Reconfigurable Fresnel Lens Based on an Active Second-Order Bandpass Frequency-Selective Surface

被引：38

作者：

Li, Huan ^{[1
]}

Ma, Chao ^{[1
]}

Zhou, Tianyi ^{[1
]}

Wang, Jun ^{[1
]}

Ye, Dexin ^{[1
]}

Sun, Yongzhi ^{[2
]}

Zhu, Weiqiang ^{[2
]}

Denidni, Tayeb A. ^{[3
]}

Ran, Lixin ^{[1
]}

机构：

[1] Zhejiang Univ, Lab Appl Res Electromagnet Are, Hangzhou 310027, Peoples R China

[2] Nanjing Inst Elect Equipment, Nanjing 210007, Peoples R China

[3] Natl Inst Sci Res INRS, Montreal, PQ H5A 1K6, Canada

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2020年 / 68卷 / 05期

基金：

中国博士后科学基金;

关键词：

Lenses; Frequency selective surfaces; Capacitance; Beam steering; Varactors; Phased arrays; Active; beam steering; frequency-selective surface (FSS); Fresnel lens; reconfigurable antenna; LOW-PROFILE; ANTENNA; POLARIZATION; DESIGN;

D O I：

10.1109/TAP.2019.2948392

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 communication, we experimentally demonstrate a frequency- and beam-reconfigurable lens antenna based on an active second-order bandpass frequency-selective surface (FSS). The FSS lens is composed of three nonresonant metallic layers separated by two thin dielectric substrates. By integrating microwave varactors in FSS unit cells, the center frequency of this bandpass FSS can be tuned from 4.0 to 5.8 GHz by a direct-current (dc) bias voltage. Based on this wideband tunability, the phase-correction technique is used to implement a microwave Fresnel lens. The experimental results show that the proposed 1-D lens antenna can achieve frequency-reconfigurable beam steering within a 1 GHz bandwidth. With advantages of low cost and concise structure, the proposed reconfigurable lens antenna can be potentially used in a wide range of applications.

引用

页码：4054 / 4059

页数：6

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