NDLI: Ultra-wideband high-gain dipole antenna evolved from hexagonal Sierpinski grid fractal gasket

Content Provider	IET Digital Library
Author	Li, Daotie Wu, Zhonglin Mao, Jun Fa
Abstract	Ultra-wideband high-gain dipole antennas are urgently desired for mobile communications. A novel fractal-evolved dipole called modified hexagonal Sierpinski grid carpet dipole, of which size is about 1.5λ in upper band is developed. With self-similarity and periodicity of fractal geometry, the dipole antenna is excellent in performances. It has an ultra-wide bandwidth and high gain, due to a so-called ‘array effect of element antenna’. It presents a gain as high as 12.7 dBi and stable unidirectional radiation patterns within band of 2.0–3.93 GHz (BW = 65.1%). In addition, the dipole also has good cross-polarisation differentiation, high efficiency, high front-to-back-ratio, small size, low-profile (0.156λ L), and light weight. A prototype was fabricated from a plastic body by 3D printing technology and then electroplated on the surface. Then, the sample was measured and compared with simulation results, and good agreements are obtained between them. So, correctness and validity of the design methodology are verified successfully. Due to these remarkable advantages, the fractal antenna is attractive to many radio services, such as mobile communications, defence and military, public security, aeronautics and aerospace, and so on.
Starting Page	574
Ending Page	583
Page Count	10
ISSN	17518725
Volume Number	13
e-ISSN	17518733
Issue Number	Issue 5, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/13/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5415
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2019-01-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	3D Printing Technology Antenna Radiation Pattern Cross-polarisation Differentiation Dipole Antenna Directive Antenna Element Antenna Array Effect Fractal Antenna Fractal Geometry Fractal-evolved Dipole Frequency 2.0 GHz to 3.93 GHz Hexagonal Sierpinski Grid Carpet Dipole Hexagonal Sierpinski Grid Fractal Gasket High Front-to-back-ratio Microwave Antenna Mobile Communication Single Antenna UHF Antenna Ultra Wideband Antenna Ultra-wideband High-gain Dipole Antenna Unidirectional Radiation Pattern
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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