Integrated Circuits and Systems Group (ICSG)

Led by: Sorin Adrian HINTEA
Fields: Math. Comp. Sci. & Software Eng.
Elec. Electron. Sys. & Telecom. Eng.
Institution: Technical University of Cluj-Napoca (UTCN)
Scientists/Total: 4/4
Keywords:  Design of mixed analogue/digital circuits for telecommunication systems Design of analogue circuits with computational intelligence techniques Optoelectronics and optical communications Advanced design techniques of analog and digital integrated circuits

Design of mixed analogue/digital circuits for telecommunication systems
The study and the development of some analog adaptive circuits, aimed for the practical realization of the “software defined radio” concept. The emphasis was the development of some reconfigurable filter architectures with programmable parameters, and their digital control with evolutionary methods.

Design of analogue circuits with computational intelligence techniques
The development and implementation in Matlab of automatic design (sizing) algorithms for some analog modules with optimization methods based on fuzzy logic and genetic algorithms. Performance evaluation was performed by including some pre-designed fuzzy models of the performance functions, or an analog circuit simulator, into the optimization loop.

Optoelectronics and optical communications
The modelling and simulation of LMA fibres, rare earth doped fibres, some optical amplifiers, bending effects, multimode propagation, polarization effect and non-linear effects at transmission through optical fibres.

Advanced design techniques of analog and digital integrated circuits
The design of complex electronic circuit structures under the Mentor Graphics design environment: reconfigurable circuits with applications in auditory prosthesis, transmission of the biomedical parameters over an electromagnetic link, radiofrequency receptors, low-power integrated circuits.


- Mentor Graphics IC Nanometer Design package which includes all the instruments necessary for the design and
simulation of some integrated VLSI circuits in CMOS and BiCMOS technologies (ICStudio, Design Architect, Eldo,
ICStation, ModelSim and technological data of a 90 nm BiCMOS fabrication process).
- FPGA development boards, Digilent Basys boards, Digilent Nexys boards, Xilinx V2-Pro development board
- Software resources: Xilinx ISE 8.2, Xilinx EDK 8.2, Chipscope Pro 8.2, Xilinx University Program nr. 5310-XUP-48961
from 4/10/2006, Modelsim XE III 6.1
- Digilab D2E-DIO1 development board, fabricated by Digilent Inc., on a Spartan IIE XC2S200E FPGA; Digilab Spartan
3 development boards, fabricated by Digilent Inc, on a Spartan 3, XC3S200 FPGA; analog reconfigurable circuit
boards: ispPAC10 - ispPAC30 development boards
- Measurement and test stands built with: digital oscilloscope with PC interface, variable signal generator, stabilized
supply voltage sources, RLC measurement points, spectral analyser, characteristics plotter, digital multimeter, PC


Research & development in core areas
Development of adaptive filter theory, with applications in the processing of non-stationary signals by non-linear systems
Extensions of the classical feedback theory, with applications in the stability analysis

Research & development in applied fields
Analysis and design of electronic systems and circuits using advanced modelling and optimization methods
Adaptive filters for signal processing and system analysis, with applications in acoustics
Electronic systems and circuits for harvesting power from un-conventional energy sources

Analysis and design of analog, RF and mixed-signal integrated circuits
Analysis and design of digital systems, including FPGA and/or ASIC implementation
Top-level verification of digital systems using SystemVerilog and SystemC
Analysis and design of electro-acoustic systems – echo cancellation, reverberation control, signal separation, etc.

Applied engineering services
Building digital models for complex electronic and acoustic systems
Design and physical implementation of low-power modules for harvesting energy from un-conventional energy sources
Measurement of acoustic properties of a room and building detailed digital models
Modelling the human audiograms for optimization of hearing aids

Design of analog, RF and mixed-signal integrated circuits using the industry-standard software package Virtuoso – Cadence: Schematic Editor, ADE, Layout Editor, Assura


Str. G. Baritiu Nr. 26-28, 400027
Cluj-Napoca, jud. Cluj, România
Tel: +40 264 401227
Fax: +40 264 591340




0 Patents or Software


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