A wideband IM3 cancellation technique for CMOS attenuators
- Cheng, W.
- Oude Alink, M.S.
- Annema, Anne J.
- Wienk, Gerhardus J.M.
- Nauta, Bram
Publication date
February 2012
DOI Publisher
Institute of Electrical and Electronics Engineers (IEEE)Abstract
A highly linear P attenuator system using a wideband IM3 cancellation technique is presented that provides 4 discrete attenuation levels with 6dB spacing for DC-5GHz. For the whole band, S11<-14dB, attenuation flatness<1.6dB, +10dBm input P1dB and +26dBm IIP3 are achieved. For the TV band (0.1Gz-1.2GHz) +30dBm IIP3 is achieved. The active area is 0.0054mm2 in a standard 0.16um bulk CMOS process
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