用于RFID/WiMAX/WLAN应用的宽带圆极化分形天线

IF 0.7 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Progress in Electromagnetics Research Letters Pub Date : 2023-01-01 DOI:10.2528/pierl23032601

E. Wang, Xiufeng Liu, Hu Chang

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引用次数: 0

摘要

提出了一种用于RFID/WiMAX/WLAN应用的新型宽带圆极化(CP)偶极子天线。印刷在衬底两侧的一对交叉扇形偶极子被用作初级辐射元件。天线通过在偶极子之间使用90◦相移微带线实现圆极化。通过将扇形偶极子边缘转化为闵可夫斯基分形曲线，可以实现天线的小型化和宽带化。此外，在分形交叉偶极子中加入u型槽可以获得更宽的带宽。测试结果表明，该天线在VSWR < 2时的宽阻抗带宽为63.2% (1.9{3.7 GHz)， 3db轴比(AR)带宽为42.9% (2.2{3.4 GHz)。工作频带的最大增益可达7dbi。该天线具有良好的低频和高频辐射特性，可应用于RFID、WLAN、WiMAX等通信系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Wideband Circular Polarized Fractal Antenna for RFID/WiMAX/WLAN Applications

|A novel wideband circularly polarized (CP) dipole antenna for RFID/WiMAX/WLAN applications is presented. A pair of crossed fan-shaped dipoles printed on both sides of the substrate are used as the primary radiating elements. The antenna achieves circular polarization by using a 90 ◦ phase shifted microstrip line between the dipoles. By changing the edge of fan dipoles into Minkowski fractal curve, miniaturization and wide bandwidth of the antenna can be realized. Besides, incorporating the U-slot into the fractal crossed dipoles can obtain a wider bandwidth. The test results show that the proposed antenna achieves a wide impedance bandwidth of 63.2% (1.9{3.7 GHz) for VSWR < 2 and a 3-dB axial ratio (AR) bandwidth of 42.9% (2.2{3.4 GHz). The maximum gain in the operating frequency band can reach 7 dBi. The proposed antenna has good radiation characteristics in both low and high frequencies, which makes it a candidate for applications of RFID, WLAN, WiMAX, and other communication systems.

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来源期刊

Progress in Electromagnetics Research Letters ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

2.20

自引率

11.10%

发文量