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Software Assisted Digital RF Processor (DRP™) for Single-Chip GSM Radio in 90 nm CMOS

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8 Author(s)
Staszewski, R. ; Texas Instrum. Inc., Dallas, TX, USA ; Staszewski, R.B. ; Jung, T. ; Murphy, T.
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This paper proposes and describes a new software and application programming interface view of an RF transceiver. It demonstrates benefits of using highly programmable digital control logic in an RF wireless system realized in a digital nanoscale CMOS process technology. It also describes a microprocessor architecture design in Digital RF Processor (DRPTM) and how it controls calibration and compensation for process, temperature and voltage variations of the analog and RF circuits to meet the required RF performance. A few calibration examples to reduce a DCO bias current and improve device reliability, as well as to optimize transmit modulation and receive performance, are given. The presented circuits and techniques have enabled successful implementation of a commercial single-chip GSM radio in 90 nm CMOS.

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Solid-State Circuits, IEEE Journal of  (Volume:45 ,  Issue: 2 )