IEEE Solid-States Circuits Magazine - Summer 2019 - 90

Prof. Pamarti presenting his talk "Time-Varying Filtering Techniques for RF Front Ends"
at USP.

Archer; the Eldorado Institute; Idea!
and programmable but are not very
Sistemas E letronicos; the Interlinear. Sampled charge domain filteruniversity MicroElectronics Center;
ing is sharp and programmable, but
the Integrated System Laboratory/
the burden of the linearity is on the
USP; the Minister of Science,
front-end voltage-current converter. PamarTechnology, Innovations
These talks covered
ti explained that his
and Communications; and
new state-of-thegroup has developed
Smart Modular Technologies.
art devices, models,
a unique alternative that
Pamarti gave two semand circuit design
purposefully employs
inars. On 10 April 2019, the
and applications,
periodically time-varyday before SEMINATEC
making the event
ing circuit components
kicked off, he presented
of interest to
to realize very sharp, lin"Time-Varying Filtermembers of the
ear, and p r o grammable
ing Techniques for RF
EDS and SSCS
filters for use in RF front
Front Ends." During
communities.
ends., He then presented the
this seminar, Pamarti
techniques and circuits for
provided an overview
implementing such filters.
of the basics of sharp, programPamarti's second talk was schedmable, linear, and integrated filters,
uled during SEMINATEC, on 12 April
which are enabling components for
2019. He talked about low-power
software-defined and cognitive raclocking for energy-conscious Interdio applications. He explained that
net of Things (IoT) systems and covthey are difficult to realize, although
ered important aspects concerning
some implementation techniques
the power consumption of IoT deexist, such as surface acoustic wavevices. He explained that many IoT
and microelectromechanical sysdevices, especially those with very
tem-based filters. These are sharp
stringent energy constraints, operand linear but not very programate in an intermittent manner. The
mable, while active filters can be sharp

SU M M E R 2 0 19

IEEE SOLID-STATE CIRCUITS MAGAZINE

device wakes up infrequently, performs a burst of activity, and goes
back to a sleep/inactive mode. Clocking serves multiple functions in such
devices. Therefore, overall energy
consumption will remain high unless
the clocks themselves consume very
little energy. To address this challenge, he explained that his group
has developed two complementary
approaches: one that enables starting up high-quality crystal oscillators very rapidly and another that
enables the subnanowatt operation
of such oscillators. During his talk,
he presented and discussed the techniques and how they enable lowpower clocking.
A poster session was organized
during SEMINATEC to attract more students and promote discussions about
possible collaborations at the undergraduate, master's, and Ph.D. degree
levels. More than 40 selected technical
papers were presented and discussed
during this time. The four invited DLs
helped review the posters to select
one for a best paper award. During the
SEMINATEC closing session, the best
paper award winner was announced.
The selected best paper was "Magnetoelectrical Transport Improvements of Postgrowth Annealed Iron−
Cobalt Nanocomposites: A Route for
Future Room-Temperature Spintronics," presented by M.V. Puydinger
dos Santos (UNICAMP). A second
paper, "Back Enhanced SOI pMOSFET
Light Sensor," was presented by J.A.
Padovese (USP) and received an honorable mention.
For more details about SEMINATEC
2019, please visit: https://www.ccs
.unicamp.br/seminatec/.

-Wilhelmus A. M. V. Noije
Chapter Chair

-Roberto R. Silva
Student Chapter Chair

https://www.ccs.unicamp.br/seminatec/ https://www.ccs.unicamp.br/seminatec/

IEEE Solid-States Circuits Magazine - Summer 2019

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