Printed Frequency Beam-Scanning Antenna With Flat Gain and Low Sidelobe Levels
Printed Frequency Beam-Scanning Antenna With Flat Gain and Low Sidelobe Levels
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DOI：
10.1109/lawp.2013.2248696
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发表时间：
2013-02
影响因子：
4.2
通讯作者：
L. Cui;Wen Wu;D. Fang
中科院分区：
文献类型：
--
作者：
L. Cui;Wen Wu;D. Fang
提出并研究了一种具有逆火对端火波束引导能力的频率波束扫描天线。该天线采用印刷平面结构，由低损耗慢波印刷曲线构成，该曲线是基于双侧均匀模宽频耦合悬浮微带线（BSML）。本文对曲线单元的传播特性及其在频率扫描中的应用原理进行了广泛的研究。该印刷天线实现了-27.5°~ 46°的测量波束扫描，频率灵敏度为43.24°/GHz，最大增益为15.5 dBi。在8.9 ~ 10.6 GHz的整个频率范围内，天线的平坦增益大于13 dBi。旁瓣电平接近20db。说明了这种天线的设计灵活性。
A frequency beam-scanning antenna with backfire-to-endfire beam-steering capability is proposed and investigated. This antenna is with printed planar structure that consists of a low-loss slow-wave printed meander line based on the even-mode bilateral broadside-coupled suspended microstrip line (BSML). The propagation properties of the meander-line unit and its principles for frequency-scanning applications are studied extensively. This printed antenna achieves the measured beam scanning of -27.5° to 46° with the frequency sensitivity of 43.24°/GHz and a maximum gain of 15.5 dBi. The antenna exhibits flat gain of more than 13 dBi in the whole frequency range from 8.9 to 10.6 GHz. The sidelobe levels are near 20 dB. The design flexibility of this kind of antenna is shown.