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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2011-02-25
A Broadband PIFA with Zeroth-Order Resonator Loading
By
Hong-Ze Yu,

    Dr. Hong-Ze Yu

    School of Electronic and Information Engineering

    South China University of Technology

    China

    Homepage

Qing-Xin Chu

    Prof. Qing-Xin Chu

    School of Electronic and Information Engineering

    South China University of Technology

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 21, 67-77, 2011
doi:10.2528/PIERL11010708 | Google Scholar

Abstract
A printed broadband planar inverted-F antenna (PIFA) with zeroth-order resonator (ZOR) loaded is proposed whose shorting strip of the PIFA is replaced by an inter-digital capacitor and thin inductive strip in series. The loaded inter-digital capacitor and thin inductive strip act as a shorting strip at the 3.1 GHz, which allows the antenna to maintain its regular performance. Around 2.0 GHz, the antenna with the inter-digital capacitor and thin inductive strip works on the zeroth-order resonance mode, which makes the physical size be independent of the wavelength. By merging the two modes, a broadband performance can be achieved. The size of the antenna is only 12.5 mm×7.81 mm×1.6 mm with single layer. The measured antenna bandwidth is 1.63 GHz (about 65%), total gain is above 2.5 dBi and the simulated radiation efficiency is over 90% in the working band. Especially the antenna has same direction of the radiation patterns in the broadband. In the end, the antenna with lumped elements loading is also discussed.
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Citation
Hong-Ze Yu, and Qing-Xin Chu, "A Broadband PIFA with Zeroth-Order Resonator Loading," PIER Letters, Vol. 21, 67-77, 2011.
doi:10.2528/PIERL11010708
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