Harmonic rejection load tuner

A method for performing output characterization of a device under test (DUT), where said DUT has an input and an output, comprising the steps of:

• (a) inputting a signal into the input of the DUT with a signal generator;
• (b) outputting the output of the DUT into means for reflecting out at least one harmonic frequency of a base frequency where said means comprise a transmission line and at least one stub having a length adapted to reflect out the at least one harmonic frequency;
• (c) outputting an output of said means into a large band tuner;
• and
• (d) measuring the output of said large band tuner.

A harmonic rejection load pull tuner comprising:

• a large-band tuner having an input and an output, said input being connected to the output of a signal generator;
• means for reflecting at least one harmonic frequency of a base frequency, said means having an input and an output, said input being connected to the output of said large-band tuner, and said output being connected to an input of a device under test (DUT), where said means for reflecting at least one harmonic frequency include:
• a transmission line having a longitudinal axis;
• and
• at least one stub in parallel with said transmission line, said stub being galvanically connected with the longitudinal axis and having a length adapted to reflect out an nth order harmonic of a base frequency, where n is an integer greater than 1.

A method for performing input characterization of a device under test (DUT), where said DUT has an input and an output, comprising the steps of:

• (a) inputting a signal into a large-band tuner,
• (b) outputting the output of the large-band tuner into means for reflecting out at least one harmonic frequency of a base frequency including a transmission line and at least one moveable stub for reflecting out at least one harmonic frequency, said stub being galvanically connected with the longitudinal axis;
• (c) outputting the output of the means into the input of the DUT;
• and
• (d) measuring the output of said DUT.