Variable Bandwidth Analog Channel Filters for Software Defined Radio

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    An important aspect of Software Defined Radio is the ability to define the bandwidth of the filter that selects the desired channel. This paper first explains the importance of channel filtering. Then the advantage of analog channel filtering with a variable bandwidth in a Software Defined Radio is demonstrated. This is done by comparing the requirements of the analog-to-digital converter with and without an analog filter with a variable bandwidth. Then, a technique for channel filtering is described, in which two passive filters are combined to obtain a variable bandwidth. Passive filters have the advantage of high linearity, low noise and inherent energy efficiency. Some limitations of the concept are discussed. Finally, conclusions are drawn and our ideas for further research are presented.
    Original languageUndefined
    Title of host publicationthe 12th ProRISC Workshop (Program for Research on Integrated Systems and Circuits)
    Place of PublicationUtrecht
    Number of pages4
    ISBN (Print)90-73461-29-4
    Publication statusPublished - Nov 2001
    Event14th ProRISC Workshop on Circuits, Systems and Signal Processing 2003 - Veldhoven, Netherlands
    Duration: 25 Nov 200327 Nov 2003
    Conference number: 14

    Publication series

    PublisherSTW Technology Foundation


    Workshop14th ProRISC Workshop on Circuits, Systems and Signal Processing 2003
    Abbreviated titleProRISC


    • METIS-201858
    • EWI-14353
    • flexibility
    • Software Defined Radio
    • passive filter
    • analog front-end
    • IR-42539

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