A Multipath Technique for Cancelling Harmonics and Sidebands in a Wideband Power Upconverter
- Shrestha, R.
- Mensink, E.
- Klumperink, Eric A.M.
- Wienk, Gerhardus J.M.
- Nauta, Bram
Publication date
February 2006
DOI Publisher
Institute of Electrical and Electronics Engineers (IEEE)Abstract
Switching mixers are power-efficient but produce unwanted harmonics and sidebands. A multipath technique to clean up the spectrum using digital circuits and mixers, but no filters, is applied to a 0.13µm CMOS power upconverter. The circuit delivers 8mW from dc to 2.4GHz with 11% drain efficiency, with spurs <-40dBc over more than 4 octaves in frequency, and consumes 228mW from a 1.2V supply
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