Patent ID: 7822097

Claim:
A method for generating an ultra-wideband communications signal, comprising in combination: generating at least one piecewise linear pulse having at least two substantially linear parts, wherein at least one of the substantially linear parts is formed by charging at least a first capacitor and a second capacitor and at least the other of the substantially linear parts is formed by discharging at least the first and second capacitors; generating a piecewise linear ultra-wideband baseband signal having at least one of the piecewise linear pulses, wherein the baseband signal is generated based on an inputted data signal; generating a carrier tone having a carrier frequency suitable for wireless transmission; upconverting the baseband signal with the carrier tone to the carrier frequency, thereby generating the ultra-wideband communications signal; generating a timing signal arranged for timing the charging and the discharging of at least the first and second capacitors, wherein the timing signal is based on the output of a comparator comparing a voltage on the first capacitor and the second capacitor with a reference voltage; and connecting and disconnecting at least the first capacitor from the comparator using a data signal controlled switch, wherein the second capacitor is parallel to the first capacitor and the switch.