关于具有空气隙的矩形微带天线的谐振频率探讨

Discussion on resonant frequency of rectangular microstrip antennas with air gaps

对微带天线的腔模理论进行修改,利用电磁场理论推导了具有空气隙的矩形微带天线的谐振频率的计算公式,同时考虑了边缘效应,引入了有效介电常数,对谐振频率的计算公式进行了修正。最后将其用于实例的计算结果与文献[3,4]实测结果相比较。结果表明,理论计算结果与实测值有良好的吻合。

The cavity model theory of microstrip antenna is modified and a calculation formula of resonant frequency of rectangular microstrip antennas with air gaps is deduced by using electromagnetic field theory. At the same time, the marginal effect is taken into account, an effective dielectric constant is introduced and the resonant frequency formula is modified as well. In the end, the result of calculation with some practical examples is compared with the result in document [3, 4] and the results show that the theoretical calculation results and the measured value has a good match.