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A Very Compact and Low Profile UWB Planar Antenna with WLAN Band Rejection

机译:具有WLAN频段抑制功能的非常紧凑且外形小巧的UWB平面天线

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摘要

A low-cost coplanar waveguide fed compact ultrawideband (UWB) antenna with band rejection characteristics for wireless local area network (WLAN) is proposed. The notch band characteristic is achieved by etching half wavelength C-shaped annular ring slot in the radiating patch. By properly choosing the radius and position of the slot, the notch band can be adjusted and controlled. With an overall size of 18.7 mm × 17.6 mm, the antenna turns out to be one of the smallest UWB antennas with band-notched characteristics. It has a wide fractional bandwidth of 130% (2.9–13.7 GHz) with VSWR < 2 and rejecting IEEE 802.11a and HIPERLAN/2 frequency band of 5.1–5.9 GHz. Stable omnidirectional radiation patterns in the H plane with an average gain of 4.4 dBi are obtained. The band-notch mechanism of the proposed antenna is examined by HFSS simulator. A good agreement is found between measured and simulated results indicating that the proposed antenna is well suited for integration into portable devices for UWB applications.
机译:提出了一种具有带阻特性的低成本共面波导馈电紧凑型超宽带(UWB)天线,用于无线局域网(WLAN)。通过刻蚀辐射贴片中的半波长C形环形槽来获得陷波特性。通过正确选择槽口的半径和位置,可以调整和控制陷波带。该天线的整体尺寸为18.7mm×17.6mm,是具有带隙特性的最小的UWB天线之一。它具有VSWR <2的130%(2.9-13.7 GHz)的较宽带宽,并拒绝了5.1-5.9 GHz的IEEE 802.11a和HIPERLAN / 2频带。在H平面上获得了稳定的全向辐射方向图,平均增益为4.4 dBi。通过HFSS模拟器对所提出天线的带隙机制进行了研究。在测量结果和模拟结果之间找到了很好的一致性,表明所建议的天线非常适合集成到UWB应用的便携式设备中。

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