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Design of dual band-notched lamp-shaped antenna with UWB characteristics

机译：具有UWB特性的双带隙灯形天线设计

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摘要

To restrict electromagnetic interference at WiMAX (3.3-3.7 GHz) and wireless local area network (WLAN) (5.15-5.825 GHz) bands operating within ultra wide bandwidth (UWB) band, a novel design of lamp-shaped UWB microstrip antenna with dual band-notched characteristics is presented. The proposed antenna is composed of a lamp-shaped radiating patch with two rectangular ground planes on both the sides of the radiator with the gap of 0.57 mm. To improve impedance mismatch at middle frequencies, two triangular strips one at each of the ground plane are added; whereas a rectangular slot is etched in the radiating patch to remove impedance mismatch at higher frequencies of the UWB band. Furthermore, an L-shaped slot in the radiator and two L-shaped slots in the ground plane are used to restrict electromagnetic interference (EMI) at WiMAX and WLAN bands, respectively, without affecting the electrical performance of the UWB antenna. Effects of the key parameters on the frequency range of the notched bands are also investigated. The proposed design shows a measured impedance bandwidth of 12.5 GHz ( 2.7-14.4 GHz), with the two band-notched bands of 3.0-3.9 and 4.9-5.8 GHz. The antenna is suitable to be integrated within the portable UWB devices without EMI interference at WiMAX and WLAN bands.
机译：为了限制工作在超宽带（UWB）频带内的WiMAX（3.3-3.7 GHz）和无线局域网（WLAN）（5.15-5.825 GHz）频带上的电磁干扰，一种新颖的双灯形UWB微带天线设计刻痕特征。所提出的天线由灯形辐射贴片组成，在辐射器的两侧具有两个矩形接地平面，间隙为0.57 mm。为了改善中频处的阻抗失配，在每个接地层上增加了两个三角带；每个接地层增加了一个。而在辐射贴片中蚀刻了一个矩形缝隙，以消除UWB频段较高频率处的阻抗失配。此外，辐射器中的L形插槽和接地平面中的两个L形插槽分别用于限制WiMAX和WLAN频段的电磁干扰（EMI），而不会影响UWB天线的电气性能。还研究了关键参数对陷波频段频率范围的影响。拟议的设计显示了测量的阻抗带宽为12.5 GHz（2.7-14.4 GHz），具有3.0-3.9和4.9-5.8 GHz的两个带陷波频段。该天线适合集成在便携式UWB设备中，而不会在WiMAX和WLAN频段受到EMI干扰。

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