O
Oscar De Feo
- Jan 1, 1970
- 0
PhD Position in "Modelling & Design of Injection-Locked Frequency
Dividers (ILFD)"
A three year PhD position in Microelectronic Engineering is available
at the University College Cork, starting in October 2006.
For this project we look for an outstanding PhD student able to
undertake the challenge of an advanced mathematical modelling whose
results will have straightforward implications in modern
telecommunications.
PROJECT DESCRIPTION
___________________
Core elements of modern mobile communication devices are the frequency
synthesisers, which set and control the communication frequency. Given
the high frequencies at which modern wireless communication take place,
they are also the critical component for the power budget of portable
communications devices, determining, almost by themselves, the battery
lifetime.
Nowadays, injection-locked frequency dividers (ILFD) offer great
hope for lowering the power consumption of frequency synthesizers.
However, due to an incomplete theory, ILFD are currently designed using
a combination of heuristics and extensive simulations, preventing their
widespread use. In particular, key problem for designers is to
determine a priori the range of frequencies (locking range) over which
the ILFD will operate.
In this project, the methodological design of ILFD will be
addressed resorting to the nonlinear mathematical modelling of the
basic circuitry, leading to better designs and ultimately longer
battery lives for portable wireless systems.
Starting from simple models of the ILFD circuitry, the candidate will
combine analytical and numerical nonlinear bifurcation analysis to
investigate the externally induced singularities, which may a priori
justify the frequency locking ranges.
Afterwards, by combining normal form theory and averaging
techniques, the candidate will extrapolate a priori rules for
predicting the structural stability limits of the circuit parameters
(components values), i.e. the maximal parameter drift under which the
behaviour of the circuitry remains compatible with the required one.
Finally, in order to seriously ground the theoretical results in
the experimental evidence, the candidate will address the design of an
experimental setup in order to compare the theoretical predictions with
the experimental results.
WE REQUIRE
__________
The ideal candidate has an MSc in electrical and/or automatic
control engineering, applied mathematics, or physics, with basic
knowledge in nonlinear dynamics. Knowledge in computational methods for
dynamical system analysis would be an asset.
We expect the candidate to work on the aforesaid project mostly
independently, however under the regular supervision of a Lecturer.
WE OFFER
________
An excellent working environment, within an exciting team at the
core of the best Irish University of the last three years.
To achieve the PhD title working on a challenging mathematical
modelling problem, with real implications in modern telecommunications,
and interacting with industry.
To be formed, among other things, in applied analysis of nonlinear
dynamical systems, one of the hottest topics in mathematical
engineering.
A competitive PhD fellowship of 16,000 € p.a., tax and PhD
registration fees exempt.
TO APPLY
________
Applications that are complete by June 1st, 2006, will be given
full consideration, although the search will continue until the
position is filled. Forecasted starting date: October 1, 2006.
The applicants should send a motivation letter, a CV, including the
list of publications, and the contacts of 3 reference persons to Dr.
Oscar De Feo, e-mail: [email protected].
Dividers (ILFD)"
A three year PhD position in Microelectronic Engineering is available
at the University College Cork, starting in October 2006.
For this project we look for an outstanding PhD student able to
undertake the challenge of an advanced mathematical modelling whose
results will have straightforward implications in modern
telecommunications.
PROJECT DESCRIPTION
___________________
Core elements of modern mobile communication devices are the frequency
synthesisers, which set and control the communication frequency. Given
the high frequencies at which modern wireless communication take place,
they are also the critical component for the power budget of portable
communications devices, determining, almost by themselves, the battery
lifetime.
Nowadays, injection-locked frequency dividers (ILFD) offer great
hope for lowering the power consumption of frequency synthesizers.
However, due to an incomplete theory, ILFD are currently designed using
a combination of heuristics and extensive simulations, preventing their
widespread use. In particular, key problem for designers is to
determine a priori the range of frequencies (locking range) over which
the ILFD will operate.
In this project, the methodological design of ILFD will be
addressed resorting to the nonlinear mathematical modelling of the
basic circuitry, leading to better designs and ultimately longer
battery lives for portable wireless systems.
Starting from simple models of the ILFD circuitry, the candidate will
combine analytical and numerical nonlinear bifurcation analysis to
investigate the externally induced singularities, which may a priori
justify the frequency locking ranges.
Afterwards, by combining normal form theory and averaging
techniques, the candidate will extrapolate a priori rules for
predicting the structural stability limits of the circuit parameters
(components values), i.e. the maximal parameter drift under which the
behaviour of the circuitry remains compatible with the required one.
Finally, in order to seriously ground the theoretical results in
the experimental evidence, the candidate will address the design of an
experimental setup in order to compare the theoretical predictions with
the experimental results.
WE REQUIRE
__________
The ideal candidate has an MSc in electrical and/or automatic
control engineering, applied mathematics, or physics, with basic
knowledge in nonlinear dynamics. Knowledge in computational methods for
dynamical system analysis would be an asset.
We expect the candidate to work on the aforesaid project mostly
independently, however under the regular supervision of a Lecturer.
WE OFFER
________
An excellent working environment, within an exciting team at the
core of the best Irish University of the last three years.
To achieve the PhD title working on a challenging mathematical
modelling problem, with real implications in modern telecommunications,
and interacting with industry.
To be formed, among other things, in applied analysis of nonlinear
dynamical systems, one of the hottest topics in mathematical
engineering.
A competitive PhD fellowship of 16,000 € p.a., tax and PhD
registration fees exempt.
TO APPLY
________
Applications that are complete by June 1st, 2006, will be given
full consideration, although the search will continue until the
position is filled. Forecasted starting date: October 1, 2006.
The applicants should send a motivation letter, a CV, including the
list of publications, and the contacts of 3 reference persons to Dr.
Oscar De Feo, e-mail: [email protected].
