A Compact and Low-Profile High-Gain Multilayer Vivaldi Antenna Based on Gradient Metasurface Superstrates

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-02-18 DOI:10.1109/LAWP.2025.3542315

Ababil Hossain;Stephen Pancrazio;Tyler Kelley;Anh-Vu Pham

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Abstract

This letter presents the design, analysis, and implementation of an electrically compact high-gain multilayer Vivaldi antenna. The multilayer antenna comprises gradient metasurface superstrate layers arranged on the top and bottom of a central electrically compact Vivaldi antenna via low-loss polyethylene foam spacers. The overall electrical dimensions of the antenna are

$\text{0.36}\lambda _{0}$

$\text{0.29}\lambda _{0}$

$\text{0.06}\lambda _{0}$

, covering a bandwidth from 450 MHz to 10 GHz with an average measured forward gain of more than 15 dBi (

$\lambda _{0}$

: free-space wavelength at 450 MHz). The unit pixel dimensions of the gradient metasurface layer have been optimized to achieve a high-flat gain profile within the desired bandwidth of the antenna. The metasurface layers are printed on thin Kapton polyimide boards to minimize the system's weight. The prototyped antenna is extremely low-profile and weighs 182 g, making it ideally suited for lightweight ultrawideband (UWB) applications needing a very high forward gain.

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基于梯度超表面叠加层的紧凑、低轮廓高增益多层维瓦尔第天线

本文介绍了一种电紧凑型高增益多层维瓦尔第天线的设计、分析和实现。多层天线包括通过低损耗聚乙烯泡沫垫片设置在中央电紧凑型维瓦尔第天线的顶部和底部的梯度超表面叠层。天线的整体电气尺寸为$\text{0.36}\lambda _{0}$ × $\text{0.29}\lambda _{0}$ × $\text{0.06}\lambda _{0}$，覆盖450 MHz至10 GHz的带宽，平均测量正向增益超过15 dBi （$\lambda _{0}$: 450 MHz的自由空间波长）。梯度超表面层的单位像素尺寸已被优化，以在天线的期望带宽内实现高平坦增益。超表层印刷在薄卡普顿聚酰亚胺板上，以尽量减少系统的重量。原型天线非常低调，重量为182克，非常适合需要非常高正向增益的轻型超宽带（UWB）应用。

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.