SC filter for RF sampling and downconversion with wideband image rejection

Authors:
Stefan Andersson;Jacek Konopacki;Jerzy Dąbrowski;Christer Svensson
Affiliations:
Department of Electrical Engineering, Linköping University, Sweden;Institute of Electronics, Silesian University of Technology, Poland;Department of Electrical Engineering, Linköping University, Sweden and Institute of Electronics, Silesian University of Technology, Poland;Department of Electrical Engineering, Linköping University, Sweden
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2006

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Abstract

In this paper we present an SC filter for RF downconversion using the direct RF sampling and decimation technique. The circuit architecture is generic and it features high image rejection for wideband signals and good linearity. An SC implementation in 0.13驴m CMOS suitable for an RF of 2.4 GHz and 20 MHz signal bandwidth is presented as a demonstrator. Simulation results obtained using Cadence Spectre simulation tools are included.