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引用次数: 0
摘要
本文提出并实验测试了一种改进的用于超宽带(UWB)工作的叉形调谐根馈电圆槽天线。该天线由改进的圆形槽模型和叉形调谐根组成。天线印刷在34.0 mm × 30.0 mm的FR4基板上，基板厚度为1.0 mm，相对介电常数为4.4。研究了圆槽和叉形调谐根各参数对超宽带运行的影响。在基板上制作改进的圆形槽和叉形调谐根，以实现宽带工作和良好的阻抗匹配。实验结果表明，测量回波损耗与模拟回波损耗具有良好的一致性，满足-10 dB阻抗带宽要求，同时覆盖UWB频段。此外，该天线在超宽带波段具有良好的辐射特性和增益。
A Design for a Modified Circular Slot Antenna with a Fork-like Tuning Stub for UWB Operations
This paper proposes and experimentally tests a modified circular slot antenna fed by a fork-like tuning stub for ultra-wideband (UWB) operation. The proposed antenna consists of a modified circular slot model and fork-like tuning stub. The proposed antenna is printed on a 34.0 ㎜ × 30.0 ㎜ FR4 substrate with thickness of 1.0 mm and relative permittivity of 4.4. The effect of various parameters of the circular slot and fork-like tuning stub is investigated for UWB operation. The modified circular slot and fork-like tuning stub are fabricated on the substrate to achieve wideband operation and good impedance matching. Experimental results demonstrated that the measured return loss exhibits an acceptable agreement with the simulated return loss and satisfies the -10 dB impedance bandwidth requirement while simultaneously covering the UWB bands. In addition, the proposed antenna shows good radiation characteristics and gains in the UWB bands.
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