Title :
Accuracy considerations of the FVTD method for radiating structures
Author :
Baumann, Dirk ; Gimersky, Martin ; Fumeaux, Christophe ; Vahldieck, Rüdiger
Author_Institution :
Lab. for Electromagn. Fields & Microwave Electron., ETH Zurich, Switzerland
Abstract :
The finite-volume time-domain (FVTD) method has been applied successfully to a variety of electromagnetic problems. Since FVTD is relatively new in computational electromagnetics, the achievable dynamic range has not been addressed in previous investigations. In this paper, examples of high-end problems are simulated to demonstrate the capability of the FVTD method to obtain accurate results for complex structures even if a high dynamic range is required. FVTD results for low cross-polarization circular horn antennas are presented and compared to other techniques. To demonstrate the potential of FVTD, a highly complex planar spiral antenna with 26 spiral turns and cavity backing is computed and compared to measurements.
Keywords :
computational electromagnetics; finite volume methods; horn antennas; spiral antennas; FVTD method; accuracy considerations; circular horn antennas; computational electromagnetics; cross-polarization antenna; electromagnetic problems; finite-volume time-domain method; planar spiral antenna; radiating structures; Antenna measurements; Computational electromagnetics; Computational modeling; Dynamic range; Electromagnetic fields; Electromagnetic measurements; Finite difference methods; Horn antennas; Spirals; Time domain analysis;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610113
