DESIGN OF AN ENERGY-EFFICIENT PULSED UWB RECEIVER

This paper studies the different power-performance trade-offs at architectural and block level to come to the most energy-efficient UWB system for operation in the 0-960MHz frequency band. This is achieved by designing for

the lowest energy per useful received bit

. Different receiver architectures are explored and compared against each other. After the selection of the most optimal architecture, the trade-offs inside the different analog building blocks of this receiver are studied. Our results show that the most energy-efficient solution makes use of a complex analog correlation UWB receiver, with an LNA with a P

in,1dBc

back-off of -5dB, 3-bit ADC’s and a 500MHz QVCO. The requirements for the ADC offset, QVCO phase noise and mixer linearity are rather relaxed, which enables a low-power implementation.