新型带扇形馈源的宽带缝隙天线

A new broadband slot antenna with a fan-shaped microstrip feed

介绍了一种新型的采用扇形微带馈源的宽带缝隙天线,给出了反射损失曲线和辐射方向图。该天线采用稍高的相对介电常数(εr=4.3)和薄基片(h=1.1mm),获得了约106%的阻抗带宽(S11≤-10dB),频率范围是1.65GHz～5.38GHz。采用电磁仿真软件AnsoftHFSS8.0TM对几个天线尺寸的影响进行了仿真与讨论,并与文献[6]的结果相比较,验证了设计的有效性,同时也证明了结果的可靠性。

A new broadband slot antenna with a fan-shaped microstrip feed is presented, and the return loss curve and radiation patterns of the antenna is simulated in this paper. By using a lightly higher relative permittivity （εr=4.3） and thin substrate（h= 1.1mm）, the impedance bandwidth approximately106% （S11≤-10dB） and a frequency range of 1.65GHz～5.38GHz are reached. The simulation results from Ansoft HFSS 8.0 show that the validity and reliability of the design are confirmed by comparing with the results of Ref. [6] .