Wyniki wyszukiwania - BazTech

1

Design and Characterization of Periodically Conductive Woven Fabric

Guan Fuwang, Li Zhaole, Yang Zhuli, Zhang Chuyang, Qiu Yiping

Autex Research Journal

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2019

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Vol. 19, no. 3

236--242

EN

In this paper, a novel kind of electromagnetic (EM) functional textiles is proposed, which show high-pass characteristics as they interact with EM waves. The periodically conductive woven fabric was designed, fabricated, and measured. Specifically, by means of unit cell model building and EM simulation, the theoretical S21 (transmission coefficient) and S11 (reflection coefficient) curves were obtained. A concrete sample was fabricated through weaving process, and its transmission characteristics were measured in the microwave anechoic chamber. The measured and simulated results were highly consistent, demonstrating the validity of design process. Compared with the aluminum foil paper sample, the S21 values of fabricated sample were a little smaller, and the reason could be attributed to yarn crimp and surface roughness. The EM characteristics of fabricated sample under two different polarization modes were slightly different, which was due to the beating-up tension of weaving process. The work could offer new research ideas, and the related products have potential advantages over rigid plates on the account of textile characteristics.

2

RFID Transponder operating at 13.56 MHz

Rütschlin M.

Elektronika : konstrukcje, technologie, zastosowania

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2016

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Vol. 57, nr 5

5--6

EN

The application example of an RF-ID demonstrates the ability of CST MICROWAVE STUDIO to simulate antenna structures in a low frequency band helping to understand and describe the characteristics of the device without heavy prototyping.

PL

Przykład analizy układu znacznika RFID pokazujący przydatność CST MICROWAVE STUDIO do symulacji anten pracujących w niskim paśmie częstotliwości. Symulacja pomaga zrozumieć działanie i wyznaczyć charakterystyki urządzenia jeszcze przed wykonaniem prototypu.

3

Optymalizacja czasu obliczeń symulacji elektromagnetycznych prowadzonych metodą FDTD

Sypniewski M., Celuch M.

Elektronika : konstrukcje, technologie, zastosowania

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2015

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Vol. 56, nr 7

30-34

PL

W artykule przedstawiona jest dyskusja dotycząca optymalnego wyboru sprzętu komputerowego do celów prowadzenia symulacji elektromagnetycznych metodą FDTD oraz optymalizacji kodów symulatora pod względem jak najlepszego wykorzystania dostępnych systemów komputerowych. Omówiono tu tendencje światowe w badaniach nad tymi problemami oraz pokazano rozwiązania praktyczne, wprowadzone przez autorów do kodów symulatorów QW-3D oraz QW-V2D.

EN

The paper presents a discussion concerning optimal choice of computer hardware with respect to its application to electromagnetic simulations using the FDTD method as well as optimization of FDTD codes to obtain their best performance with particular hardware available. Tendencies in the worldwide research on those problems are outlined. Specific practical solutions applied by the authors in the QW-3D and QW-V2D simulators are also presented.

4

FDTD modeling and experimental verification of electromagnetic power dissipated in domestic microwave ovens

Kopyt P., Celuch-Marcysiak M.

Journal of Telecommunications and Information Technology

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2003

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nr 1

59-65

EN

The FDTD (Finite Difference Time Domain) method has proven to be effective in modeling high-frequency electromagnetic problems in telecommunications industry. Recently it has been successfully applied in microwave power engineering. In order to accurately model scenarios typical in this field one has to deal with the movement of objects placed inside cavities. This paper describes a simple algorithm that makes it possible to take into account object rotation - important in simulations of domestic microwave ovens. Results of example simulations are presented and an experimental verification of the simulation tool is performed.