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ECAD Laboratory
ECAD
Laboratory
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Overview
The Electronics Computer Aided Design (ECAD)
Laboratory was founded in 1994 with the
financial support of the European Community
under the TEMPUS SJEP Project 3038. It is a
Faculty Laboratory and works with all
departments of the Faculty of Electronic
Engineering and Technology.
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Mission
The Laboratory is a National information and
training centre in the fields of Electronics and
Microelectronics design and prototyping, Open
and Distance Learning.
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Main Activities
A substantial amount of scientific research activities,
Integrated Circuits and System design,
undergraduate and Ph.D. students education is
carried out here.
In its activity the laboratory integrates the
experience and knowledge of lecturers, experts and
students from the Technical
University of Sofia as well as from leading scientific
research and manufacturing organisations in the
field of Microelectronics in Bulgaria.
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Main Flow Activities
Digital Design
SYNOPSYS (VHDL)
Analog and Mixed-Signal
Design
CADENCE
Design of ICs
at ECAD Lab
Manufacturing via
EC Foundries
ECAD Lab 
Tests and Verification
at TU - Sofia
http://ecad.tu-sofia.bg
ECAD Laboratory
Cooperation Activities in BG
The Laboratory keeps tight contacts with Bulgarian Microelectronics
companies:
• The Institute of Microelectronics – Development of Design Kit compatible with
IME’s CMOS technology;
• National Science Fund, Ministry of Education and Science – Analysis and Design
of Precise CMOS OpAmps;
• ONS - Bulgaria – Analysis and Design of CMOS ASICs;
• InfoSemiconductor – Analysis and Design of CMOS ASICs;
• Innovative Microsystems – Service, Consultant and other Activities in Electronic
and Microelectronic CAD Systems Applications;
• Melexis – Design, Adjustment and Maintenance of Design Systems;
• Silway Semiconductors - Service, Consultant and other Activities in Electronic and
Microelectronic CAD Systems Applications;
• Raysat – Design of ASICs for Power Supply of GaAs Chips;
• Sonata, DMN Technologies, Facet, Smartcom, etc.
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
International Cooperation Activities
The ECAD Laboratory was the coordinating institution for the
following successfully accomplished Joint European Projects:
•
TEMPUS SJEP 03038-92 – Development of Professionally Accredited
Pilot Modular-Based Degree Course in Electronic Engineering Geared to
Answer the Needs of the Bulgarian Industry;
• TEMPUS JEN 03038-BG-95 - Development of Professionally Accredited
Pilot Modular-Based Degree Course in Electronic Engineering Geared to
Answer the Needs of the Bulgarian Industry;
• TEMPUS Complementary Measured Project 01160-95 – Feasibility Study
for Implementation of Computerised Administration Management System in
Bulgarian Universities;
• INCO COPERNICUS - SYTIC 960170-98 – Promotion of System Design
Training and Information Centres in CCE/NIS.
• REASON – REsearch And Training Action for System On Chip DesigN –
IST – 2000 – 30193.
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
International Cooperation Activities (cont.)
The ECAD Laboratory was the coordinating institution for the
following successfully accomplished Joint European Projects:
Resent Projects:
•
Contract No. Д-002-126/15.12.2008 – “Investigation and Design of
Мicroelectronics Models of Protein Hydrogen Bonding Networks”;
• Contract No. DUNK-01/3/2010 - ”Research Center on innovations and
transfer of knowledge in the field of micro-/nanotechnologies, materials,
energy efficiency and virtual engineering”
• BG051PO001-3.1.07-0048 - “Curriculum update at FETT, FTK and MTF"
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
A Laboratory Class
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
ECAD Laboratory Equipment
The equipment is:
• SUN Fire V240 server – 2
• SUN Enterprise T5240 server
• SUN Blade 100 workstations – 6
• X-terminals SUN Ray 1g - 16
• PCs – Quad core - 10
• peripheral devices - printers, plotters, scanners, etc.
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Computer Network Structure
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
CAD Software
Unique for Bulgaria software is installed and used
successfully for the carrying out of the main activities.
Three of the leading Microelectronics software
packages in the World:
• CADENCE (for functional and layout top-down
design);
• Mentor Graphics (for functional and layout topdown design);
• SYNOPSYS (for functional digital circuit design).
Besides, different software packages like SoftMEMS
Xilinx, Coventor, OrCAD, etc. are also used.
