Interference Filtering with On-Chip Frequency-Translated Filters in Wireless Receivers

This chapter introduces frequency-translated filters that are used in wireless receivers to deal with interferers. These filters frequency-translate baseband impedances to synthesize high-Q band-pass filters (BPFs) with center frequencies precisely controlled by a clock frequency [1-6]. These filters are composed of only MOS switches and capacitors, making them ideal for integration while they follow the technology scaling.