Design of a Wideband Planar Printed Quasi-Yagi Antenna Using Stepped Connection Structure

被引：60

作者：

Wu, Jiangniu ^{[1
]}

Zhao, Zhiqin ^{[1
]}

Nie, Zaiping ^{[1
]}

Liu, Qing-Huo ^{[2
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Engn, Chengdu 610054, Peoples R China

[2] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2014年 / 62卷 / 06期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Quasi-Yagi antenna; time-domain response; ultrawide-band antenna; unidirectional radiation pattern; ARRAY ANTENNA; TRANSITION; SIZE;

D O I：

10.1109/TAP.2014.2314471

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：

Although conventional Yagi antenna has the advantage of unidirectional radiation patterns, it is not suitable for wideband applications due to its drawback of narrow bandwidth. In this communication, a compact wideband planar printed quasi-Yagi antenna is presented. The proposed quasi-Yagi antenna consists of a microstrip line to slotline transition structure, a driver dipole, and a parasitic strip element. The driver dipole is connected to the slotline through a coplanar stripline (CPS). The proposed antenna uses a stepped connection structure between the CPS and the slotline to improve the impedance matching. Two apertures are symmetrically etched in the ground plane to improve the unidirectional radiation characteristics. Simulation and experimental results show that the unidirectional radiation patterns of the proposed antenna are good. A 92.2% measured bandwidth with S-11 < -10 dB from 3.8 to 10.3 GHz is achieved. A moderate gain, which is better than 4 dBi, is also obtained.

引用

页码：3431 / 3435

页数：6

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