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Compact resonant antenna based on composite right/left‐handed transmission line with a magneto‐dielectric material
Author(s) -
Duk Jang Kyung,
Hee Kim Jae,
Hyun Lee Dong,
Park Wee Sang
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24490
Subject(s) - ground plane , microwave , patch antenna , dielectric , microstrip antenna , optics , radiation pattern , transmission line , antenna (radio) , physics , optoelectronics , electrical engineering , engineering , materials science , telecommunications
We present a method of reducing the size of antennas that is based on composite right/left‐handed (CRLH) transmission lines (TL) which use a magneto‐dielectric material (MDM). The CRLH‐TL antenna consists of two mushroom structures, each composed of a metal patch connected to the ground plane by a via. To achieve high permeability in the antenna, an MDM is constructed by integrating split ring resonators into ordinary dielectric material. Antennas with and without MDM were fabricated and measured. Inserting the MDM decreased the antenna's resonant frequencies by 10.8% at the −1st order mode and by 11.3% at the zeroth‐order mode. At the zeroth‐order mode, the antenna resonated at 1.88 GHz with a bandwidth of 0.48% and had a monopolar radiation pattern, with gain of 0.534 dBi and efficiency of 51.7%. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1994–1997, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24490