Design of a Wideband CPW Fed Fractal Antenna for Satellite Communication
-
Published:2023-02-10
Issue:
Volume:
Page:
-
ISSN:1943-5711
-
Container-title:The Applied Computational Electromagnetics Society Journal (ACES)
-
language:
-
Short-container-title:ACES Journal
Author:
Nanthagopal Varnikha,Paramasivam Jothilakshmi
Abstract
A novel ‘T’ square wideband fractal antenna is proposed for satellite communication. The Wideband is achieved through the ‘T’ square fractal design and CPW feed. At first, a conventional square-shaped patch antenna is designed. Then the square-shaped patch is replaced by a Type-I fractal to achieve wideband. Finally, a Type-II fractal with an L-Shaped boundary is used to enhance the bandwidth to a greater extent. The gain of the proposed antenna ranges from 4 dB to 6.3 dB for the entire frequency range of 6.2 GHz to 14 GHz. The radiation efficiency of the antenna is noticed up to 84%. The fractal antenna resonates well throughout the entire frequency range with a VSWR of less than 2. The antenna having such a wide band characteristic can be found suitable for a wide range of applications like earth exploration satellites, fixed satellites, radiolocation, maritime radio navigation, and aeronautical radio navigation. A metal reflector is also introduced at the bottom of the antenna to produce a unidirectional radiation pattern. This increases the gain up to 9.8 dBi and a front-to-back ratio is noticed above 20 dB. The design is fabricated and the measurement results are found to be in good agreement with the simulation results.
Publisher
River Publishers
Subject
Electrical and Electronic Engineering,Astronomy and Astrophysics