Miniaturisation of the triangular patch antenna by the novel dual reverse arrow fractal.pdfVIP

下载本文档

9
0
约1.88万字
约 7页
2017-04-13 发布于江苏
举报
版权申诉

Miniaturisation of the triangular patch antenna by the novel dual reverse arrow fractal.pdf

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

Miniaturisation of the triangular patch antenna by the novel dual reverse arrow fractal

IET Microwaves, Antennas PropagationResearch ArticleMiniaturisation of the triangular patch antenna by the novel dual-reverse-arrow fractalIET Microw. Antennas Propag., pp. 1–7 The Institution of Engineering and Technology 2014ISSN 1751-8725 Received on 12th July 2014 Accepted on 7th October 2014 doi: 10.1049/iet-map.2014.0462 Homayoon Orazi ?, Hadi Soleimani Center of Excellence in Railway Transportation, Department of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran ? E-mail: h_oraizi@iust.ac.ir Abstract: A novel geometry called the dual-reverse-arrow fractal (DRAF) is introduced, which is the combination of two dual Koch fractals. It is implemented on an equilateral-triangular patch antenna. This structure has smaller dimensions compared to the rectangular structure and has wide applications in arrays to reduce their size. Furthermore, the use of triangular elements in array leads to the decrease of side-lobe levels. Four cases of the triangular patch are compared to show that the presented fractal geometry is effective in the miniaturisation of patch antenna and decreasing its resonance frequency, while the antenna bandwidth and efficiency are kept constant. To increase the antenna efficiency, an air space is placed under the patch. Finally, a portion of the corner of fractal triangle is cut to generate circular polarisation by proper positioning of the feed points. The proposed DRAF antenna achieved 40% reduction in size compared to the similar triangular antenna. The proposed DRAF geometry has potential applications in various radiating systems and microwave devices.1 Introduction The fractal geometries repeat their geometries by a particular scale in successive iterations. Consequently, they will possess a long length in a limited confined volume. Accordingly, several fractal geometries, such as the Koch, Minkowski, Hilbert and tree fractals, have been applied to dipole and loop antennas [1, 2]. It is well known that the anten