Non-linear transmission line (NLTL) frequency comb generator and formed multiplier

A frequency multiplier comprising:

• an oscillator outputting a clock signal having a clock frequency;
• a non-linear transmission line (NLTL) frequency comb generator receiving the clock signal and generating an output signal that comprises multiple harmonics of the clock signal, the NLTL frequency comb generator comprises a plurality of segments cascaded in series to form a signal propagation path, each segment comprising:
• a series inductor;
• a shunt capacitor coupled to the series inductor in a polarity;
• and
• a reverse shunt capacitor coupled to the series inductor in an opposite polarity of the shunt capacitor, the shunt capacitor and the reverse shunt capacitor have variable capacitance;
• and
• a band-pass filter (BPF) filtering the output signal and outputting a frequency-multiplied signal that has a frequency multiple of the clock signal.

A method for harmonic signal generation comprising following steps:

• outputting, from an oscillator, a clock signal having a clock frequency;
• and
• generating, by a non-linear transmission line (NLTL) frequency comb generator, an output signal comprising multiple harmonics of the clock signal with one or more even harmonics suppressed, the NLTL frequency comb generator comprises a plurality of segments cascaded in series to form a signal propagation path, each segment comprising:
• a series inductor;
• a shunt capacitor coupled to the series inductor in a polarity;
• and
• a reverse shunt capacitor coupled to the series inductor in an opposite polarity of the shunt capacitor, the shunt capacitor and the reverse shunt capacitor have variable capacitance.