FACULTY

Professor: Dr. Andreas Tsigkopoulos, Laboratory Director

Email: atsigo[at]hna[dot]gr

Emeritus Professor: Dr. Michael Fafalios

Email: fafalios[at]hna[dot]gr

SCIENTIFIC STAFF

Laboratory Superintendet: Marialena S. Sklavounou

Email: msklavou[at]hna[dot]gr

MILITARY ACADEMIC STAFF

Commander (Eng) Konstantinos Harisis HN

Email: harisis_kostas[at]hotmail[dot]gr

Commander George Veropoulos HN

Email: g.veropoulos[at]hna[dot]gr

ELECTRONICS LABORATORY COURSES (available only in greek language)

Electronics I (5th semester, 5 hours/week)

• 1a) Electronic Fundamentals
• DC, AC signals
• Fourier series and transform
• dB, dBm definitions
• Transfer function
• P-N junctions, Semiconductor Diodes

• 1b) Analogue Electronic Circuits
• Diode applications
• Rectifiers
• Filters in rectifiers
• Filter types, transfer function characteristics and definitions
• Passive Filters
• Operational Amplifiers
• Active Filters
• Two-port networks, equivalent circuits
• Hybrid parameters

Electronics II (6th semester, 5 hours/week)

• 2a) Analogue Electronics for Telecommunications
• Transistor BJT
• Amplifiers in DC and AC operation
• Feedback and Oscillators
• Thyristors
• JFET and MOSFET Transistor
• Non-linear phenomena, Distortion, Noise
• Modulators and Demodulators

• 2b) Digital Electronic Circuits
• Digital logic
• Boole functions
• Karnaugh maps
• Combinational digital circuits
• Decoders, Adders, Multiplexers, ROM
• Flip-Flops
• Sequential digital circuits

The analytical syllabus of the courses is described in Hellenic Naval Academy Studies Guide.

The teaching material is available only in greek language:

• Electronics Lab Exersices, Evangelia A. Karagianni, Marialena S. Sklavounou, Andreas D. Tsigopoulos, Michael E. Fafalios, HNA Edition, 2014
• Electronic Elements, Evangelia A. Karagianni, Andreas D. Tsigopoulos, Michael E. Fafalios, HNA Edition, 2013
• Telecomunication Electronics, Ε. Κaragianni, HNA Edition, 2014
• Digital Circuits, Α. Tsigopoulos, HNA Edition, 2013

All teaching material for theory and for laboratory is available in electronic form at e-class platform

The Electronic Laboratory aims to provide high quality educational services to Naval Cadets. In this context, besides instruments and materials for research purposes, the Laboratory is equipped with a projector, marker boards, supplies for consumables, storage rooms for non-consumable materials and fourteen (14) workbenches.

Each workbench is equipped with the following instruments:

• 1 Tektronix TDS210 two channel oscilloscope (up to 60 MHz)
• 1 digital oscilloscope 4 channels GDS 1054B GOOD WILL INSTEK
• 1 triple power supply TTi PL320QMT (quad-mode) (32V, 2A)
• 1 triple RITA power supply (AC, DC, 6.3V AC)
• 1 PC
• 1 TTi TG230 sweep / function generator (up to 2MHz)
• 1 function generator AFG-2005 GOOD WILL INSTEK GWIAFG2005
• 1 TTi broadband amplifier WA301 (30V)
• 1 TTi 170S programmable dual display multimeter
• 2 FLUKE 801A, or Global or Keithley (digital output) or Simpson (analog output) or ESCORT EDM-83BS (portable) multimeters
• 2 digital multimeters GDM8245
• 1 TFi TF830 frequency meter (1-3GHz)

• Analogue Filters (Active and Passive, RF-Microwave Filters)
• Electromagnetic waves Attenuation Models
• Electronic Instrumentation and Applications
• Fiber Optics Communication Systems
• Instrumentation and Measurments
• Lasers
• Metamaterials
• Microstrip Antennas
• Microwave Power Amplifiers and Microwave Low Noise Amplifiers in MIC and MMIC technologies
• Millimeter Wave Circuit Design
• Non-Destructive Tests
• Non-linear Dynamic Systems
• Optoelectronic Semiconductor Structures
• Radio Frequency Identification
• Ultra WideBand Applications
• Warfare Electronic Applications
• Wireless Microwave Networks
• Wireless Optical Communications (Over the earth and Underwater)

The role of the Electronics Laboratory includes:

• provision of high quality educational services to Naval Cadets
• provision of advisory and design services on issues Navy issues (such as VLF and LF antennas, ship's electronic systems)
• participation in international scientific developments

In the context of participating in international scientific developments, all members of the Electronics Laboratory contribute a significant number of scientific publications each year. These publications are presented here.

