摘要
该文介绍了一种由双圆柱体单元组成的全向天线输入阻抗的计算方法。文中将全向天线分解为馈电子系统和辐射子系统,同时将辐射子系统等效成一个N端口网络。首先根据传输线上电压、电流的传播关系,推导出网络的端口电压,端口电流和端口阻抗,然后由传输线上阻抗变换关系推导出天线的输入阻抗。从而可见,为实现该天线的阻抗匹配只须调节天线两端的短路活塞位置。同时,实测值验证了天线样品反射系数的计算结果。
The input impedance of antenna array that consists of dual-cylindrical units is investigated. In this paper, the antenna array is separated into two parts: feeding sub-system and radiant sub-system. Simultaneously, the radiant sub-system is equivalent to a. TV-port network. First, a set of voltage equations is presented according to the transmission line theory, where the voltages, currents, and impedances for each port of network are deduced. Secondly, the relations between total input impedance and that of each port are given. It is indicated that the input impedance of the antenna can be matched by moving the two pistons at the ends. The measured data of the antenna sample verify the results of the calculation.
出处
《电子与信息学报》
EI
CSCD
北大核心
2002年第3期395-401,共7页
Journal of Electronics & Information Technology
