V形微带缝隙天线

提出了一种新颖的V形微带缝隙天线,地板上开一个直角V形缝隙,在V形缝隙的顶角处附加一个小直角三角形补偿隙,通过改变三角形补偿隙面积的大小可以对天线阻抗匹配进行优化,由基片另一侧的箭形微带线终端对缝隙单元馈电。这种天线易于实现宽带特性,设计简单,便于加工。文中给出了天线阻抗和方向图的计算结果,并给出了反射损耗和增益的实验结果。实测结果表明,该天线的阻抗带宽达到了43%,覆盖了1146~1776MHz的频率范围,-10dB阻抗带宽内增益值在4.5~6.5dB之间,平均增益约为5.5dB。

V-Shaped Microstrip Slot Antenna

A novel V-shaped slot antenna with a small right-angle triangle of supplementary slot is presented. The slot element is fed by an arrow-shaped terminal of a microstrip line printed on the other side of substrate, and its good impedance matching is achieved by adjusting the area of this triangular supplementary slot. The design of the antenna is simple, and the antenna is easy to realize broadband characteristics and be fabricated. The simulated results of the impedance and radiation patterns are described and the experimental results of its return loss and gain are presented. The measured results show that the impedance bandwidth of approximately 43% is obtained, covering a frequency range of l146MHz - 1776MHz. The gain within - 10dB impedance bandwidth ranges from 4.5dB to 6.5dB, with a corresponding average gain of roughly 5.5dB.