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对小型双层微带贴片天线进行理论分析,指出已有文献中的错误,并对其进行了改进,给出了天线输入阻抗的计算公式.利用改进后的计算公式所得计算结果与实测结果相吻合.对天线输入阻抗和谐振频率随馈电位置的变化情况进行了研究.结果显示天线输入阻抗随馈电位置变化,而天线谐振频率基本不随馈电位置变化.
The theoretical analysis of the small double-layer microstrip patch antenna is made, the errors in the existing literature are pointed out and the improvement is made, and the formula for calculating the input impedance of the antenna is given. By using the improved calculation formula and the measured results The results show that the input impedance of the antenna varies with the feeding position, while the resonant frequency of the antenna does not change with the feeding position basically.