之间的通讯系统或工作频段调谐的变化是通过了一个天线单元的谐振频率。
Change between communication systems or operating bands is achieved by tuning the resonant frequency of an antenna element.
共振频率可以改变被动的加载与调谐组件，它可与天线单元和接地层放置天线。
Resonant frequency can be changed by loading the antenna with a reactive tuning component, which can be placed between the antenna element and the ground plane.
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