Title :
Effect of antenna on propagation characteristics of electromagnetic waves in tunnel environments
Author :
Huo, Yu ; Xu, Zhao ; Zheng, Hong-dang ; Zhou, Xing
Author_Institution :
Sch. of Inf. & Electr. Eng., China Univ. of Min. & Technol., Xuzhou, China
Abstract :
The optimal radiation pattern and optimal position of the source antenna installed inside a tunnel is the concern of this paper. By comparing theoretical and experimental results, it is shown that the field distribution of the electromagnetic wave in tunnel environments is sensitive to the position of the transmitting antenna in the cross section of a tunnel. And compared with the omni-directional antenna, the utilization of the vertical antenna with radiation pattern of sinn ¿ on the upper middle of the wall, or the horizontal antenna with radiation pattern of sinn ¿ on the middle of the side wall, could represent significant improvement of the standing wave graphics, as well as the propagation attenuation.
Keywords :
antenna radiation patterns; electromagnetic wave propagation; transmitting antennas; tunnels; antenna cross section; antenna optimal position; antenna optimal radiation pattern; antenna propagation characteristics; electromagnetic wave field distribution; electromagnetic wave propagation; omnidirectional antenna; propagation attenuation; standing wave graphics; transmitting antenna; tunnel environment; vertical antenna; Antenna radiation patterns; Antenna theory; Antennas and propagation; Electromagnetic propagation; Electromagnetic scattering; Optical attenuators; Optical propagation; Receiving antennas; Solid modeling; Transmitting antennas;
Conference_Titel :
Microelectronics & Electronics, 2009. PrimeAsia 2009. Asia Pacific Conference on Postgraduate Research in
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-4668-1
Electronic_ISBN :
978-1-4244-4669-8
DOI :
10.1109/PRIMEASIA.2009.5397396
