短路针加载小型微带贴片天线的优化设计

Optimum design of compact microstrip patch antenna loaded with a shorting pin

短路针加载微带贴片天线结构复杂,特性受多种因素影响,且不易实验调试,因此设计这种天线非常困难.为了解决这一问题,提出了短路针加载微带贴片天线的优化设计方法.该优化设计方法共分两步进行,首先,对天线的频率特性进行优化,然后在此基础上对天线的阻抗特性进行优化.利用该法,对工作于移动通信频段的短路针加载矩形贴片天线进行了具体设计,设计结果表明,利用该法进行设计,不仅可以得到同时满足频率特性和阻抗特性的设计结果,而且设计的收敛性也大大提高.

Microstrip patch antenna loaded with a shorting pin has complex construction.It's characters are decided by many facts, and can't be adjusted. The design of this kind of antenna is difficult. In order to solve this problem, an optimization design method for this kind of antennas is presented which this can be divided into two steps which are optimizing for frequency character and optimizing for impedance character. Using this method, a rectangular microstrip patch antenna loaded with a shorting pin is designed which operated at mobile communication frequency. The results showed that, using this method to design antenna, we can get the antenna which meets the design requests both on frequency character and on impedance character quickly.