Open AccessA Compact Fractal-Shaped O-Ring Monopole Antenna for Modern Broadband Wireless Applications
Author(s) -
Chenhan Wu,
I-Fong Chen,
ChiaMei Peng,
Wen-Yi Tsai,
JwoShiun Sun
Publication year - 2021
Publication title -
wseas transactions on electronics/wseas transactions on electronics
Language(s) - English
Resource type - Journals
eISSN - 2415-1513
pISSN - 1109-9445
DOI - 10.37394/232017.2021.12.13
Subject(s) - fractal antenna , sierpinski triangle , monopole antenna , fractal , sierpinski carpet , physics , antenna (radio) , standing wave ratio , radiation pattern , geometry , optics , acoustics , telecommunications , mathematics , computer science , mathematical analysis , microstrip antenna , antenna efficiency
In this letter, the design of a compact planar Fractal-shaped O-ring monopole antenna based on the Sierpinski carpet concept is studied and proposed for modern broadband wireless applications. The planar fractal-shaped O-ring monopole antenna is on the basis of Sierpinski category construction and then modifies the state of the plane inward with a radius of 27mm over the two iterations. The antenna structure is low profile and easy to be fabricated, and it has performed the simulation and measurement with the result VSWR ≤ 2 that can achieve a wide impedance bandwidth 636% from the frequency band 1.57GHz ~ 10GHz. The geometric scale factor of the Sierpinski fractal is according to the same scale element that defines the geometrical self-similarity. In our experiments, the results show that use of fractal-shaped O-ring into monopole antenna structure can effectively improve input impedance matching, and obtain a larger bandwidth and better radiation pattern, while also having predictable multi-band characteristics.