IEICE Electronics Express
Online ISSN : 1349-2543
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A miniaturized broadband quasi-Yagi antenna for X- to Ku-band applications
Dong Sik WooKang Wook Kim
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JOURNALS FREE ACCESS

2013 Volume 10 Issue 3 Pages 20120828

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Abstract

A miniaturized, broadband quasi-Yagi antenna utilizing a modified ultra-wideband microstrip-to-coplanar stripline (MS-to-CPS) balun is proposed. Excellent broadband phase and amplitude balance is possible due to the ultra-wideband MS-to-CPS balun based on field and impedance matching concept. The implemented antenna provides very wide bandwidth from 7 to 15.1GHz (73.3%). The gain of the antenna is from 3.7 to 5.5dBi, the front-to-back ratio is more than 10dB, and the nominal radiation efficiency is about 94%.

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© 2013 by The Institute of Electronics, Information and Communication Engineers
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