Offset correction for passive mixers

Details Offset correction for passive mixers Offset correction for passive mixers

H - Electricity

03

D

H03D 7/14 (2006.01)

Patent

CA 2698274

A downconversion mixer includes a configurable gate or bulk bias voltage to allow calibration and correction of device offsets. Calibration may be performed on the configurable bias voltages to minimize IM2 distortion in the mixer. The techniques have minimal impact on voltage headroom, impose no requirement for a signal path to be phase-matched with a calibration path, and are particularly well-suited for passive mixers.

L'invention concerne un mélangeur abaisseur comprenant une tension de polarisation de grille ou de substrat configurable pour permettre l'étalonnage et la correction de décalages de dispositif. L'étalonnage peut être effectué sur des tensions de polarisation configurables pour minimiser une déformation d'IM2 dans le mélangeur. Les techniques ont un impact minimal sur la tension de sécurité, n'imposent aucun besoin de trajet de signal à apparier en phase avec un trajet d'étalonnage et sont particulièrement bien adaptées pour des mélangeurs passifs.

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