(1) RADAR: "Heterogeneous Three-dimensional Integration using innovative nanotechnologies for the new generation of microwave power transceivers", Τ1ΕΔΚ-00329, Action for Research, Innovation and Innovation "Research - Creation - Innovation", 2014-2020, Operational Program “Competitiveness-Entrepreneurship-Innovation”

Site: https://radar-project.iesl.forth.gr/

The main research activity of the RADAR project is into the new generation of configurable "smart" microwave transceivers by combining nanotechnology with micro/nanoelectronics and pioneering 2D and 3D heterogeneous integration, creating products with increased functionality that extend beyond state-of-the-art technology and innovates in the transceiver market by exploiting one "Unique business window opportunity" for applications from future 5G wireless networks to upcoming radars. The project has three years duration (from May 2018), seven institutions cooperate and the coordinator is the Foundation for Research and Technology (FORTH) of Crete. The Hellenic Naval Academy as a partner has to design and optimize the GaN MMIC circuits, namely the High Power Amplifier (HPA) and the Low Noise Amplifier (LNA). Modeling will be done using electronic design and electromagnetic simulation software such as ADS, HFSS, EMPro and CST to achieve optimization of performance. The design library will be completed in parts through a sufficient number of feedback cycles to design, construct, characterize and compare between computational and experimental data.

(2) FREE SPACE OPTICAL SYSTEM:Τhis project is in collaboration with the Physics Department of the University of Athens – Department of Electronics, Telecommunications, Computers and Automatic Control. The project concerns the installation of a Wireless Optical System FSO between the Hellenic Naval Academy and the Lighthouse of Psyttalia (belonging to the Hellenic Navy). The system has been funded by the Hellenic Navy and it was installed in 2011. The system operates since then uninterruptible and measurements of the capacity (bit rate) and of the bit error rate are continuously taken to be compared with theoretical data of the joint research team between Hellenic Naval Academy and University of Athens. The purpose is to compare the data in order to accurately study the influence of the atmospheric and weather conditions to the system performance and conclude on its optimization with respect to maximum bit rate, fading, outage probability and overall reliability. Ultimate target is the use of such systems for the transmission of real data of the Hellenic Navy because FSO systems offer high security (cannot be intercepted) and cannot be jammed by potential interferers.

(3) EXPERIMENTAL SYSTEM OF THREE AXES MAGNETIC MEASUREMENTS IN A SCALED SHIP: The ships’ static magnetic fields are produced from ferromagnetic materials and include: (a) Permanent magnetism (PM) due to the ship's hull, engines or other large vessel ferromagnetic components and (b) Induced Magnetism (IM) caused by the presence of the ship in the Earth's magnetic field. Given this theoretical background, on a scaled "model" vessel in marine environment, experimental and research work was carried out as follows: (a) Measurement, storage and analysis of permanent and induced magnetic disturbance data and (b) Calculation and indication of the desired current settings in the antimagnetic cable to improve and reduce the magnetic signature of the ship.

