An axial ratio beamwidth enhancement of S-band satellite antenna with parasitic elements

An axial ratio beamwidth enhancement of S-band satellite antenna with parasitic elements

In this article, a structural modification of S-band turnstile antenna to enhance the axial ratio beamwidth by attaching parasitic elements is suggested and investigated. Through the parametric studies and optimization, the positions, shapes and values of the final optimized elements have been obtai...

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Bibliographic Details
Published in:2013 Asia-Pacific Microwave Conference Proceedings (APMC) pp. 1145 - 1147
Main Authors: Eun-Cheol Choi, Lee, Jae W., Taek-Kyung Lee
Format: Conference Proceeding
Language:English
Published: IEEE 01-11-2013
Subjects:
Antenna radiation patterns
Circular Polarization
Dipole antennas
Parametric study
Parasitic Element
Power dividers
Resonant frequency
Satellite antennas
TT&C(Telemetry Tracking and Command)
Turnstile Antenna
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Description
Summary:In this article, a structural modification of S-band turnstile antenna to enhance the axial ratio beamwidth by attaching parasitic elements is suggested and investigated. Through the parametric studies and optimization, the positions, shapes and values of the final optimized elements have been obtained with two crossed Bow-tie dipole antennas. The overall structure is composed of main radiator and feeding part using Wilkinson power divider with two stubs for generating phase difference. The electrical performances have been verified in terms of the return loss, radiation pattern, and axial ratio beamwidth by using commercially available full EM simulator.
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2013.6695050