A fully-integrated low power PAM/PPM multi-channel UWB transmitter

Abstract

A new transmitter for ultra-wideband (UWB)

impulse radio is described in this paper. The proposed

architecture features the simple design, low-power operation, and

enables the pulse-shape generation for 2 modulation schemes for a

multi-channel UWB. The average power calculation is presented

for pulse trains using Pulse-Amplitude Modulation (PAM) and

Pulse-Position Modulation (PPM). The design is based on a

0.18-μm CMOS process. The core layout size is only 0.35 mm2.

The simulation results show that the generated signals satisfy the

FCC spectrum mask, and the average power consumption is less

than 1.7mW for these two types of signaling at a 1.8 V supply

voltage. Pulses are transmitted at a PRF (Pulse Repetition

Frequency) of 52MHz in 520 MHz bandwidth channels equally

spaced within the 3.1-10.6 GHz ultra-wideband band.