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本文提出了一种用于可植入倒F天线(PIFA)阻抗匹配及小型化的方法。通过将螺旋PIFA天线以短路点和馈电点为界分割成三个区域,并在这三个区域所在地板内引入不同长度的开路槽线,来分析其对可植入PIFA产生的影响。仿真结果表明,通过在馈电点一侧地板上引入开路槽线,PIFA能够好地匹配到50Ω,并形成宽带性能。此外,在短路点和馈电点之间的地板上引入开路槽线,PIFA在形成很好匹配的同时能够实现小型化。
This paper presents a method for impedance matching and miniaturization of an implantable inverted-F antenna (PIFA). The effect of implanted PIFA on implantable PIFA was analyzed by splitting the helical PIFA antenna into three regions by the short-circuit point and the feed-point, and introducing open-drain troughs of different lengths in the floor where the three regions are located. The simulation results show that PIFA can be well matched to 50Ω and form a broadband performance by introducing an open slot line on the floor of the feed point. In addition, the introduction of open slotted slots in the floor between the short-circuit point and the feed-in point enables the PIFA to be miniaturized while forming a good match.