Variable Bandwidth Analog Channel Filters for Software Defined Radio


Arkesteijn, Vincent J. and Klumperink, Eric A.M. and Nauta, Bram (2001) Variable Bandwidth Analog Channel Filters for Software Defined Radio. In: ProRISC 2001, 12th Annual Workshop on Circuits, Systems and Signal Processing, 29-30 November 2001, Veldhoven, the Netherlands (pp. pp. 258-261).

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Abstract: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.
Item Type:Conference or Workshop Item
Copyright:©2001 STW Technology Foundation
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Metis ID: 201858