具有一层空气隙的圆形微带贴片天线的混合模分析  

A HYBRID-MODE ANALYSIS OF A CIRCULAR DISK MICROSTRIP ANTENNA WITH AN AIR GAP

作　　者：黄景熙[1] 范治波[1] 

机构地区：[1]武汉大学空间物理与电子信息学系,武汉430072

出　　处：《武汉大学学报（自然科学版）》1993年第3期49-54,共6页Journal of Wuhan University(Natural Science Edition)

摘　　要：对具有一层空气隙的圆形微带贴片天线的谐振频率和幅射方向图给出了混合模解。此解是应用伽略金法于汉克尔变换域中所获得。给出的数值结果表明:当空气隙宽度增加时,谐振频率也增加,而且在空气隙宽度比较小的数值时,增加的更快,对于电场分量辐射方向图的波束宽度则减小,某些结果与实验数据相比较,其一致性很好。Recently,much interest has been show in the design of microstrip antennas with air gaps. The major reason for this interest is that the resouant frequencies can be altered and the bandwidth can be widened by the use of an air gap. Most of the previous theoretical work has been carried out only with the microstrip antenuas without air gaps. This paper presents a hyrid-mode solution for the resonant frequencies and radiation patterns of a circular disk microstrip antennna with an air gap. A solution to the hybrid-mode equations is obtained by using Galerkin's method applied in the Hankel transform domain. Numerical results are presented showing that as the air gap width increases, resonant frequencies increase more qwickly for small valuos of air gap width and that as the air gap width incseases, the beamwidth of radiation patterns for field components decreases. Some results are compared with the available experimental data showing the quite good agreement.

关 键 词：混合模分析 圆形 微带贴片天线 

分 类 号：TN822.4[电子电信—信息与通信工程]