A 130 nm CMOS IR-UWB receiver based on baseband cross-phase detection

This paper presents an IR-UWB receiver robustly detecting pulses w.r.t. in-band and out-of-band non-pulsed narrowband signals. The system cross-filters the baseband pulse detector output with two different transfer functions to detect fast UWB signals phase advance. The baseband output is indeed low-pass filtered and dynamically subtracted with incoming UWB pulses which have larger bandwidth occupation, hence a larger envelope derivative. The circuit is implemented in a 130 nm RFC-MOS technology and occupies an area of 1110×550μm². Here we introduce the design of the receiver and show first early qualitative results showing reliable transmission of pulse events with a range in excess of 5 m and an integrated all-digital IR-UWB transmitter.