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A Characteristics of Dual-Band PIFA for Mobile Phones Using H-Types Slits in the Radiators  

Lee Young-Hun (School of Electronic Engineering, Kumoh National Insitute of Technology)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.1, 2005 , pp. 84-91 More about this Journal
Abstract
In this papers, we study the characteristics of dual band PIFA(Planar Inverted F antenna) for handy phones using H-type silt in the antenna radiators. Slit types on the antenna radiator vary resonance mechanism of the antenna and affect reactance component of impedance for the antenna. Therefore the antennas resonate at the dual band(cellular -band, Korea-PCS band), the bandwidth, input impedance and radiation patterns of the proposed antenna is affected by the silt length on the radiators. In order to demonstrate the validity of the proposed theory, it is implementation the antenna of the 4 types. From results for the experiment of the implementation antenna, -5 dB bandwidth of return loss is content with the allocated bandwidth of Cellular and Korea-PCS system the gains of the antenna is about -8$\~$ - 1 dB, the radiation patterns for x-polarized or y-polarized are omnidirectional pattern. From above the results of this papers, it is conclude mobile phones antenna for handy phones using this papers results.
Keywords
Dual Band PIFA Antenna; Mobile Phone Antenna; H-Type Slits; Ommnidirectional Radiation Pattern; Cellular Band; K-PCS Band;
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10 http://www.lgchem.co.kr/upload/product/lg_foamex[1].pdf