Patent ID: 8139621

Claim:
A UWB modulating system for modulating at least one carrier signal with a duration enveloping pulses, the system including: a carrier generator adapted to generate the at least one carrier signal having at least one respective frequency; a pulse generator circuit for generating said enveloping pulses having a shape, suitable to be used for UWB transmission; and a multiplier circuit adapted to multiply the at least one carrier signal with said enveloping pulses, the pulse generator circuit including: an input adapted to receive an input electrical quantity; an output at which an output electrical quantity is made available in form of said enveloping pulses; and a transfer characteristic establishing a relationship between said input and said output electrical quantities, wherein the transfer characteristic has substantially a same shape as said shape; the UWB modulating system further including a driver circuit adapted to generate the input electrical quantity in the form of a linear ramp signal fed to the input of the pulse generator circuit.