Method of Suppressing the Side Lobe of a Tapered Short Leaky Wave Antenna

被引：7
|
作者：
Wu, Jin-Wei [1 ]
Wang, Chien-Jen [2 ]
Jou, Christina F. [1 ]
机构：
[1] Natl Chiao Tung Univ, Dept Commun Engn, Hsinchu 30010, Taiwan
[2] Natl Univ Tainan, Dept Elect Engn, Tainan 700, Taiwan
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2009年 / 8卷
关键词：
Beam scanning; leaky wave antenna (LWA); side lobe; tapered antenna; MICROSTRIP; RADIATION;
D O I：
10.1109/LAWP.2009.2034474
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter demonstrates a method for suppressing the side lobe of a tapered short leaky wave antenna (LWA). The proposed LWA contains a tapered microstrip radiator with a shorting pin and two rectangular slots. This design of the two slots and the shorting pin can interfere with the current distribution of tapered LWAs to suppress the radiation of the side lobe. A matching stub is added along the feeding line to achieve impedance matching. According to the measured results, the proposed design improves the side lobe level (SLL) from 0 dB for the tapered short LWA (about 1.5 lambda(0) at 4.5 GHz) to -6.13 dB for the proposed LWA at 6.4 GHz. The 7-dB impedance bandwidth is about 1.6 GHz, and the scanning range is about 43 degrees.
引用
收藏
页码：1146 / 1149
页数：4
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