A Reconfigurable Narrow-Band MB-OFDM UWB Receiver Architecture
This paper presents an analysis on the receiver front-end architectures for multiband orthogonal frequency-division multiplexing ultra-wide-band (UWB) terminals. An interference analysis is carried out in order to derive the main linearity specifications of the receiver front-end. A reconfigurable narrow-band architecture is introduced that can best cope with the main challenges of the UWB receivers: broadband impedance matching and high out-of-band linearity. Simulation results show that linearity requirements can be achieved with sizeable margin.