Title :
Leaky characteristics of modified suspended substrate microstrip line with multilayer dielectric structure
Author :
Zhou, En ; Xu, Shanjia
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
A modified suspended substrate microstrip line with multilayer dielectric structure is proposed, and the leaky characteristics of the antenna structure are theoretically investigated. It is demonstrated that a suitable choice of the dimension of the structure can guarantee the antenna working in the antenna-mode region to make the antenna operate in an efficient way. Besides, very flat variation of the leakage constant with frequency can be achieved by appropriate choice of the structure parameters. It is a desirable property for practical use as a frequency scanning antenna since it ensures a stable radiation pattern with little distortions as the beam is being scanned.
Keywords :
antenna radiation patterns; leaky wave antennas; microstrip antennas; scanning antennas; substrates; antenna structure; flat variation; frequency scanning antenna; leaky characteristics; modified suspended substrate microstrip line; multilayer dielectric structure; stable radiation pattern; Antenna radiation patterns; Antenna theory; Dielectric constant; Dielectric substrates; Frequency; Information science; Microstrip antennas; Nonhomogeneous media; Partial response channels; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552350
