Pulse generator and method of generating pulses, such as for template generation in impulse radio systems

A pulse generator, comprising:

• a delay line arranged to receive a digital input signal and to produce a plurality of delay line output signals each comprising a differently delayed version of said input signal;
• first and second pulse generator blocks, each of said pulse generator blocks comprising logic circuitry arranged to receive, at a plurality of logic circuitry inputs, different ones of said plurality of delay line output signals, each of said pulse generator blocks being arranged to generate a plurality of successive first output pulses in response to said delay line output signals;
• and
• pulse combiner circuitry arranged to combine said first output pulses in order to produce, in response to said first output pulses from each of said pulse generator blocks, a corresponding plurality of second output pulses;
• wherein first pulse generator block is arranged to be responsive to a rising edge of said input signal so as to produce a first multi-member set of said first output pulses derived from successively delayed versions of said rising edge, and wherein said second pulse generator block is arranged to be responsive to a falling edge of said input signal so as to produce a second multi-member set of said first output pulses derived from successively delayed versions of falling edge.