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This paper presents a dual-band (2.4 GHz, 5.2/5.8 GHz) WLAN antenna for laptop applications. The proposed antenna consists of the folded-dipole structure operated at higher band and two arms operated at lower band. The radiation pattern of a proposed antenna is orthogonal to that of a conventional monopole at all operating frequency bands.
A crab shaped tag antenna which has a better performance than conventional label type of tag antenna is proposed for UHF band RFID systems. The proposed antenna is a dipole with T-matching network, and parasitic loop is inserted to the T-matching network. The antenna is analyzed by simulator, Ansoft HFSS software, and the measured results based on backscattering method are presented.
UHF band RFID tag antenna which has a similar radiation pattern of the electrically small loop antenna is presented. The structure of the proposed tag antenna is a small circular dipole array on the xy-plane, and the antenna is fed by inductively coupled loop to flow a uniform amplitude and in phased current along its circumference. Since its radiation pattern has an omnidirectional pattern in the...
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