Abstract
The frequency response of SiGe HBT active mixers
based on the Gilbert cell topology is analyzed theoretically. The
time-varying operation of the Gilbert cell mixer is taken into
account by applying conversion matrix analysis. The main bandwidth
limiting mechanisms experienced in SiGe HBT Gilbert cell
mixers performing frequency conversion of ultra-wideband signals
is discussed. The analysis is verified by computer simulations
using a realistic high-frequency large-signal SiGe HBT model.
Design optimization steps towards ultra-wideband operation for
Gilbert cell mixers is discussed.
| Original language | English |
|---|---|
| Title of host publication | Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop |
| Publication date | 2004 |
| Publication status | Published - 2004 |