Ka 17.3~20.2 16.35 or 17.35 or 18.35 950~1950 or 950~1850 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-17300-22300-60-170 Ka 17.3~22.3 16.35 or 17.60 or 18.85 or 20.10 950~2200 60 170 N, SMA, F 1.35/1.5 2~8
    QLB-17300-22300-60-170-1 Ka 17.3~22.3 16.35/22 or 17.6/22 or 16.35/23.25 or 17.6/23.25 950~2200 and 950~2200 60 170 N, SMA, F 1.35/1.5 2~8
    QLB-17700-21200-60-170 Ka 17.7~21.2 16.75 or 17.25 or 18.25 or 19.25 950~1450 or 950~1950 60 170 N, SMA, F 1.35/1.5 2~8
    QLB-17700-21200-60-170-1 Ka 17.7~21.2 16.75/21.15 or 17.75/21.15 or 16.75/22.15 or 17.75/22.15 950~1950 and 950~1950 60 170 N, SMA, F 1.35/1.5 2~8
    QLB-18200-20200-60-150 Ka 18.2~20.2 17.25 or 18.25 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-18200-20200-60-150-1 Ka 18.2~20.2 17.25 and 18.25 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-18200-21200-60-150 Ka 18.2~21.2 17.25 or 18.25 or 19.25 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-18200-21200-60-150-2 Ka 18.2~21.2 17.25 or 18.25 or 19.25 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-19200-21200-60-150 Ka 19.2~21.2 18.25 or 19.25 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-19200-21200-60-150-1 Ka 19.2~21.2 21.15 and 22.15 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-19600-21200-60-150 Ka 19.6~21.2 17.4 2200~3800 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-20200-22200-60-150 Ka 20.2~22.2 19.25 or 20.25 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    QLB-20200-22200-60-150-1 Ka 20.2~22.2 19.25 and 23.15 950~1950 60 150 N, SMA, F 2.5/2.0 2~8
    Anti 5G Interference LNBs
    Part Number Band Input RF Frequency (GHz) LO Frequency (GHz) Output IF Frequency (MHz) Gain (dB) NT(K) IF Connector VSWR (Max.) Lead Time (Weeks)
    QLB-3625-4200-60-50 C 3.625~4.2 - 950~1525 60 50 N, SMA, F 2.5/2.0 2~8
    QLB-3700-4200-60-50 C 3.7~4.2 - 950~1450 60 50 N, SMA, F 2.5/2.0 2~8
    QLB-3700-4200-60-45-2 C 3.7~4.2 - 950~1450 60 45 N, SMA, F 2.5/2.0 2~8
    QLB-3800-4200-60-50 C 3.8~4.2 - 950~1350 60 50 N, SMA, F 2.5/2.0 2~8
    QLB-3800-4200-60-45 C 3.8~4.2 - 950~1350 60 45 N, SMA, F 2.5/2.0 2~8

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