Pulse shaping for a baseband wireless transmitter

An apparatus for generating a baseband signal having a plurality of positive going and negative going excursions generated from an input pulse, comprising:

• an input node coupled to a source of said input pulse;
• an output node;
• a pull-up circuit coupled to said output node;
• a pull-down circuit coupled to said output node;
• a first plurality of pairs of pulse generators in said pull-up circuit coupled to said input node, each of said first plurality generating a pull-up turn-on signal and a pull-up turn-off signal for each of one of a plurality of positive-going excursions of the baseband signal;
• and
• a second plurality of pairs of pulse generators in said pull-down circuit coupled to said input node, each of said second plurality generating a pull-down turn-on signal and a pull-down turn off signal for each one of a plurality of negative-going excursions of the baseband signal.

A method for generating a baseband signal having a plurality of positive going and negative going excursions from an input pulse comprising:

• providing an input node coupled to a source of said input pulse;
• providing an output node;
• providing a pull-up circuit coupled to said output node;
• providing a pull-down circuit coupled to said output node;
• generating a pull-up turn-on signal and pull-up turn-off signal for each one of a plurality of positive-going excursions of the baseband signal;
• and
• generating a pull-down turn-on signal and a pull-down turn-off signal for each one of a plurality of negative going excursions of the baseband signal.