Bandtilt correction using combined signal and image passive mixers

A circuit for frequency conversion, comprising:

• first mixer circuitry coupled to a load circuit and having:
• a first mixer configured to generate a first portion of a frequency-converted differential signal to be provided to the load circuit based on first differential input signals and second differential input signals;
• and
• a second mixer configured to generate a second portion of the frequency-converted differential signal based on third differential input signals and fourth differential input signals;
• and
• second mixer circuitry coupled to another load circuit and having:
• a third mixer configured to generate a first portion of another frequency-converted differential signal based on the first differential input signals and the fourth differential input signals;
• and
• a fourth mixer configured to generate a second portion of the other frequency-converted differential signal based on the third differential input signals and the second differential input signals, wherein the load circuit comprises a main load circuit and wherein the other load circuit comprises a dummy load circuit.

A method for frequency conversion, comprising:

• generating, via a first mixer of first mixer circuitry, a first portion of a frequency-converted differential signal based on first differential input signals and second differential input signals;
• generating, via a second mixer of the first mixer circuitry, a second portion of the frequency-converted differential signal based on third differential input signals and fourth differential input signals;
• providing the first portion and the second portion of the frequency-converted differential signal to a load circuit;
• generating, via a third mixer of second mixer circuitry, a first portion of another frequency-converted differential signal based on the first differential input signals and the fourth differential input signals, wherein generating the first portion of the other frequency-converted differential signal comprises generating, via the third mixer, the first portion of the other frequency-converted differential signal based on an inverse of the fourth differential input signals for the second mixer;
• generating, via a fourth mixer of the second mixer circuitry, a second portion of the other frequency-converted differential signal based on the third differential input signals and the second differential input signals, wherein generating the second portion of the other frequency-converted differential signal comprises generating, via the fourth mixer, the second portion of the other frequency-converted differential signal based on an inverse of the second differential input signals for the first mixer;
• and
• providing the first portion and the second portion of the other frequency-converted differential signal to another load circuit.

An apparatus for frequency conversion, comprising:

• means for generating a first portion of a frequency-converted differential signal based on first differential input signals and second differential input signals;
• means for generating a second portion of the frequency-converted differential signal based on third differential input signals and fourth differential input signals;
• means for combining the first portion and the second portion of the frequency-converted differential signal and providing the frequency-converted differential signal to a load circuit;
• means for generating a first portion of another frequency-converted differential signal based on the first differential input signals and the fourth differential input signals, wherein the means for generating the first portion of the other frequency-converted differential signal comprises means for generating the first portion of the other frequency-converted differential signal based on an inverse of the fourth differential input signals;
• means for generating, a second portion of the other frequency-converted differential signal based on the third differential input signals and the second differential input signals, wherein the means for generating the second portion of the other frequency-converted differential signal comprises means for generating the second portion of the other frequency-converted differential signal based on an inverse of the second differential input signals;
• and
• means for combining the first portion and the second portion of the other frequency-converted differential signal and providing the other frequency-converted differential signal to another load circuit.