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» Hassan Aboushady » Seminars
Ph.D. Thesis Defense
PhD. Candidate: Ahmed Ahsry
Title: "RF Receiver for Software-Defined Radio based on Bandpass Sigma-Delta Analog-to-Digital Converters".
Date: Friday Jan 13th, 2012, at 10.30am.
Location: Salle des Thèses, Bâtiment ATRIUM, 4, Place Jussieu, 75252 Paris.
Committee in Charge:
| - | Bram Nauta, | Twente University, | The Netherlands, | Reviewer. |
| - | Andreas Kaiser, | ISEN-IEMN, | France, | Reviewer. |
| - | Andreia Cathelin, | STMicroelectronics, | France. |
| - | Dominique Morche, | CEA-LETI, | France. |
| - | Geoffroy Klisnick, | University of Pierre & Marie Curie, | France. |
| - | Aziz Benlarbi-Delai, | University of Pierre & Marie Curie, | France. |
| - | Habib Mehrez, | University of Pierre & Marie Curie, | France. |
| - | Hassan Aboushady, | University of Pierre & Marie Curie, | France. |
Thesis Summary:
The continuous improvement of both speed and density of digital
circuits in CMOS technologies makes it attractive to push most of the
chip functionality from the RF and analog domain to the digital
domain. In an RF receiver, this means to push the Analog-to-Digital
Converter (ADC) near the antenna to achieve what is commonly known as
Software Defined Radio (SDR). In SDR receivers, most of the analog
blocks such as the down-conversion mixer and the channel selection
filter are moved to the digital domain. In this case, most of the
signal processing is done in the flexible and programmable digital
domain. One of the main challenges in implementing an SDR receiver is
the stringent ADC requirements. The ADC must have a large bandwidth
and a high dynamic range to be able to deal with the targeted RF band
in the presence of strong out-of-band blockers. A promising technique
to achieve these ADC specifications is to use a bandpass LC
Sigma-Delta ADC with an RF center frequency.
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