1. Ν. Cadet 4th Year, L. Papagiannis, “Transceivers – Implementation at HF frequencies”, 2023 (in progress)
2. Ν. Cadet 4th Year, Α. Doumenis, “Design and implementation of a CNC tool for PCB boards”, 2023 (in progress)
3. Ν. Cadet 4th Year, V. Rogosich, “Design and implementation of a 0 – 15 VDC power supply”, 2023 (in progress)
4. N. Cadet IV, Loizou Dimitrios, “Propagation of EM waves in a medium. Sonar transducer systems”, 2022
5. N. Cadet 4th Year Ch. Goudalas, “Design and construction of the mechanical part of a 3D printer”, 2022
6. N. Cadet 4th Year A.-G. Antoniou, “Design and construction of the electronic part of a 3D printer”, 2022
7. N. Cadet 4th Year G. Kotsoris, “Connection of gyro compass with Data Distribution Unit (DDU)”, 2021
8. N. Cadet 4th Year E. Savva, “Noise Canceling Device”, 2021
9. Ν. Cadet Μiguel Angelo Da Silva Faria Pereira 5th Year of the Portuguese Naval Academy Escola Naval, Depertment of Science and Technology, “User eXperience in augmented reality devices: proposal for systematization of evaluation in maritime border control operations”, 2021
10. N. Cadet IV Vallindras Vasileios, N. Cadet IV Hatzisavva Kleanthis, “3D structures Development for passive and active components on GaN/SiC substrate for X-band Low Noise Amplifiers”, 2021
11. N. Cadet 4th Year G. Zisis, “Construction and design of a mini submarine vehicle”, 2020
12. N. Cadets 4th Year G. Thomas - Z. Gerostathis, “Design and construction of a drone with GPS tracking. Construction of a system with the ability to avoid collisions and the ability to detect movement and target tracking with a built-in camera”, 2020
13. N. Cadet 4th Year V. Socrates, “Construction and design of a mini submarine vehicle”, 2020
14. N. Cadet III Korkoli Christina, “Multilayer Structures Characterization for Covered Layers Detection by Microwave Methods”, 2019
15. Ν. Cadet III Pantazopoulos Ilias, “Design Methods of Innovative Bandpass Filters in Nanotechnology”, 2019
16. N. Cadet (ENG) Konikkos Rafail, “Study, Design and Modeling of Innovative New Generation Transceivers for a wide range of frequencies and applications”, 2019
17. Ν. Cadet IV Papadopoulos Nikolaos, “Amplifiers Design and Optimization (Wideband Millimeter Wave Power Amplifiers)”, 2017
18. Ν. Cadet IV Vardakis Konstantinos, “Tropospheric Effects in Wireless Communications”, 2017
19. Ν. Cadet IV Alifragkis Eleftherios, “Non-Destructive Tests with the Electromagnetic Method”, 2017
20. Ν. Cadet (ENG) IV Zisis Stamatios, “Bandpass Active Filters Design and Implementation and Bandbass Microwave Filters”, 2016
21. Ν. Cadet (ENG) IV Kouzonis Athanasios, “Upper Microwave band – Lower Optics Exploitation in Amplifiers Circuits with the Use of Vacuum Transistor”, 2016
22. Ν. Cadet IV Abushanamp Anas, “Microwave Low Noise Amplifier Design for X-Band Receivers”, 2016
23. Ν. Cadet IV Mitropoulos Athanasios, “The Effect of Specific Whether Phenomena on Sea Condition and on Telecommunications: North Stream and Precipitation Studies”, 2015
24. Ν. Cadet IV Latif Ibrahim, “A Bow-Tie Antenna Design for Ultra-WideBand Telecommunication Applications with the Use of HFSS”, 2015
25. Ν. Cadet IV Kassaras Nikolaos, “Automatic Control Principles with SCR and TRIAC”, 2015
26. Ν. Cadet (ENG) IV K. Panis, «Adaptation of sensors system (luminosity, pressure, temperature) to remote controlled underwater vehicle Hydrobot», 2015
27. Ν. Cadet IV C. Αthanasiou - Anagnostou, «Programming of Arduino microcontroller and accessories – Implementation of prototype circuits to incorporate in an installed data acquisition, processing and graphical representation system of meteo station METEO WEATHERPAK 2000 and GPS in updated frigates type S», 2015
28. Ν. Cadet IV P. Κitsakis, «Microcontroller programming with Raspberry Pi», 2015
29. Ν. Cadet IV Tsigas Dimitrios, “Maximally Flat Low-Pass Filters Design for HF and Microwave Electronic Systems”, 2014
30. Ν. Cadet IV D. Louizos, «Programming of Field Programmable Gate Arrays (FPGAs)», 2014
31. Ν. Cadet IV Ν. Thanos, «Implementation and assembly of lighting system and camera in remotely controlled underwater vehicle (Hydrobot)», 2014
32. Ν. Cadet (ENG) IV Α. Κalomiris, «Arduino Microcontroller programming and implementation of prototype circuits», 2014
33. Ν. Cadet IV D. Εlefsiniotis, «Microcontroller programming with Raspberry Pi and implementation of prototype circuits», 2014