QUALCOMM Incorporated
Bandtilt correction using combined signal and image passive mixers

Abstract:

Certain aspects provide a circuit for frequency conversion. The circuit includes 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. The circuit also includes 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.