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为了使同轴线馈电矩形贴片天线有较高的辐射增益,获得更远的传输距离,在天线尺寸增大不多的前提下,采用相对介电常数较低的材料和尽可能大的介质板厚度,设计出了中心频率fr=3GHz,相对带宽3.47%,S11最小值-40.7542d B,最大增益为6.9785d Bi的贴片天线,性能明显优于相对介电常数较高的材料和介质板厚度较小的贴片天线。
In order to make coaxial feeding rectangular patch antenna have higher radiation gain, get farther transmission distance, in the small increase of antenna size under the premise of the use of relatively low dielectric constant material and as large as possible The thickness of the dielectric board, the design of the center frequency fr = 3GHz, the relative bandwidth of 3.47%, S11 minimum -40.7542d B, the maximum gain of 6.9785d Bi patch antenna significantly better than the relative dielectric constant higher material and Small dielectric patch antenna.