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Bandwidth

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  • #34223 Reply
    Juan Marin
    Guest

    i have problems to calculate the bandwidth in a trasmission line, if somebody can tell me where i can get some information or the equations, its gonna be great
    thanks.

    #34224 Reply
    Sudhir
    Guest

    Microwave Equations i can provide u.

    #34225 Reply
    Sudhir
    Guest

    Ok, will be great to get the equations,thanks i will waiting.
    thanks

    #34226 Reply
    Zoom
    Guest

    Bandwidth depends on the type of Modulation technique used.

    RF Bandwidth/bit= (1+alpha)/S
    where
    alpha is the filter coefficient
    S= symbol rate.

    for Eg: calulate the total RF bandwidth required by a DMR to transmit 16E1s(32.768Mbps) using QPSK modulation? assume alpha=0.3

    for QPSK S=2
    RF Bandwidth/Bit= (1+0.3)/2
    = 0.65Hz

    total bandwidth required for transmiting 32.768Mbps= 0.65*32.678
    = 21.3Mhz.

Viewing 4 posts - 1 through 4 (of 4 total)
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