Abstract

A radio-frequency front-end receiver, based on double-quadrature architecture within polyphase filters to achieve high image rejection ratio (IRR), is proposed in this paper. A tunable polyphase filter topology that allows counteracting the process spread and frequency drifts is dealt with. The 2.4GHz image rejection front-end, implemented in 130nm standard CMOS technology, ensures more than 60dB IRR and good linearity in high frequency applications.

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