Zobrazeno 1 - 10
of 168
pro vyhledávání: '"M, Mazanek"'
Publikováno v:
Radioengineering, Vol 27, Iss 3, Pp 640-645 (2018)
A novel approach to the evaluation of electromagnetic fields radiated from electronic devices by using a small shielded box is presented. Several EMC problems can be identified by employing the computations of a Radiated Model device, such as the mod
Externí odkaz:
https://doaj.org/article/56e0400568624337a4a9a1cf0ffb82c8
Publikováno v:
Radioengineering, Vol 21, Iss 4, Pp 1060-1066 (2012)
Specific utilization of a microwave radiometer for online monitoring, detection and, especially, prediction of particular dynamic atmospheric effects such as precipitation and cloudiness is proposed in the paper. The ground-based microwave radiometer
Externí odkaz:
https://doaj.org/article/1b3853beeb7a4899a9149847bb6d4f4d
Publikováno v:
Radioengineering, Vol 21, Iss 1, Pp 464-470 (2012)
This paper brings a brief overview of the statistical method called Principal Component Analysis (PCA). It is used for clutter reduction in detection of hidden objects, targets hidden behind walls, buried landmines, etc. Since the measured data, imag
Externí odkaz:
https://doaj.org/article/48c44f7cb9224661b0ba3b91abc6310a
Autor:
M. Mazanek, J. Kracek
Publikováno v:
Radioengineering, Vol 20, Iss 2, Pp 457-463 (2011)
The wireless power supply is motivated by simple and comfortable use of many small electric appliances with low power input. This paper reviews the concepts which are suitable for wireless power transmission with respect to power supply of such appli
Externí odkaz:
https://doaj.org/article/912299d532a940cd9137401c3a890f07
Publikováno v:
Radioengineering, Vol 16, Iss 3, Pp 37-41 (2007)
Paper focuses on so-called L-probe feeding technique suitable for wideband (30% relative bandwidth) driving of microstrip patch antennas. Physical explanation, simulation and measurement are presented. Further modification for improvement of radiatio
Externí odkaz:
https://doaj.org/article/1df6ab2201774c20bca5bd2d3d300a39
Autor:
M. Mazanek, P. Cerny
Publikováno v:
Radioengineering, Vol 16, Iss 2, Pp 9-14 (2007)
In case of particular ultra wideband applications (i.e. radar, positioning, etc.), it is crucial to know the transient responses of antennas. In the first part of the paper, the optimization process searches for the dipole shape that accomplishes two
Externí odkaz:
https://doaj.org/article/ca80e52c09684f29baa7c65199a44c2f
Publikováno v:
Radioengineering, Vol 15, Iss 4, Pp 34-37 (2006)
Small shielded boxes are nowadays widely used for measurement of EMS, EMI and sensitivity properties of different devices. This paper deals with an improvement of commercial small shielded box parameters for a measurement of sensitivity of small mobi
Externí odkaz:
https://doaj.org/article/85d2b8c4901b486ba91f7bcdd5aff1e8
Autor:
M. Mazanek, P. Piksa
Publikováno v:
Radioengineering, Vol 15, Iss 3, Pp 15-19 (2006)
This paper describes a design of the Self- Complementary Spiral Antenna (SCSA) which consists of a spiral antenna and a wideband impedance transformer. The spiral antenna and the transformer are designed separately due to computing demands. New knowl
Externí odkaz:
https://doaj.org/article/4f9b14aa7910457199f8464bf04499f7
Autor:
M. Mazanek, P. Hazdra
Publikováno v:
Radioengineering, Vol 15, Iss 2, Pp 18-21 (2006)
An L-System (Lindenmayer system) is a scheme primarily developed in the area of the computer science for simulating the development of biological structures. It has also been found very useful for generating the geometry of various fractal antennas.
Externí odkaz:
https://doaj.org/article/c019374bc2a2434a9a26b96980f82e10
Publikováno v:
Radioengineering, Vol 9, Iss 1, Pp 21-26 (2000)
Anechoic and EMC chamber at the CTU in Prague was designed and used fora variety of antenna measurements and EMI testing. Due to differentmeasurement methods (near field, far field, compact range, and EMImeasurement) applied in the laboratory, differ
Externí odkaz:
https://doaj.org/article/f874ddc64a714f82b11d09bfa72d5224