Low-index-metamaterial for gain enhancement of planar terahertz antenna

Low-index-metamaterial for gain enhancement of planar terahertz antenna

We theoretically present a high gain planar antenna at terahertz (THz) frequencies by combing a conventional log-periodic antenna (LPA) with a low-index-metamaterial (LIM, |n| < 1). The LIM is realized by properly designing a fishnet metamaterial using full-wave finite-element simulation. Owing t...

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Main Authors: Qing-Le Zhang, Li-Ming Si, Yongjun Huang, Xin Lv, Weiren Zhu
Format: Article
Language:English
Published: AIP Publishing LLC 2014-03-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4868384
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spelling doaj-c9c77393ab9941ada644a202a99d931b2020-11-24T23:55:56ZengAIP Publishing LLCAIP Advances2158-32262014-03-0143037103037103-710.1063/1.4868384003403ADVLow-index-metamaterial for gain enhancement of planar terahertz antennaQing-Le Zhang0Li-Ming Si1Yongjun Huang2Xin Lv3Weiren Zhu4Beijing Key Laboratory of Millimeter Wave and Terahertz Technology, Department of Electronic Engineering, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, ChinaBeijing Key Laboratory of Millimeter Wave and Terahertz Technology, Department of Electronic Engineering, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, ChinaKey Laboratory of Broadband Optical Fiber Transmission & Communication Networks, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, ChinaBeijing Key Laboratory of Millimeter Wave and Terahertz Technology, Department of Electronic Engineering, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, ChinaAdvanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Monash University, Clayton, VIC 3800, AustraliaWe theoretically present a high gain planar antenna at terahertz (THz) frequencies by combing a conventional log-periodic antenna (LPA) with a low-index-metamaterial (LIM, |n| < 1). The LIM is realized by properly designing a fishnet metamaterial using full-wave finite-element simulation. Owing to the impedance matching, the LIM can be placed seamlessly on the substrate of the LPA without noticeable reflection. The effectiveness of using LIM for antenna gain enhancement is confirmed by comparing the antenna performance with and without LIM, where significantly improved half-power beam-width (3-dB beam-width) and more than 4 dB gain enhancement are seen within a certain frequency range. The presented LIM-enhanced planar THz antenna is compact, flat, low profile, and high gain, which has extensive applications in THz systems, including communications, radar, and spectroscopy.http://dx.doi.org/10.1063/1.4868384
collection DOAJ
language English
format Article
sources DOAJ
author Qing-Le Zhang
Li-Ming Si
Yongjun Huang
Xin Lv
Weiren Zhu
spellingShingle Qing-Le Zhang
Li-Ming Si
Yongjun Huang
Xin Lv
Weiren Zhu
Low-index-metamaterial for gain enhancement of planar terahertz antenna
AIP Advances
author_facet Qing-Le Zhang
Li-Ming Si
Yongjun Huang
Xin Lv
Weiren Zhu
author_sort Qing-Le Zhang
title Low-index-metamaterial for gain enhancement of planar terahertz antenna
title_short Low-index-metamaterial for gain enhancement of planar terahertz antenna
title_full Low-index-metamaterial for gain enhancement of planar terahertz antenna
title_fullStr Low-index-metamaterial for gain enhancement of planar terahertz antenna
title_full_unstemmed Low-index-metamaterial for gain enhancement of planar terahertz antenna
title_sort low-index-metamaterial for gain enhancement of planar terahertz antenna
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2014-03-01
description We theoretically present a high gain planar antenna at terahertz (THz) frequencies by combing a conventional log-periodic antenna (LPA) with a low-index-metamaterial (LIM, |n| < 1). The LIM is realized by properly designing a fishnet metamaterial using full-wave finite-element simulation. Owing to the impedance matching, the LIM can be placed seamlessly on the substrate of the LPA without noticeable reflection. The effectiveness of using LIM for antenna gain enhancement is confirmed by comparing the antenna performance with and without LIM, where significantly improved half-power beam-width (3-dB beam-width) and more than 4 dB gain enhancement are seen within a certain frequency range. The presented LIM-enhanced planar THz antenna is compact, flat, low profile, and high gain, which has extensive applications in THz systems, including communications, radar, and spectroscopy.
url http://dx.doi.org/10.1063/1.4868384
work_keys_str_mv AT qinglezhang lowindexmetamaterialforgainenhancementofplanarterahertzantenna
AT limingsi lowindexmetamaterialforgainenhancementofplanarterahertzantenna
AT yongjunhuang lowindexmetamaterialforgainenhancementofplanarterahertzantenna
AT xinlv lowindexmetamaterialforgainenhancementofplanarterahertzantenna
AT weirenzhu lowindexmetamaterialforgainenhancementofplanarterahertzantenna
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