Broadband tapered microstrip leaky-wave antenna

被引：63

作者：

Hong, WC ^{[1
]}

Chen, TL

Chang, CY

Sheen, JW

Lin, YD

机构：

[1] Natl Chiao Tung Univ, Inst Communicat Engn, Hsinchu, Taiwan

[2] Natl Cent Univ, Dept Phys, Tao Yuan, Taiwan

[3] Walsin Technol Corp, Tao Yuan, Taiwan

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2003年 / 51卷 / 08期

关键词：

broadband planar balun; feeding structure; leaky-wave; microstrip; tapered antenna;

D O I：

10.1109/TAP.2003.814739

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 study proposes a novel scheme based on the characteristics of leaky-wave antennas for the empirical design of broadband tapered microstrip leaky-wave antennas. This scheme can explain and approximately model the radiation characteristics of a linearly tapered leaky-wave microstrip antenna. A broadband feeding structure that uses the balanced and the inverted balanced microstrip lines to form a pair of broadband baluns is also presented. The measured return loss of the inverted balanced microstrip lines has a VSWR less than or equal to 2 from dc to 18.6 GHz and that of the back-to-back feeding structures has a VSWR less than or equal to 2 from 2.2 to 18.6 GHz. This feeding structure can be used to feed a broadband planar leaky-wave antenna with a fixed mainbeam that uses the tapered microstrip structure. The measured bandwidth of the antenna for a VSWR less than or equal to 2 exceeds 2.3:1.

引用

页码：1922 / 1928

页数：7

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