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CMOS low power baseband chain for a GSM/DECT multistandard receiver

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3 Author(s)
Elwan, H. ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; Ravindran, A. ; Ismail, M.

A CMOS low power baseband chain for an GSM/DECT multistandard receiver is presented. The chain uses a low power class AB digitally controlled filter and variable gain amplifier blocks to provide a low power, DSP controllable design solution. The chain and the building blocks are fabricated using standard N-well CMOS technology. Measurement results indicate that the chain can operate in GSM or DECT mode with a total standby current consumption less than 1.5 mA, while providing a gain control range from -6 dB to 23 dB in 1 dB steps. The chain achieves an input referred noise less than 31 nV/√(Hz) and an out-of-band IIP3 of more than 30 dBm.

Published in:

Circuits, Devices and Systems, IEE Proceedings -  (Volume:149 ,  Issue: 56 )

Date of Publication:

Oct/Dec 2002

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