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引用次数: 7
摘要
介绍了一种非常紧凑的微带馈电三带陷波超宽带天线。该天线在贴片中使用开放的四分之一波长槽来拒绝3.5 GHz(WiMAX)，在贴片和地中分别使用半波长槽来拒绝5.5 GHz(WLAN)和8.2 GHz(ITU ' X '下行频段)。在紧凑型超宽带天线中嵌入三种抑制带设计时，面临的主要问题是各带间的交叉耦合。仿真VSWR结果和辐射方向图表明，由于在抑制带之间提供了最佳间隔，所得到的三频段陷波天线在所需的多宽频下工作良好，没有共存频段的干扰。这个天线的尺寸是14 * 22 * 1.6 mm 3，非常紧凑。所提天线的分数带宽为125%。在所需的UWB波段内也获得了良好的电压驻波比和辐射方向图。天线的紧凑尺寸使其成为无线个人区域网络(WPAN)应用的理想选择。
A very compact triple band notched microstrip fed UWB antenna
A very compact microstrip fed triple band notched (Ultra Wide Band)UWB antenna is presented here. The antenna uses open ended quarter wavelength slot in the patch for rejecting 3.5 GHz (WiMAX) and a half wavelength slot in patch and ground respectively for rejecting 5.5 GHz (WLAN) and 8.2 GHz(ITU ‘X’ downlink band)respectively. While embedding the whole three rejection bands design to the compact UWB antenna, the main problem faced was the cross coupling between the bands. The simulated VSWR results and radiation pattern shows that due to the optimum spacing provided between the rejection band design the resultant triple band notched antenna operates fairly at required MUWB frequencies without interferences from co-existing bands. The size of this antenna is 14∗22∗1.6 mm 3 which is very compact. The fractional bandwidth of the proposed antenna is 125%. Good Voltage Standing Ratio (VSWR) and radiation pattern are also obtained in the required UWB band. The compact size of antenna makes it a suitable candidate for Wireless Personal Area Network Applications (WPAN).
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