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  1. #1
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    Filters in wideband application of SDR.

    Hello,
    In a SDR system down conversion is usually done digitally, possibly with DDC components.

    I have a problem of creating wide band (around 50 MHz) filters because of the need for many FIR taps and high data rates.
    I have received a suggestion to use a DDC component utilizing two of its channels to process the I and Q portions separately and hence increase my overall tap number but the suggestion claims 25MHz filters on I and Q separately to accommodate a 50 MHz overall.

    Does this sound reasonable? how can 25MHz filters on I and Q give 50MHz overall? have i misunderstood somehow? if you guys can try and clarify this for me that would be great.

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  2. #2
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    Re: Filters in wideband application of SDR.




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