Realisation of a SiGe-HBT direct down conversion receiver for UMTS base stations

In this work, the realisation of a direct down conversion receiver for the application in UMTS base stations is presented The analogue receiver functionality is completely integrated, based on a SiGe-HBT process with a transit frequency f/sub T/=50 GHz and a minimum noise figure F/sub min/=1 dB. It...

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Bibliographic Details
Main Authors: Bitzer, T., Karthaus, U., Pascht, A., Weese, K.
Format: Conference Proceeding
Language:English
Subjects:
3G mobile communication
Application specific integrated circuits
Band pass filters
Bandwidth
Base stations
Error compensation
Frequency conversion
Image converters
Noise figure
Process design
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Summary:In this work, the realisation of a direct down conversion receiver for the application in UMTS base stations is presented The analogue receiver functionality is completely integrated, based on a SiGe-HBT process with a transit frequency f/sub T/=50 GHz and a minimum noise figure F/sub min/=1 dB. It is designed to convert four neighbouring W-CDMA frequency channels of 3.84 MHz bandwidth simultaneously to the base band. The final carrier separation is done after the AD-conversion in the digital domain. Due to the requirements concerning image suppression, a low IQ imbalance in the analogue receiver part and an error compensation in the digital domain are essential. The receiver features a noise figure NF
DOI:10.1109/EDMO.2002.1174935