CMOS RF mixer with digitally enhanced IIP2

(creator_code:org_t)

Institution of Engineering and Technology (IET), 2008
2008
English.
In: Electronics Letters. - : Institution of Engineering and Technology (IET). - 0013-5194 .- 1350-911X. ; 44:2, s. 121-123

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

A new method to enhance the IIP2 of a double-balanced Gilbert cell mixer through digital calibration is presented. The IIP2 calibration method consists of offset voltage cancellation in the switching pairs. The effectiveness of the method has been proven by calibrating a 0.18 mu m CMOS mixer at several combinations of worst-case mismatch conditions and corners. It has been found that the calibrated mixer can achieve its targeted IIP2 specification even at large process, temperature, and power supply variations.

By the author/editor: Rodriguez, Saul; Rusu, Ana; Zheng, Li-Rong; Ismail, Mohammed

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