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A multiband inverted-F antenna that operates over WiBro, WLAN, WiMax and S-DMB frequency bands is proposed. The antenna consists of an inverted-F element and four stubs. The measured return loss of the designed antenna over the frequency band of interest is better than 10 dB. Good return loss and radiation pattern characteristics have been obtained in the desired frequency band.
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Yu et al. (2009) studied this question.
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