Title :
Analysis of small antennas in MWD tools using unconditionally stable FDTD method in cylindrical coordinates
Author :
Wu, D. ; Yang, F. ; Chen, J. ; Liu, C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Houston Univ., TX, USA
Abstract :
In this paper, unconditionally stable finite-difference time-domain (FDTD) method in cylindrical system is developed to analyze signal transmission/reception from electrically small antennas under measurement-while-drilling (MWD) environment. Crank-Nicholson scheme is applied in FDTD method to overcome the stability condition imposed by the Courant limit, hence improving the computational efficiency. Numerical examples are used to demonstrate the accuracy and efficiency of the proposed method.
Keywords :
antennas; finite difference time-domain analysis; Courant limit; Crank-Nicholson scheme; finite-difference time-domain; measurement-while-drilling environment; signal reception; signal transmission; small antennas; unconditionally stable FDTD method; Antenna measurements; Computational efficiency; Electric variables measurement; Finite difference methods; Finite wordlength effects; Maxwell equations; Signal analysis; Stability; Time domain analysis; Transmitting antennas;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606173