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Design Activities
The main activity of the Laboratory is aimed at the design
of ASICs - CMOS and BiCMOS, with the most up-todate European technologies:
AMS 0.8 m BiCMOS
 AMS 0.35m 3 Metal Si CMOS;
 AMS 0.35m 4 Metal Si CMOS;
 AMS 0.35m 3 Metal SiGe BiCMOS;
 AMS 0.35m 4 Metal SiGe BiCMOS.
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Recently Developed Projects
• 16- and 32-bit multiplier;
• IC for playing digital sound;
• Integrated Circuit for Phase Control of Linearfrequency Power Rectifiers;
• Digital Circuit for PWM Signals;
• CAN controller;
• Precise Dual CMOS Operational Amplifier;
• CADENCE Design kit for the Bulgarian
Microelectronics Industry;
• Analog Transmitting Modules For Wireless
Communications
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Recently Developed Projects
• Design of OFDM Based Wireless Network Modules;
• Design of System for Satellite Identification;
• LIN Protocol Module;
• Development of Baseband and LMP Layers in
Bluetooth for General Purpose In;
• Design, Analysis and Optimization of Monolithic
Inductors for RF Applications;
• Artificial Neural Matrix Of Analog Neurons
Implemented On Standard CMOS Technology;
• A 1Ghz, 10dBm Class E Power Amplifier;
• Monolithic RF Power Class DE Inverter
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Design and Investigation of
Integrated Passive Devices
for RF Circuits
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Inductor Models (Illustration)
Conventional
symmetrical inductor
ECAD Lab 
Symmetrical inductor model
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Inductor Models (Illustration)
Double-layer square spiral
Double-layer square spiral model
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Design and Investigation of RF Power Amplifiers
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Design and Investigation of DC – DC Convertors
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
RF Design
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Model Research Topics
• Elaboration/simplification of a commercial
device model (BSIM, EKV) to better fit
design/research specific tasks.
• Implementation of improved models in a
public math platform (open source
simulator).
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Model Research Topics
CNTFET
Equivalent circuit of
an Carbon Nanotube
Field Effect
Transistors
ECAD Lab 
Carbon nanotube – based
field effect transistor
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Matlab model
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Bioelectronics
Hydrogen Bonding Networks (HBN)
in model system and in proteins
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Retinal
PROTON acceptor and transferor
Outside view
ECAD Lab 
Above view
http://ecad.tu-sofia.bg
ECAD Laboratory
What we do
Stereo-pear
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
The CADENCE Design Framework II
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
The CADENCE Design Framework II
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
The SYNOPSYS Graphical Environment
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
The SYNOPSYS Analysis Tools
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
An Integrated Circuit for Power Electronics
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
A Precise Dual CMOS OpAmp
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
ECAD Lab 
EDUCHIP – an educational VLSI
integrated circuit
http://ecad.tu-sofia.bg
ECAD Laboratory
CAN Controller
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Laboratory Staff
1.
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Prof. Marin Hristov, Ph.D. – Head of the Laboratory
Assoc. Prof. Rossen Radonov, Ph.D. – Technical Manager
Assoc. Prof. George Angelov, Ph.D.
Assist. Prof. Dr. Elitsa Gieva, Eng., M.Sc.
Dimitar Nikolov, Eng., M.Sc. – Ph.D. Student
Atanas Tanev, Eng., M.Sc. – Ph.D. Student
Iavor Georgiev, Eng., M.Sc. – Ph.D. Student
Maria Spasova, Eng., M.Sc. – Ph.D. Student
Nikolai Delibozov, Eng., M.Sc. – Ph.D. Student
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
Laboratory Staff
9. Assoc. Prof. Petar Goranov, Ph.D. – Consultant
10. Assoc. Prof. Emil Manolov, Assoc. Prof. – Consultant
11. Prof. Elisaveta Gadjeva, Assoc. Prof. Ph.D. – Consultant
13. Prof. Mariana Goranova, Ph.D. – Consultant
14. Prof. Slavka Tzanova, Ph.D. – Consultant
ECAD Lab 
http://ecad.tu-sofia.bg
ECAD Laboratory
For Contacts
Prof. Dr. Marin Hristov
Head of the ECAD Laboratory
Rector of the Technical University of Sofia,
Technical University of Sofia
1797 Sofia
BULGARIA
Tel.: +359 2 965 3115
Fax: +359 2 965 2330
E-mail: [email protected]
http://ecad.tu-sofia.bg
ECAD Lab 
http://ecad.tu-sofia.bg