Full-wave analysis of choking charactertistics of sleeve balun on coaxial cables

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Title Full-wave analysis of choking charactertistics of sleeve balun on coaxial cables
Author Saario, Seppo; Lu, Junwei; Thiel, David Victor
Journal Name Electronics Letters
Editor Alf Roberts
Year Published 2002
Place of publication United Kingdon
Publisher Institution of Electrical Engineers
Abstract An optimal design for a sleeve balun with maximum choking on a coaxial cable is determined using a full-wave body of revolution finite difference time domain method with perfectly matched layer boundary conditions. An analysis of the sensitivity of choke length L and outer diameter R2 on choking effectiveness was carried out. A balun with L=77.5 mm (0.232λ0) and R2=8 mm on a cable with R1=2 mm (R2/R1=4) results in an S21 of -20 dB at 900 MHz and -15.5 dB at 2730 MHz. The isolation of the balun at 900 MHz is quickly degraded as the R2 /R1 ratio is reduced below 2. Increasing R2/R1 to 8, results in a reduction of optimum balun length L to approximately 0.215λ0, approximately 14% shorter than the typical recommended length for an 'ideal' quarter-wave balun
Peer Reviewed Yes
Published Yes
Publisher URI http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=2220
Alternative URI http://dx.doi.org/10.1049/el:20020227
Copyright Statement Copyright 2002 Institution of Engineering and Technology. Reproduced in accordance with the copyright policy of the publisher. This journal is available online - use hypertext links.
Volume 38
Issue Number 7
Page from 304
Page to 305
ISSN 0013-5194
Date Accessioned 2003-02-28
Language en_AU
Research Centre Queensland Micro and Nanotechnology Centre
Faculty Faculty of Engineering and Information Technology
Subject PRE2009-Other Electronic Engineering
URI http://hdl.handle.net/10072/6671
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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