High linearity circuits and methods regarding same

A method to improve linearity in electrical circuitry, the method comprising:

• providing a primary circuit;
• providing at least one auxiliary circuit, wherein the at least one auxiliary circuit is substantially functionally identical to the primary circuit, and further wherein the at least one auxiliary circuit has a gain that is different than a gain of the primary circuit;
• applying an input signal to the primary circuit resulting in an output signal;
• and
• using the at least one auxiliary circuit to cancel at least a portion of at least one harmonic of the output signal of the primary circuit.

A method to improve linearity in electrical circuitry, the method comprising:

• providing a primary amplifier circuit;
• providing an auxiliary amplifier circuit, wherein the auxiliary amplifier circuit is substantially functionally identical to the primary amplifier circuit, and further wherein the at least one auxiliary amplifier circuit has a gain that is 1/β3 of a gain of the primary circuit;
• applying a first input signal to the primary amplifier circuit resulting in a first output signal;
• applying a second input signal to the auxiliary amplifier circuit resulting in a second output signal, wherein a ratio of the second input signal to the first input signal is β;
• and
• canceling at least a portion of a third harmonic of the first output signal by subtracting the second output signal from the first output signal.

A method to improve linearity in electrical circuitry, the method comprising:

• providing a primary mixer circuit;
• providing an auxiliary mixer circuit, wherein the auxiliary mixer circuit is substantially functionally identical to the primary mixer circuit;
• applying a first input signal to the primary mixer circuit resulting in a first output signal;
• applying a second input signal to the auxiliary mixer circuit resulting in a second output signal, wherein the second input signal has an amplitude that is different than the first input signal;
• and
• canceling at least a portion of a third harmonic of the first output signal using the second output signal.

A method to improve linearity in electrical circuitry, the method comprising:

• providing an integrated circuit comprising a primary circuit and at least one auxiliary circuit, wherein the at least one auxiliary circuit is substantially functionally identical to the primary circuit;
• applying a first input signal to the primary circuit resulting in a first output signal;
• applying a second input signal to the auxiliary circuit resulting in a second output signal, wherein the second input signal has an amplitude that is different than the first input signal;
• and
• canceling at least a portion of at least one harmonic of the first output signal using the second output signal.

A method to improve linearity in electrical circuitry, the method comprising:

• providing an integrated circuit comprising a primary circuit and at least one auxiliary circuit, wherein the at least one auxiliary circuit is substantially functionally identical to the primary circuit;
• applying an input signal to the primary circuit resulting in an output signal;
• and
• using the at least one auxiliary circuit to cancel at least a portion of at least one harmonic of the output signal of the primary circuit.

A method to improve linearity in electrical circuitry, the method comprising:

• providing an integrated circuit, wherein the integrated circuit comprises a primary amplifier circuit and an auxiliary amplifier circuit, wherein the auxiliary amplifier circuit is substantially functionally identical to the primary amplifier circuit, and further wherein a gain of the auxiliary circuit is 1/β3 a gain of the primary circuit;
• applying a first input signal to the primary amplifier circuit resulting in a first output signal;
• applying a second input signal to the auxiliary amplifier circuit resulting in a second output signal, wherein a ratio of the second input signal to the first input signal is β;
• and
• canceling at least a portion of a third harmonic of the first output signal by subtracting the second output signal from the first output signal.

A method to improve linearity in electrical circuitry, the method comprising:

• providing a primary circuit;
• applying a first input signal to the primary circuit resulting in a first output signal;
• providing multiple auxiliary circuits, wherein each of the multiple auxiliary circuits is substantially functionally identical to the primary circuit;
• applying an auxiliary input signal to each of the multiple auxiliary circuits resulting in auxiliary output signals from each of the multiple auxiliary circuits, wherein each of the auxiliary input signals has an amplitude that is different than the first input signal;
• and
• using the auxiliary output signal from each of the multiple auxiliary circuits to cancel at least a portion of a harmonic of the first output signal of the primary circuit.

A circuit apparatus comprising:

• a primary circuit operable to receive a first input signal and generate a first output signal;
• and
• multiple auxiliary circuits, wherein each of the multiple auxiliary circuits is substantially functionally identical to the primary circuit;
• wherein each of the multiple auxiliary circuits is operable to receive an auxiliary input signal and generate an auxiliary output signal, wherein each of the auxiliary input signals has an amplitude that is different than the first input signal, and further wherein each of the multiple auxiliary circuits is connected to the primary circuit so as to result in cancellation of at least a portion of a harmonic of the first output signal of the primary circuit.