Title :
Analysis of microstrip leaky wave antenna with FDTD
Author :
Li, Yuanxin ; Jiang, Hongyan ; Long, Yunliang
Author_Institution :
Dept. of Electron. & Commun. Eng., Sun Yat-Sen Univ., Guangzhou, China
Abstract :
A new way to calculate the complex propagation constant, γ=α+jβ, of a microstrip leaky wave antenna (MLWA) is presented. The calculated normalized complex propagation constant fits well with the comparison data. The properties of the leaky wave antenna in the first high mode are discussed using the simple cavity theory. It is explained, in principle, why the MLWA has a leaky region and critical frequency. Some simple rules about how to choose the width and permittivity of the MLWA are given.
Keywords :
antenna theory; finite difference time-domain analysis; leaky wave antennas; microstrip antennas; FDTD analysis; complex propagation constant; critical frequency; first high mode; leaky region; microstrip antenna; microstrip leaky wave antenna; permittivity; simple cavity theory; width; Difference equations; Finite difference methods; Frequency; Leaky wave antennas; Maxwell equations; Microstrip antennas; Permittivity; Propagation constant; Sun; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551300
