NDLI: Radiation characteristics of circular waveguide antenna loaded with ferrite rod

Content Provider	IET Digital Library
Author	Sheikh, Sharif Iqbal Mitu Algarni, A. M. Ragheb, Hassan
Abstract	High power waveguide antennas are widely used for military and commercial application. In this study, a magnetised ferrite rod loaded circular waveguide antenna (CWA) is presented, where the main beam is steered by varying the external magnetising field (H 0). To predict the limitations of this multimode antenna, the modes supported by the structure and the lossy ferrimagnetic resonance region needs to be calculated. An analytical technique, based on boundary values, is used to derive six characteristic equations for the partially ferrite loaded CWA. The non-trivial solution of the equations is used to plot the mode chart and identify the low-loss operating region. Using HFSS simulator, the coaxially excited ferrite loaded CWA is optimised to demonstrate a beam scan up to ±30° for H 0 = ±142 KA/m. Experimental results are used to verify the simulated scan characteristics of the antenna.
Starting Page	797
Ending Page	801
Page Count	5
ISSN	17518725
Volume Number	10
e-ISSN	17518733
Issue Number	Issue 7, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/10/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2015.0569
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2016-05-15
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Antenna Radiation Pattern Beam Steering Circular Waveguide Circular Waveguide Antenna Ferrimagnetic Resonance Ferrite Rod Ferrite Waveguide Ferrite-loaded Waveguide HFSS Simulator High Power Waveguide Antenna Lossy Ferrimagnetic Resonance Region Magnetisation Magnetised Ferrite Rod Microwave Magnetic Device Military Application Multimode Antenna Partial Ferrite Loaded CWA Radiation Characteristic Single Antenna Waveguide And Microwave Transmission Line Waveguide Antenna
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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