使用多共振曲线线元件的宽带VHF/UHF天线

B. Yıldırım
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引用次数: 0

摘要

为$\mathbf{VSWR}\leq 3$设计了一种工作频率为270 MHz至1.56 GHz的小型宽带VHF/UHF天线。天线的辐射单元是一个平面曲线,具有多个窄带共振,建立在FR4衬底上。当曲线辐射单元在顶部加一个FR4层时,共振频率会下降。如果顶部电介质的一端被金属化,这些共振会进一步向下移动。如果还使用金属化的底部电介质,则这种效果会增强。在这种情况下,共振最终合并并形成宽带响应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Broadband VHF/UHF Antenna Using a Multi-Resonance Meanderline Element
A compact and broadband VHF/UHF antenna operating from 270 MHz to 1.56 GHz for $\mathbf{VSWR}\leq 3$ has been designed. Radiating element of the antenna is a planar meander line which exhibits multiple narrowband resonances and has been built on FR4 substrate. When the meanderline radiating element is loaded by an additional FR4 layer on top, the resonances shift down in frequency. If the top dielectric is metallized at one end, these resonances shift further down. This effect is enhanced if a metallized bottom dielectric is also employed. And for this case, the resonances eventually merge and form a broadband response.
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