Reconfigurable Loaded Planar Inverted-F Antenna Using Varactor Diodes
Reconfigurable Loaded Planar Inverted-F Antenna Using Varactor Diodes
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DOI：
10.1109/lawp.2011.2153174
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发表时间：
2011-05
影响因子：
4.2
通讯作者：
M. Kehn;O. Quevedo–Teruel;E. Rajo-Iglesias
中科院分区：
文献类型：
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作者：
M. Kehn;O. Quevedo–Teruel;E. Rajo-Iglesias
这封信介绍了一种紧凑的可重构多频带微带天线。频带的多重性是通过使用围绕中心内部半圆形微带贴片的同心外部金属半环来实现的。这些天线均通过公共直径平面通过垂直金属壁短路至接地平面，从而采用平面倒 F 天线 (PIFA) 的概念来减小尺寸，从而实现紧凑性。工作频率通过放置在内半圆形贴片和外半环之间的变容二极管进行调谐。除了可调谐性之外，还可以通过组合可调谐范围来加宽整体带宽。理论模拟和制造原型的测量结果非常吻合。
This letter presents a compact reconfigurable multiband microstrip antenna. The multiplicity of bands is achieved by the use of concentric external metallic semirings around a central internal semicircular microstrip patch. These are all shorted to the ground plane via a vertical metallic wall through the common diametric plane, thereby adopting the concept of the planar inverted-F antenna (PIFA) for size reduction and thus compactness. The operation frequencies are tuned by varactor diodes placed between the inner semicircular patch and the outer half-rings. In addition to tunability, the overall bandwidth may also be widened by combining the tunable range. Theoretical simulations and measurements of manufactured prototypes agree well with each other.