W. Durr et al., LOW-POWER LOW-NOISE ACTIVE MIXERS FOR 5.7 AND 11.2 GHZ USING COMMERCIALLY AVAILABLE SIGE HBT MMIC TECHNOLOGY, Electronics Letters, 34(21), 1998, pp. 1994-1996
The authors demonstrate the application of a commercially available Si
Ge heterojunction bipolar transistor monolithic microwave integrated c
ircuit technology to active mixers in future communication systems at
5.7 GHz and above. This technology can be used to realise circuits wit
h less than 50mW pou er consumption, conversion gains above 15dB and s
mall double sideband noise figures of 3.6 and 9.4dB for 5.7 and 11.2 G
Hz Gilbert cell mixer circuits, respectively.