Regular meeting of enthusiasts of microwave technology
Biological systems, from individual biomolecules to entire organisms, naturally generate electrical and electromagnetic signals. The first part of the lecture will focus on the frequency bands in which this activity has already been thoroughly explored, and on those where current knowledge is still limited. Special attention will be given to the visible spectrum, in which practically all organisms emit weak but measurable chemiluminescent signals. An overview will be provided on the use of intense pulsed electric fields (PEF) in biological systems.
In today’s society, which is increasingly focused on sustainability and environmental protection, it is essential to thoroughly analyze and assess the ecological footprint of various sectors, including transportation. Personal automobiles represent a significant source of environmental burden, with their ecological footprint encompassing not only greenhouse gas (GHG) emissions during operation but also the environmental impacts associated with their production, maintenance, and disposal. Determining the ecological footprint of vehicles is a key tool for evaluating the environmental impacts of automotive transport.
The current state of energy demand fulfillment is unsustainable; therefore, global organizations and companies are striving to prepare for the necessary transformation of energy sources. Over the past decade, the cost of producing photovoltaic solar cells has significantly decreased while their efficiency has considerably increased, making this type of module dominant in the market. Photovoltaics is thus becoming a very important source of electrical energy. As a result, the number of installed photovoltaic power plants worldwide—and in recent years also in the Czech Republic—is growing exponentially.
Fuel cells are systems that convert the chemical energy of electroactive materials directly into electric current. Theoretically, cells can operate indefinitely because the electrodes do not participate in the chemical reaction. The function of the electrodes in the electrochemical reaction of these systems is purely catalytic, which is the main difference compared to primary and secondary sources. The basic principles of the most significant and promising types of fuel cells will be described.
Another lecture will address the field of 3D printing and its use in the design and production of antenna lenses with spatial distribution of effective permittivity, which are based on so-called artificial materials. During the lecture, the advantages and disadvantages of this approach compared to conventional implementation methods will be discussed. Applications of these lenses will be demonstrated for improving the parameters of chipless identification tags in passive indoor localization, and for lens antennas with wide-angle beam steering capability in the millimeter wave band up to 110 GHz.
The differences between surveillance and meteorological radars will be described, the radar equation in meteorology will be derived, and it will be explained how the effective radar cross-section of meteorological targets is calculated and which quantities are used in radar meteorology, including their transformation into frequency-independent quantities. Subsequently, specific radar measurements by IAP radars located at the Milešovka meteorological observatory (837 m) will be described. These operate in the X-band (9.5 GHz) and the Ka-band (in our case, 35 GHz).
With the rise of electromobility and battery storage systems, the issue of accurate and fast evaluation of the current state and lifetime prediction of battery cells is gaining prominence. One way to obtain detailed information about processes inside the battery is Electrochemical Impedance Spectroscopy (EIS). Compared to conventional methods, its main advantages include speed and the amount of information it provides—for example, in comparison with capacity testing and internal resistance measurements.
Take advantage of this exceptional opportunity to meet with colleagues working in the field, establish, renew, or deepen personal or professional connections. We look forward to meeting you and cordially invite you to attend the seminar with an accompanying exhibition of products from companies operating in the field of high-frequency and microwave technology.
Date and Time
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- Date: 14 May 2025
- Time: 06:00 AM UTC to 06:00 PM UTC
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Agenda
8:00 – 9:00 Registration
9:00 – 9:10 Opening of the seminar
9:10 – 10:10 Biological Systems as Sources and Sensors of Electromagnetic Fields – I – Ing. Michal Cifra, Ph.D. (Institute of Photonics and Electronics, Czech Academy of Sciences, Prague)
10:10 – 10:30 Break
10:30 – 11:30 Biological Systems as Sources and Sensors of Electromagnetic Fields – II – Ing. Michal Cifra, Ph.D. (Institute of Photonics and Electronics, Czech Academy of Sciences, Prague)
11:30 – 12:30 The Issue of Determining the Ecological Footprint of Vehicles – Ing. Kamil Jaššo, Ph.D. (Department of Electrotechnology, FEEC, Brno University of Technology)
12:30 – 12:50 Company Presentations
12:50 – 14:00 Break
14:00 – 14:30 The State of Photovoltaics in the World and in the Czech Republic – Ing. Petr Maule, MBA, Assoc. Prof. Ing. Jiří Vaněk, Ph.D. (Czech Photovoltaic Association, Department of Electrotechnology, FEEC, Brno University of Technology)
14:30 – 15:00 Fuel Cells – Classification, Principles, and Properties – Assoc. Prof. Ing. Vítězslav Novák, Ph.D. (Department of Electrotechnology, FEEC, Brno University of Technology)
15:00 – 15:30 3D-Printed Lenses for Millimeter-Wave Applications – Ing. Petr Kaděra, Ph.D., Assoc. Prof. Ing. Jaroslav Láčík, Ph.D. (Department of Radio Electronics, Brno University of Technology)
15:30 – 16:00 Microwave Radars in Meteorology – Assoc. Prof. Ing. Ondřej Fišer, CSc., Assoc. Prof. RNDr. Zbyněk Sokol, CSc. (Institute of Atmospheric Physics, Czech Academy of Sciences, Prague)
16:00 – 16:15 Break
16:15 – 16:45 Electrochemical Impedance Spectroscopy as a Universal Tool for the Analysis of Battery Cells and Modules – Ing. Kateřina Nováková (Department of Electrotechnology, Faculty of Electrical Engineering, CTU in Prague)
16:45 – 20:00 Discussion Evening at the Engineers' Club