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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Malla, P. Lakdawala, H. Kornegay, K. Soumyanath, K. |
| Copyright Year | 2008 |
| Description | Author affiliation: Cornell Univ., Ithaca, NY (Malla, P.; Lakdawala, H.) |
| Abstract | A reconfigurable power-adaptive DT DeltaSigma ADC for intelligent 802.11n/WiMAX receivers (20 to 2.5MHz per I/Q) is presented. The intent is to replace complex analog baseband circuits with a combination of tunable one-pole filter, anti-alias filter and coarse VGA in Paramesh, J. et al (2006). Blocker filtering, fine variable-gain amplification and variable-BW channel selection are moved to the digital baseband. The SNR is optimized as a function of signal and out-of-band blocker power in Behbahani, F. et al, (2001) by reconfiguring the modulator order into one of 4 modes at constant fs, thereby keeping anti-aliasing unchanged. A 5b flash ADC integrated in the converter is the front end of a simple spectrum analyzer (SSA). Spectrum sensing and reconfigurability are accomplished without compromising ADC performance. |
| Starting Page | 496 |
| Ending Page | 631 |
| File Size | 756390 |
| Page Count | 136 |
| File Format | |
| ISBN | 9781424420100 |
| ISSN | 01936530 |
| DOI | 10.1109/ISSCC.2008.4523274 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-02-03 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | WiMAX Capacitors Sampling methods Feedback Circuits Signal processing CMOS process Wireless LAN Clocks Added delay |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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