Frequency-Fixed Beam-Scanning Leaky-Wave Antenna Using Electronically Controllable Corrugated Microstrip Line

被引：120
作者：
Wang, Meng [1 ,2 ]
Ma, Hui Feng [1 ,2 ]
Zhang, Hao Chi [1 ,2 ]
Tang, Wen Xuan [1 ,2 ]
Zhang, Xuan Ru [1 ,2 ]
Cui, Tie Jun [1 ,2 ]
机构：
[1] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
[2] Synerget Innovat Ctr Wireless Commun Technol, Nanjing 210096, Jiangsu, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 09期
基金：
美国国家科学基金会;
关键词：
Electronically controlled beam scanning; leaky-wave antennas (LWAs); surface impedance modulation; BROADSIDE RADIATION; SURFACE; IMPEDANCE; OPTIMIZATION; GAIN;
D O I：
10.1109/TAP.2018.2845452
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：
An electronically controllable microstrip leaky-wave antenna (LWA) to steer the radiations at a fixed frequency is presented. The proposed LWA is composed of a corrugated microstrip line loaded by the varactor diodes with triangular-modulated surface impedance. Due to the periodical modulation of the surface impedance, the guided waves can be converted into the leaky-wave radiations efficiently with frequency-scanning property. Furthermore, the surface impedance of the LWA can be reconfigured by changing the capacitance of the varactor diode through dc bias voltage, which will make the radiation beam steer in a large angle range accordingly at a fixed frequency. Both numerical simulations and experimental results show that the radiation beams can he controlled for continuously steering at each frequency from 5.5 to 5.8 GHz by changing the dc bias voltage from 0 to 20 V, in which the scanning angle can reach as high as 45 degrees.
引用
收藏
页码：4449 / 4457
页数：9
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