Open AccessCPW‐fed octagonal super‐wideband fractal antenna with defected ground structure
Author(s) -
Singhal Sarthak,
Singh Amit Kumar
Publication year - 2017
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2016.0110
Subject(s) - ground plane , wideband , coplanar waveguide , optics , radiation pattern , fractal antenna , omnidirectional antenna , fractal , bandwidth (computing) , radiation , microstrip antenna , electrical impedance , materials science , antenna (radio) , physics , optoelectronics , acoustics , antenna efficiency , engineering , electrical engineering , telecommunications , mathematics , mathematical analysis , microwave
A coplanar waveguide (CPW)‐fed octagonal super‐wideband fractal antenna is presented. It comprises four iterations of an octagonal slot‐loaded octagonal radiating patch, CPW feedline, and modified ground plane loaded with a pair of rectangular notches. An impedance bandwidth of 3.8–68GHz (179%) – i.e. a17.89:1 ratio bandwidth – is achieved. Desirable radiation performance characteristics, including relatively stable and omnidirectional radiation patterns, are obtained over this range. The experimental and simulation results are found to be in good agreement. The designed antenna has the advantages of wider bandwidth and miniaturised size over the previously reported structures.