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http://dx.doi.org/10.12673/jant.2011.15.2.197

Triple-band printed antenna based upon switching properties  

Lee, Young-Soon (School of Electronic Engineering, Kumoh National Institute of Technology)
Yoo, Jin-Ha (Department of Radio Communication Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.2, 2011 , pp. 197-203 More about this Journal
Abstract
A triple-band antenna which can be used at GSM900, PCS1900 and Bluetooth(or Wi-Fi) frequency band is proposed. The proposed antenna is designed based upon switching between IFA(Inverted F Antenna) that has a resonant length of ${\lambda}/4$ and loop antenna that has a resonant length of ${\lambda}/2$. It can be applied to triple-band only by use of single printed pattern due to the switching characteristic. It is designed by use of the IFA for the application to the GSM900, while it is designed by use of the loop antenna for the application to the PCS1900 and by use of additional pattern of IFA for the application to the Bluetooth(or Wi-Fi) respectively. As a result, it has been observed that the proposed antenna satisfies the required return loss(${\leq}10dB$) and also has efficiency(${\geq}80%$) over the whole band. Moreover the proposed antenna has omni-directional radiation pattern which is suitable to apply to the mobile phone.
Keywords
Inverted-F Antenna; Mobile phone; Multi-band; GSM900; PCS1900;
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