Low-Profile Epsilon-Near-Zero (ENZ) Cavity Antenna Array for Wide-Angle Beam Scanning

被引:1
|
作者
Liu, Zhenyu [1 ]
Zhang, Yongjian [1 ]
Sun, Wangyu [2 ]
Li, Yue [1 ]
机构
[1] Tsinghua Univ, Dept Elect Engn, Beijing Natl Res Ctr Informat Sci & Technol, Beijing 100084, Peoples R China
[2] Chinese Acad Sci, Aerosp Informat Res Inst, Beijing 100190, Peoples R China
来源
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2024年 / 23卷 / 07期
基金
中国国家自然科学基金;
关键词
Antenna arrays; Antennas; Antenna radiation patterns; Electric fields; Dipole antennas; Loaded antennas; Substrates; Antenna array radiation pattern; antenna arrays; epsilon near zero; low profile; wide-angle beam scanning; MICROSTRIP ANTENNA; PHASED-ARRAY; BEAMWIDTH ENHANCEMENT; PATCH ANTENNA; BAND; DESIGN;
D O I
10.1109/LAWP.2024.3382290
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
In this letter, a low-profile epsilon-near-zero (ENZ) cavity antenna array is proposed to achieve wide-angle beam scanning. The proposed array utilizes four slot-fed cavity antenna elements that operate with the ENZ mode, in which the electric field presents a unique sign-function-like distribution. By properly designing the width of the ENZ cavity, a wide 3 dB beamwidth is achieved in a low profile to increase the beam scanning angle of the array configuration. Furthermore, the narrow width of the antenna element also facilitates a decreased spacing between array elements, enabling the use of the appropriate spacing to increase the scanning angle. Different from the conventional wide-angle beam-scanning arrays with high profile, the proposed ENZ cavity antenna array achieves a remarkable beam scanning angle of +/- 72 degrees (+/- 73 degrees in the measurement) while maintaining a low profile of only 0.03 lambda(0), exhibiting the potential applications in low-profile phased array systems.
引用
收藏
页码:2115 / 2119
页数:5
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