Adaptive analog IF signal processor for a wide-band CMOS wireless receiver

Adaptive analog IF signal processor for a wide-band CMOS wireless receiver

An IF strip for a wireless receiver supports a variable baud rate by changing analog filter bandwidth. Sliding and step adaptive dynamic range are both used at IF to dissipate only the necessary power at prevailing channel conditions. A combination of VGA and PGA is developed for 64-QAM. The total s...

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Veröffentlicht in:IEEE journal of solid-state circuits 2001-08, Vol.36 (8), p.1205-1217
Hauptverfasser: Behbahani, F., Karimi-Sanjaani, A., Wee-Guan Tan, Roithmeier, A., Leete, J.C., Hoshino, K., Abidi, A.A.
Format: Artikel
Sprache:eng
Schlagworte:
Band pass filters
Bandwidth
Channels
Circuits
CMOS
CMOS process
Dissipation
Dynamic range
Energy consumption
Finite impulse response filter
Intermediate frequency
Microprocessors
Receivers
Signal processing
Strips
Wideband
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Beschreibung
Zusammenfassung:An IF strip for a wireless receiver supports a variable baud rate by changing analog filter bandwidth. Sliding and step adaptive dynamic range are both used at IF to dissipate only the necessary power at prevailing channel conditions. A combination of VGA and PGA is developed for 64-QAM. The total signal processor draws an average of 16 mA from 3.3 V and a peak of 73 mA. The differential input noise is as low as 3.9 nV//spl radic/Hz, while maximum IIP3 is +22 dBm with respect to 100 ohms.
ISSN:0018-9200
1558-173X
DOI:10.1109/4.938371