Methods and systems relating to ultra wideband transmitters

A transmitter for an impulse radio comprising:

• a radio frequency (RF) signal generator for transmitting data, the RF signal generator receiving a data signal to be transmitted and a clock signal characterized by a clock frequency and coupled to an RF antenna and a control circuit;
• the control circuit for controlling the generation of the transmitted data such that each bit being transmitted is comprised of a plurality N pulses generated by the RF signal generator wherein each pulse of the N pulses is at a predetermined frequency of a plurality M frequencies, has a predetermined amplitude, and has a predetermined pulse length;
• wherein N≥2 and M≥2;
• M and N are integers;
• wherein the RF signal generator comprises
• an AND gate receiving a pulse clock signal and the data signal thereby generating a series of pulses having a pulse repetition rate set by the pulse clock signal and the number of pulses within the series of pulses set by a length of a data signal high;
• and
• a pulse generator generating pulses having Gaussian shaped pulse when triggered by a rising edge of each pulse generated by the AND gate;
• wherein the pulse generator comprises:
• a first transistor coupled to an input port of the pulse generator receiving the series of pulses output by the AND gate;
• an output port providing an output pulse to subsequent stages of the RF signal generator;
• a second transistor coupled to the output port;
• a third transistor disposed between the first transistor and second transistor and R serially connected inverter stages;
• and
• the R inverter stages;
• wherein R is a positive integer;
• upon the data signal at the input port of the pulse generator going high with the output of the pulse generator low a node at which the first transistor, second transistor, and third transistor are coupled goes high and this voltage propagates through the R inverter stages to generate the rising edge of the pulse being generated by the pulse generator;
• upon the output of the pulse generator going high the second transistor is activated and the voltage at the node discharges which again propagates through the R inverter stages to generate a falling edge of the pulse being generated by the pulse generator.