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This proceedings contains the papers presented at the 9th
International Symposium on Catalyst Deactivation, held in
Lexington, KY, USA, on 7-10 October 2001.
Analog Test Signal Generation Using Periodic SigmaDelta-Encoded
Data Streams presents a new method to generate high quality analog
signals with low hardware complexity. The theory of periodic
SigmaDelta-encoded bitstreams is presented along with a set of
empirical tables to help select the appropriate parameters of a
bitstream. An optimization procedure is also outlined to help
select a bit sequence with the desired attributes. A large variety
of signals can be generated using this approach. Silicon
implementation issues are discussed with a specific emphasis on
area overhead and ease of design. One FPGA circuit and three
different silicon implementations are presented along with
experimental results. It is shown that simple designs are capable
of generating very high precision signals-on-chip. The technique is
further extended to multi-bit signal generation where it is shown
how to increase the performance of arbitrary waveform, generators
commonly found in past and present-day mixed-signal testers. No
hardware modifications are required, only the numbers in memory are
changed. Three different calibration techniques to reduce the
effects of the AWG's non-linearities are also introduced, together
with supporting experimental evidence. The main focus of this text
is to describe an area-efficient technique for analog signal
generation using SigmaDelta-encoded data stream. The main
characteristics of the technique are: High quality signals (SFDR of
110 dB observed); Large variety of signals generated; Bitstreams
easily obtained with a fast optimization program; Good frequency
resolution, compatible with coherent sampling; Simple and fast
hardware implementation; Mostly digital, except an easily testable
1-bit DAC and possibly a reconstruction filter; Memory already
available on-chip can be reused, reducing area overhead; Designs
can be incorporated into existing CAD tools; High frequency
generation.
Focused on the undergraduate audience, Chemical Reaction
Engineering provides students with complete coverage of the
fundamentals, including in-depth coverage of chemical kinetics. By
introducing heterogeneous chemistry early in the book, the text
gives students the knowledge they need to solve real chemistry and
industrial problems. An emphasis on problem-solving and numerical
techniques ensures students learn and practice the skills they will
need later on, whether for industry or graduate work.
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