Fully differential baseband pulse generator for IEEE 802.15.4a standard

This paper presents a fully differential baseband pulse generator intended for Impulse-Radio Ultra-Wideband (IR-UWB) direct up-conversion transmitter architectures. The generator provides impulse related binary phase shift keying (BPSK) and on/off keying (OOK) modulation in accordance with the IEEE 802.15.4a standard. The logic part of the generator runs on a clock of 499.2 MHz allowing direct generation of single preamble impulses as well as data impulse bursts. While the pulse generator is digitally controlled at the input, the output provides an analogue signal ready to be shaped by a low-pass filter (LPF) and up-converted to the desired channel.