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Digitally tuneable bandpass filter for cognitive radio application

 
: Jaschke, A.; Schühler, M.; Tessema, M.; Wansch, R.

:

Institute of Electrical and Electronics Engineers -IEEE-:
17th IEEE International Workshop on Computer Aided Modeling and Design of Communication Links and Networks, CAMAD 2012. Proceedings : 17-19 September 2012, Barcelona, Spain
Piscataway: IEEE, 2012
ISBN: 978-1-4673-3123-4 (print)
ISBN: 978-1-4673-3124-1 (Online)
ISBN: 978-1-4673-3125-8
S.338-342
International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD) <17, 2012, Barcelona>
Englisch
Konferenzbeitrag
Fraunhofer IIS ()

Abstract
A lumped-element tunable pre-selection bandpass is presented that consists of three coupled resonators. The bandpass employs a digitally tunable capacitor (DTC) and allows for tuning of the centre frequency with a resolution of 5 bit. It covers the frequency range from 450 MHz to 940 MHz, including the DVB- T band, the TV white space (TVWS) band, and the LTE-800 frequency band. The insertion-loss variation amounts to 0.3 dB. The filter measures 20mm by 20mm, it can therefore be easily integrated into analog RF front-ends. The filter s application to cognitive-radio platforms is discussed. Index Terms cognitive radio, digitally tunable capacitor (DTC), tunable bandpass filter

: http://publica.fraunhofer.de/dokumente/N-232922.html