Highly integrated and tunable RF front-ends for reconfigurable multi-band transceivers

Architectural and circuit techniques to integrate the RF front-end passive components, namely the SAW filters and duplexers that are traditionally implemented off chip, are presented. Intended for software defined radios, tunable high-Q filters allow the integration of highly reconfigurable transceiver front-ends that are robust to in-band and out-of-band blockers. Furthermore, duplexer techniques based on electrical balance concept are introduced to enable highly integrated and programmable radios for full duplex applications such as 3/4G transceivers.