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Conference paper

Conversion Matrix Analysis of SiGe HBT Gilbert Cell Mixers

In Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop — 2004

By Johansen, Tom Keinicke1,2; Vidkjær, Jens1,2; Krozer, Viktor1,2

From

Electromagnetic Systems, Department of Electrical Engineering, Technical University of Denmark1

Department of Electrical Engineering, Technical University of Denmark2

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.

Language: English
Year: 2004
Proceedings: Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop
Types: Conference paper
ORCIDs: Johansen, Tom Keinicke
Keywords

nonlinear analysis, microwave mixers, SiGe MMIC

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Analysis