An 80 GHz SiGe Quadrature Receiver Frontend
- 1 November 2006
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 15508781,p. 197-200
- https://doi.org/10.1109/csics.2006.319962
Abstract
An in-phase/quadrature (I/Q) receiver frontend for communication and sensing (e.g. radar) applications in the frequency range between 75 and 86 GHz is presented. The frontend includes a low-noise amplifier (LNA), two down-conversion Gilbert mixers, a branchline coupler for the generation of the in-phase and quadrature LO signals, and LO buffers. The circuit was designed and fabricated in a 200 GHz fT SiGe:C bipolar technology. The chip performance was characterized by on-wafer measurements. From 75 GHz to 86 GHz, the frontend exhibits a single sideband noise figure of 11 dB, and a conversion gain that is higher than 28 dB. The input-referred compression point is -16 dBm. The chip occupies an area of 1000mum times 1100mum. The circuit works from a positive supply voltage of 5.5 V and draws 195 mAKeywords
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