空穴截断对移动卫星通信等边三角形天线特性性能的影响

M. Purnomo, J. T. S. Sumantyo, V. Kusumasari
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引用次数: 7

摘要

以前的单元件天线由两个分离的层组成,一层用于贴片天线(上),另一层用于馈线(下),使用接近馈线进行薄配置。本文提出了一种新型的空穴截断双馈天线,用于使用紧凑型等边三角形贴片天线产生紧凑型LHCP(左手圆极化),其中一个微带线馈电比另一个长,以引入90°相位延迟。研究了嵌入的孔截断对贴片的影响,使贴片天线的尺寸小于原有的天线。考虑有限地基分析,采用了矩量法(IE3D Zeland软件)。仿真结果表明,在2.5025 GHz时,增益和轴比分别为6.82 dBic和0.66 dB,贴片长度减少了12.65% (a = 52.80 mm至a = 46.12 mm)。与前一种天线相比,孔截断天线的带宽更小。
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The influence of hole-truncated to characteristic performance of the equilateral triangular antenna for mobile satellite communications
The previous single element antenna was made of two separated layers, one for the patch antenna (upper) and the other for the feed-line (below), using proximity feed for a thin configuration. In this time, a novel dual feed antenna with a hole-truncated is proposed for the generation of a compact LHCP (Left Handed Circular Polarization) using a compact equilateral triangular-patch antenna, that one of the microstrip-line feeds is longer than the other for introducing a 90° phase delay. The influence of the hole-truncated that embedded on the patch is investigated to make the patch antenna smaller than the previous antenna. The method of moments (IE3D Zeland Software) is used considering a finite ground analysis. The simulation results show that the patch length decreases by 12.65 % (a = 52.80 mm to a = 46.12 mm) with a gain and axial ratio at 2.5025 GHz being 6.82 dBic and 0.66 dB, respectively. The bandwidth of the hole-truncated antenna, by comparison of the previous antenna is smaller.
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