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Noise-power trade-off in CMOS-GM-C channel select filters

: Christoffers, N.; Fedtschenko, T.; Stücke, T.


Napieralski, A.:
International Conference Mixed Design of Integrated Circuits and Systems, MIXDES 2006. Proceedings : Gdynia, Poland, 22 - 24 June, 2006
Gdynia, 2006
ISBN: 83-922632-1-9
International Conference Mixed Design of Integrated Circuits and Systems (MIXDES) <13, 2006, Gdynia>
Conference Paper
Fraunhofer IMS ()
Gm-C-Filter; noise; analog/digital partitioning

The channel selection in direct-downconversion receivers can be performed using analog or digital filters or a combination of both. For an appropriate partitioning in an early design phase knowledge about the power-performance tradeoffs of the building blocks is necessary without knowledge about too many implementation details. This paper proposes a method to carry out the noise-power trade-off of analog Gm-C-Filters. For a particular example where the demand on adjacent channel rejection is very high it will be shown that the analog solution is very promising when compared to the digital channel selection.