All-Metal Endfire Antenna With High Gain and Stable Radiation Pattern for the Platform-Embedded Application

被引：33
作者：
Hou, Yuefeng [1 ]
Li, Yue [1 ]
Zhang, Zhijun [1 ]
Iskander, Magdy F. [2 ]
机构：
[1] Tsinghua Univ, Beijing Natl Res Ctr Informat Sci & Technol, Beijing 100084, Peoples R China
[2] Univ Hawaii Manoa, Hawaii Ctr Adv Commun, Honolulu, HI 96822 USA
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2019年 / 67卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Endfire; high endfire gain; platform embedded; slot array; LEAKY-WAVE ANTENNA; WIDE-BAND; ARRAY;
D O I：
10.1109/TAP.2018.2879822
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 paper presents a novel high-gain endfire slot antenna array fed by air-substrate microstrip line. It has a simple and compact structure consisting of a copper strip and two copper sheets. Designed based on the slot antenna array, the antenna could be embedded into a large metallic platform. The surface wave above the antenna radiates the energy to free space. Fed by the air-substrate microstrip line, the antenna works on the TEM mode. Therefore, the antenna obtains a suitable phase constant to realize stable endfire radiation pattern and could be designed by a long structure to realize high endfire gain. Because all of the antennas are designed by metal, it has the characteristics of high strength, easy fabrication, and low cost. With the radiating aperture of 3.5 wavelength, the antenna achieves a measured endfire gain of 11.81 dBi. The measured 1 and 3 dB gain bandwidths reach 4.5% and 8.4%, respectively. Good matching and stable endfire radiation pattern are obtained over the entire operating band from 3.75 to 4.15 GHz.
引用
收藏
页码：730 / 737
页数：8
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