  An energy efficient ultra-wideband (UWB) transmitter based on the novel
transmitted reference pulse cluster (TRPC) modulation scheme is presented. The
TRPC-UWB transmitter integrates, namely, wideband active baluns, wideband I-Q
modulator based up-conversion mixer, and differential to single-ended
converter. The integrated circuits of TRPC-UWB front end is designed and
implemented in the 130-nm CMOS process technology. the measured worst-case
carrier leakage suppression is 22.4 dBc, while the single sideband suppression
is higher than 31.6 dBc, operating at the frequency from 3.1 GHz to 8.2 GHz.
With adjustable data rate of 10 to 300 Mbps, the transmitter achieves a high
energy efficiency of 38.4 pJ/pulse.
