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A broadband planar antenna is developed for DVB-H and GSM-900 handset applications. The planar antenna is based on composite right- and left-hand (CRLH) structures, of which the resonant frequencies are determined by the four CRLH parameters. It has been demonstrated by simulation and experiment that the proposed antenna can achieve a bandwidth of about 70%, covering the DVB-H band for return loss%5%dB and the GSM-900 band for return loss%7.5%dB. The antenna gain, efficiency, and radiation pattern are suitable for DVB-H and GSM-900 mobile terminals.